/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/safe003_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:29:32,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:29:32,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:29:32,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:29:32,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:29:32,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:29:32,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:29:32,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:29:32,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:29:32,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:29:32,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:29:32,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:29:32,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:29:32,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:29:32,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:29:32,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:29:32,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:29:32,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:29:32,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:29:32,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:29:32,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:29:32,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:29:32,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:29:32,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:29:32,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:29:32,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:29:32,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:29:32,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:29:32,720 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 23:29:32,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:29:32,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:29:32,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:29:32,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:29:32,755 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:29:32,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:29:32,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:29:32,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:29:32,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:29:32,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:29:32,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:29:32,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:29:32,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:29:32,759 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:29:32,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:29:32,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:29:32,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:29:32,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:29:32,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:29:32,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:29:32,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:29:32,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:29:32,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:29:32,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:29:32,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:29:32,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:29:32,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:29:32,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:29:32,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:29:32,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:29:32,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:29:33,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:29:33,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:29:33,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:29:33,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:29:33,249 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:29:33,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2021-04-28 23:29:33,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b869567b/46b8fc722c3d4243880b5c00a61ac86f/FLAGb17bb745a [2021-04-28 23:29:34,197 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:29:34,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2021-04-28 23:29:34,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b869567b/46b8fc722c3d4243880b5c00a61ac86f/FLAGb17bb745a [2021-04-28 23:29:34,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b869567b/46b8fc722c3d4243880b5c00a61ac86f [2021-04-28 23:29:34,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:29:34,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:29:34,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:29:34,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:29:34,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:29:34,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:29:34" (1/1) ... [2021-04-28 23:29:34,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f338ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:34, skipping insertion in model container [2021-04-28 23:29:34,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:29:34" (1/1) ... [2021-04-28 23:29:34,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:29:34,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:29:34,765 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/safe003_tso.oepc.i[950,963] [2021-04-28 23:29:35,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:29:35,112 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:29:35,132 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/safe003_tso.oepc.i[950,963] [2021-04-28 23:29:35,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:29:35,313 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:29:35,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35 WrapperNode [2021-04-28 23:29:35,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:29:35,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:29:35,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:29:35,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:29:35,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:29:35,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:29:35,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:29:35,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:29:35,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (1/1) ... [2021-04-28 23:29:35,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:29:35,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:29:35,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:29:35,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:29:35,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (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 23:29:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:29:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:29:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:29:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:29:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:29:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:29:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:29:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:29:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:29:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:29:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:29:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:29:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:29:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:29:35,594 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 23:29:36,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:29:36,157 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:29:36,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:29:36 BoogieIcfgContainer [2021-04-28 23:29:36,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:29:36,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:29:36,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:29:36,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:29:36,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:29:34" (1/3) ... [2021-04-28 23:29:36,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:29:36, skipping insertion in model container [2021-04-28 23:29:36,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:29:35" (2/3) ... [2021-04-28 23:29:36,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:29:36, skipping insertion in model container [2021-04-28 23:29:36,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:29:36" (3/3) ... [2021-04-28 23:29:36,170 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2021-04-28 23:29:36,177 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:29:36,183 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:29:36,184 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:29:36,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,230 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:29:36,240 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:29:36,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 23:29:36,296 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:29:36,297 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:29:36,297 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:29:36,297 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:29:36,297 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:29:36,297 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:29:36,297 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:29:36,298 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:29:36,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:29:36,363 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-04-28 23:29:36,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:29:36,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-28 23:29:36,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:29:36,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-04-28 23:29:36,383 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:36,402 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:29:36,407 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:29:36,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-04-28 23:29:36,431 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-04-28 23:29:36,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:29:36,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-28 23:29:36,441 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-28 23:29:40,299 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:29:40,480 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:29:40,639 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:29:40,953 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:29:41,144 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:29:41,334 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:29:41,538 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:29:41,731 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:29:41,901 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:29:42,354 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:29:42,523 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:29:43,488 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:29:43,787 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:29:44,086 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:29:44,438 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:29:44,541 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:29:45,149 INFO L158 LiptonReduction]: Checked pairs total: 5648 [2021-04-28 23:29:45,149 INFO L160 LiptonReduction]: Total number of compositions: 84 [2021-04-28 23:29:45,153 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8772 [2021-04-28 23:29:45,178 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-04-28 23:29:45,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:29:45,178 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:29:45,179 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:29:45,180 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:29:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:29:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash 351986949, now seen corresponding path program 1 times [2021-04-28 23:29:45,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:29:45,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102289633] [2021-04-28 23:29:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:29:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:29:45,478 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:29:45,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:29:45,510 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 23:29:45,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102289633] [2021-04-28 23:29:45,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:29:45,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:29:45,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580386354] [2021-04-28 23:29:45,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:29:45,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:29:45,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:29:45,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:29:45,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:29:45,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 23:29:45,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:29:45,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:29:45,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:29:45,778 INFO L129 PetriNetUnfolder]: 256/734 cut-off events. [2021-04-28 23:29:45,778 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:29:45,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 734 events. 256/734 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 5883 event pairs, 72 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 1155. Up to 256 conditions per place. [2021-04-28 23:29:45,786 INFO L132 encePairwiseOnDemand]: 141/159 looper letters, 6 selfloop transitions, 6 changer transitions 30/74 dead transitions. [2021-04-28 23:29:45,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 219 flow [2021-04-28 23:29:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:29:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:29:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2021-04-28 23:29:45,803 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2021-04-28 23:29:45,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2021-04-28 23:29:45,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2021-04-28 23:29:45,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:29:45,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2021-04-28 23:29:45,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 23:29:45,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 23:29:45,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 23:29:45,825 INFO L185 Difference]: Start difference. First operand has 75 places, 65 transitions, 139 flow. Second operand 3 states and 351 transitions. [2021-04-28 23:29:45,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 219 flow [2021-04-28 23:29:45,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 23:29:45,833 INFO L241 Difference]: Finished difference. Result has 76 places, 44 transitions, 130 flow [2021-04-28 23:29:45,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=76, PETRI_TRANSITIONS=44} [2021-04-28 23:29:45,838 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2021-04-28 23:29:45,839 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:45,839 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 44 transitions, 130 flow [2021-04-28 23:29:45,842 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 44 transitions, 130 flow [2021-04-28 23:29:45,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 130 flow [2021-04-28 23:29:45,869 INFO L129 PetriNetUnfolder]: 46/224 cut-off events. [2021-04-28 23:29:45,870 INFO L130 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2021-04-28 23:29:45,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 224 events. 46/224 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1447 event pairs, 16 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 370. Up to 53 conditions per place. [2021-04-28 23:29:45,880 INFO L146 LiptonReduction]: Number of co-enabled transitions 990 [2021-04-28 23:29:45,895 INFO L158 LiptonReduction]: Checked pairs total: 233 [2021-04-28 23:29:45,896 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:29:45,896 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-04-28 23:29:45,900 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 130 flow [2021-04-28 23:29:45,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 23:29:45,901 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:29:45,902 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:29:45,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:29:45,902 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:29:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:29:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash 268622995, now seen corresponding path program 1 times [2021-04-28 23:29:45,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:29:45,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145384449] [2021-04-28 23:29:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:29:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:29:46,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,024 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:29:46,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:29:46,043 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 23:29:46,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145384449] [2021-04-28 23:29:46,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:29:46,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:29:46,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888565560] [2021-04-28 23:29:46,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:29:46,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:29:46,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:29:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:29:46,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:29:46,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 23:29:46,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:29:46,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:29:46,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:29:46,094 INFO L129 PetriNetUnfolder]: 23/138 cut-off events. [2021-04-28 23:29:46,094 INFO L130 PetriNetUnfolder]: For 32/85 co-relation queries the response was YES. [2021-04-28 23:29:46,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 138 events. 23/138 cut-off events. For 32/85 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 721 event pairs, 2 based on Foata normal form. 5/91 useless extension candidates. Maximal degree in co-relation 280. Up to 30 conditions per place. [2021-04-28 23:29:46,096 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 10 selfloop transitions, 6 changer transitions 5/50 dead transitions. [2021-04-28 23:29:46,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 196 flow [2021-04-28 23:29:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:29:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:29:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2021-04-28 23:29:46,101 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6886792452830188 [2021-04-28 23:29:46,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 438 transitions. [2021-04-28 23:29:46,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 438 transitions. [2021-04-28 23:29:46,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:29:46,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 438 transitions. [2021-04-28 23:29:46,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 23:29:46,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 23:29:46,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 23:29:46,108 INFO L185 Difference]: Start difference. First operand has 50 places, 44 transitions, 130 flow. Second operand 4 states and 438 transitions. [2021-04-28 23:29:46,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 196 flow [2021-04-28 23:29:46,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:29:46,112 INFO L241 Difference]: Finished difference. Result has 54 places, 44 transitions, 156 flow [2021-04-28 23:29:46,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2021-04-28 23:29:46,113 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2021-04-28 23:29:46,113 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:46,113 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 44 transitions, 156 flow [2021-04-28 23:29:46,114 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 44 transitions, 156 flow [2021-04-28 23:29:46,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 44 transitions, 156 flow [2021-04-28 23:29:46,130 INFO L129 PetriNetUnfolder]: 23/139 cut-off events. [2021-04-28 23:29:46,130 INFO L130 PetriNetUnfolder]: For 37/38 co-relation queries the response was YES. [2021-04-28 23:29:46,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 139 events. 23/139 cut-off events. For 37/38 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 750 event pairs, 4 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 252. Up to 30 conditions per place. [2021-04-28 23:29:46,134 INFO L146 LiptonReduction]: Number of co-enabled transitions 980 [2021-04-28 23:29:46,147 INFO L158 LiptonReduction]: Checked pairs total: 229 [2021-04-28 23:29:46,147 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:29:46,147 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-04-28 23:29:46,149 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 156 flow [2021-04-28 23:29:46,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 23:29:46,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:29:46,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:29:46,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:29:46,150 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:29:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:29:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1998283868, now seen corresponding path program 1 times [2021-04-28 23:29:46,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:29:46,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379151755] [2021-04-28 23:29:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:29:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:29:46,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,266 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:29:46,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:29:46,284 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 23:29:46,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379151755] [2021-04-28 23:29:46,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:29:46,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:29:46,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031978345] [2021-04-28 23:29:46,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:29:46,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:29:46,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:29:46,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:29:46,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:29:46,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 23:29:46,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:29:46,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:29:46,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:29:46,345 INFO L129 PetriNetUnfolder]: 18/138 cut-off events. [2021-04-28 23:29:46,345 INFO L130 PetriNetUnfolder]: For 52/75 co-relation queries the response was YES. [2021-04-28 23:29:46,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 138 events. 18/138 cut-off events. For 52/75 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 778 event pairs, 0 based on Foata normal form. 6/92 useless extension candidates. Maximal degree in co-relation 296. Up to 30 conditions per place. [2021-04-28 23:29:46,347 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 6 selfloop transitions, 9 changer transitions 14/58 dead transitions. [2021-04-28 23:29:46,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 304 flow [2021-04-28 23:29:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:29:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:29:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2021-04-28 23:29:46,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6893081761006289 [2021-04-28 23:29:46,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2021-04-28 23:29:46,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2021-04-28 23:29:46,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:29:46,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2021-04-28 23:29:46,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 23:29:46,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 23:29:46,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 23:29:46,358 INFO L185 Difference]: Start difference. First operand has 51 places, 44 transitions, 156 flow. Second operand 5 states and 548 transitions. [2021-04-28 23:29:46,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 304 flow [2021-04-28 23:29:46,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:29:46,362 INFO L241 Difference]: Finished difference. Result has 56 places, 42 transitions, 176 flow [2021-04-28 23:29:46,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2021-04-28 23:29:46,363 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2021-04-28 23:29:46,363 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:46,363 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 42 transitions, 176 flow [2021-04-28 23:29:46,364 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 42 transitions, 176 flow [2021-04-28 23:29:46,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 42 transitions, 176 flow [2021-04-28 23:29:46,375 INFO L129 PetriNetUnfolder]: 4/80 cut-off events. [2021-04-28 23:29:46,375 INFO L130 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2021-04-28 23:29:46,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 80 events. 4/80 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 367 event pairs, 2 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 159. Up to 14 conditions per place. [2021-04-28 23:29:46,378 INFO L146 LiptonReduction]: Number of co-enabled transitions 844 [2021-04-28 23:29:46,395 INFO L158 LiptonReduction]: Checked pairs total: 203 [2021-04-28 23:29:46,395 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:29:46,395 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-28 23:29:46,397 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 176 flow [2021-04-28 23:29:46,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 23:29:46,398 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:29:46,398 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:29:46,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:29:46,398 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:29:46,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:29:46,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1592110897, now seen corresponding path program 1 times [2021-04-28 23:29:46,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:29:46,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149680334] [2021-04-28 23:29:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:29:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:29:46,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,453 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:29:46,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:29:46,470 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 23:29:46,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149680334] [2021-04-28 23:29:46,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:29:46,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:29:46,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293844210] [2021-04-28 23:29:46,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:29:46,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:29:46,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:29:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:29:46,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:29:46,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 23:29:46,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:29:46,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:29:46,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:29:46,532 INFO L129 PetriNetUnfolder]: 1/101 cut-off events. [2021-04-28 23:29:46,532 INFO L130 PetriNetUnfolder]: For 78/92 co-relation queries the response was YES. [2021-04-28 23:29:46,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 101 events. 1/101 cut-off events. For 78/92 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 552 event pairs, 0 based on Foata normal form. 3/61 useless extension candidates. Maximal degree in co-relation 230. Up to 17 conditions per place. [2021-04-28 23:29:46,533 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 3 selfloop transitions, 8 changer transitions 23/50 dead transitions. [2021-04-28 23:29:46,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 50 transitions, 282 flow [2021-04-28 23:29:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:29:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:29:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-04-28 23:29:46,536 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6880503144654088 [2021-04-28 23:29:46,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-04-28 23:29:46,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-04-28 23:29:46,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:29:46,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-04-28 23:29:46,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 23:29:46,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 23:29:46,543 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 23:29:46,543 INFO L185 Difference]: Start difference. First operand has 56 places, 42 transitions, 176 flow. Second operand 5 states and 547 transitions. [2021-04-28 23:29:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 50 transitions, 282 flow [2021-04-28 23:29:46,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 241 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-04-28 23:29:46,547 INFO L241 Difference]: Finished difference. Result has 57 places, 27 transitions, 137 flow [2021-04-28 23:29:46,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=27} [2021-04-28 23:29:46,548 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -18 predicate places. [2021-04-28 23:29:46,548 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:46,548 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 27 transitions, 137 flow [2021-04-28 23:29:46,549 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 27 transitions, 137 flow [2021-04-28 23:29:46,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 27 transitions, 137 flow [2021-04-28 23:29:46,554 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2021-04-28 23:29:46,555 INFO L130 PetriNetUnfolder]: For 42/51 co-relation queries the response was YES. [2021-04-28 23:29:46,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 43 events. 0/43 cut-off events. For 42/51 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-04-28 23:29:46,556 INFO L146 LiptonReduction]: Number of co-enabled transitions 252 [2021-04-28 23:29:46,625 INFO L158 LiptonReduction]: Checked pairs total: 115 [2021-04-28 23:29:46,625 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:29:46,625 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-04-28 23:29:46,627 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 137 flow [2021-04-28 23:29:46,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 23:29:46,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:29:46,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:29:46,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:29:46,628 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:29:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:29:46,629 INFO L82 PathProgramCache]: Analyzing trace with hash 993826381, now seen corresponding path program 2 times [2021-04-28 23:29:46,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:29:46,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817389285] [2021-04-28 23:29:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:29:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:29:46,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:29:46,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,675 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 23:29:46,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817389285] [2021-04-28 23:29:46,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:29:46,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:29:46,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434488235] [2021-04-28 23:29:46,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:29:46,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:29:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:29:46,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:29:46,678 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 159 [2021-04-28 23:29:46,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 23:29:46,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:29:46,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 159 [2021-04-28 23:29:46,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:29:46,706 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-04-28 23:29:46,706 INFO L130 PetriNetUnfolder]: For 51/68 co-relation queries the response was YES. [2021-04-28 23:29:46,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 38 events. 0/38 cut-off events. For 51/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 0 based on Foata normal form. 3/29 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-28 23:29:46,706 INFO L132 encePairwiseOnDemand]: 155/159 looper letters, 5 selfloop transitions, 1 changer transitions 5/28 dead transitions. [2021-04-28 23:29:46,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 165 flow [2021-04-28 23:29:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:29:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:29:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2021-04-28 23:29:46,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7295597484276729 [2021-04-28 23:29:46,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2021-04-28 23:29:46,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2021-04-28 23:29:46,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:29:46,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2021-04-28 23:29:46,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 23:29:46,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 23:29:46,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 23:29:46,716 INFO L185 Difference]: Start difference. First operand has 44 places, 27 transitions, 137 flow. Second operand 5 states and 580 transitions. [2021-04-28 23:29:46,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 165 flow [2021-04-28 23:29:46,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 139 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-04-28 23:29:46,718 INFO L241 Difference]: Finished difference. Result has 44 places, 23 transitions, 88 flow [2021-04-28 23:29:46,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2021-04-28 23:29:46,719 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -31 predicate places. [2021-04-28 23:29:46,719 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:46,719 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 23 transitions, 88 flow [2021-04-28 23:29:46,719 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 23 transitions, 88 flow [2021-04-28 23:29:46,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 23 transitions, 88 flow [2021-04-28 23:29:46,724 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-04-28 23:29:46,724 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-04-28 23:29:46,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 23 events. 0/23 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-28 23:29:46,725 INFO L146 LiptonReduction]: Number of co-enabled transitions 160 [2021-04-28 23:29:46,817 INFO L158 LiptonReduction]: Checked pairs total: 54 [2021-04-28 23:29:46,817 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-28 23:29:46,817 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 98 [2021-04-28 23:29:46,819 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 88 flow [2021-04-28 23:29:46,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 23:29:46,820 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:29:46,820 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:29:46,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:29:46,820 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:29:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:29:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash 121532347, now seen corresponding path program 1 times [2021-04-28 23:29:46,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:29:46,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335232865] [2021-04-28 23:29:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:29:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:29:46,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:29:46,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:29:46,869 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:29:46,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:29:46,882 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 23:29:46,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335232865] [2021-04-28 23:29:46,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:29:46,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:29:46,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744248708] [2021-04-28 23:29:46,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:29:46,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:29:46,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:29:46,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:29:46,886 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 162 [2021-04-28 23:29:46,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 23:29:46,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:29:46,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 162 [2021-04-28 23:29:46,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:29:46,908 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-04-28 23:29:46,909 INFO L130 PetriNetUnfolder]: For 42/46 co-relation queries the response was YES. [2021-04-28 23:29:46,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 22 events. 0/22 cut-off events. For 42/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 37 event pairs, 0 based on Foata normal form. 5/20 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-04-28 23:29:46,909 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-04-28 23:29:46,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 22 transitions, 100 flow [2021-04-28 23:29:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:29:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:29:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2021-04-28 23:29:46,912 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2021-04-28 23:29:46,912 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2021-04-28 23:29:46,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2021-04-28 23:29:46,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:29:46,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2021-04-28 23:29:46,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:29:46,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:29:46,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:29:46,917 INFO L185 Difference]: Start difference. First operand has 42 places, 23 transitions, 88 flow. Second operand 4 states and 428 transitions. [2021-04-28 23:29:46,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 22 transitions, 100 flow [2021-04-28 23:29:46,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 73 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-04-28 23:29:46,918 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-04-28 23:29:46,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-04-28 23:29:46,919 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -40 predicate places. [2021-04-28 23:29:46,919 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:29:46,919 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 0 transitions, 0 flow [2021-04-28 23:29:46,920 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 0 transitions, 0 flow [2021-04-28 23:29:46,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 23:29:46,920 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 23:29:46,920 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:29:46,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-28 23:29:46,921 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 23:29:46,921 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:29:46,921 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:29:46,921 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-28 23:29:46,923 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 23:29:46,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 23:29:46,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:29:46,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:29:46 BasicIcfg [2021-04-28 23:29:46,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 23:29:46,930 INFO L168 Benchmark]: Toolchain (without parser) took 12494.07 ms. Allocated memory was 302.0 MB in the beginning and 463.5 MB in the end (delta: 161.5 MB). Free memory was 276.1 MB in the beginning and 389.7 MB in the end (delta: -113.6 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.0 GB. [2021-04-28 23:29:46,930 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:29:46,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.35 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.3 MB in the end (delta: 585.5 kB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. [2021-04-28 23:29:46,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.89 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 270.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:29:46,932 INFO L168 Benchmark]: Boogie Preprocessor took 49.36 ms. Allocated memory is still 302.0 MB. Free memory was 270.2 MB in the beginning and 269.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:29:46,932 INFO L168 Benchmark]: RCFGBuilder took 701.02 ms. Allocated memory is still 302.0 MB. Free memory was 269.1 MB in the beginning and 246.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:29:46,933 INFO L168 Benchmark]: TraceAbstraction took 10766.91 ms. Allocated memory was 302.0 MB in the beginning and 463.5 MB in the end (delta: 161.5 MB). Free memory was 246.1 MB in the beginning and 389.7 MB in the end (delta: -143.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-28 23:29:46,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 823.35 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.3 MB in the end (delta: 585.5 kB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 90.89 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 270.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 49.36 ms. Allocated memory is still 302.0 MB. Free memory was 270.2 MB in the beginning and 269.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 701.02 ms. Allocated memory is still 302.0 MB. Free memory was 269.1 MB in the beginning and 246.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10766.91 ms. Allocated memory was 302.0 MB in the beginning and 463.5 MB in the end (delta: 161.5 MB). Free memory was 246.1 MB in the beginning and 389.7 MB in the end (delta: -143.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8742.6ms, 69 PlacesBefore, 75 PlacesAfterwards, 60 TransitionsBefore, 65 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 5648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1619, positive: 1453, positive conditional: 1453, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 859, positive: 808, positive conditional: 0, positive unconditional: 808, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 859, positive: 808, positive conditional: 0, positive unconditional: 808, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 859, positive: 794, positive conditional: 0, positive unconditional: 794, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 65, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 367, positive: 81, positive conditional: 0, positive unconditional: 81, negative: 285, negative conditional: 0, negative unconditional: 285, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1619, positive: 645, positive conditional: 645, positive unconditional: 0, negative: 115, negative conditional: 115, negative unconditional: 0, unknown: 859, unknown conditional: 859, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 838, Positive cache size: 787, Positive conditional cache size: 787, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.2ms, 76 PlacesBefore, 50 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 990 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 849, Positive cache size: 797, Positive conditional cache size: 797, Positive unconditional cache size: 0, Negative cache size: 52, Negative conditional cache size: 52, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.7ms, 54 PlacesBefore, 51 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 980 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 229 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 853, Positive cache size: 800, Positive conditional cache size: 800, Positive unconditional cache size: 0, Negative cache size: 53, Negative conditional cache size: 53, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.1ms, 56 PlacesBefore, 56 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 844 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 203 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 859, Positive cache size: 805, Positive conditional cache size: 805, Positive unconditional cache size: 0, Negative cache size: 54, Negative conditional cache size: 54, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 76.6ms, 57 PlacesBefore, 44 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 115 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 85, positive: 78, positive conditional: 78, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 47, positive: 44, positive conditional: 8, positive unconditional: 36, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 47, positive: 44, positive conditional: 8, positive unconditional: 36, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 47, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 13, negative conditional: 5, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 85, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 47, unknown conditional: 47, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 906, Positive cache size: 849, Positive conditional cache size: 849, Positive unconditional cache size: 0, Negative cache size: 57, Negative conditional cache size: 57, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 97.7ms, 44 PlacesBefore, 42 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 54 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 26, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 908, Positive cache size: 850, Positive conditional cache size: 850, Positive unconditional cache size: 0, Negative cache size: 58, Negative conditional cache size: 58, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4ms, 35 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 908, Positive cache size: 850, Positive conditional cache size: 850, Positive unconditional cache size: 0, Negative cache size: 58, Negative conditional cache size: 58, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10633.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 589.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8867.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 SDtfs, 39 SDslu, 15 SDs, 0 SdLazy, 60 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.7ms SsaConstructionTime, 155.9ms SatisfiabilityAnalysisTime, 456.9ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 425 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...