/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:06:50,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:06:50,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:06:50,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:06:50,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:06:50,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:06:50,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:06:50,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:06:50,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:06:50,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:06:50,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:06:50,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:06:50,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:06:50,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:06:50,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:06:50,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:06:50,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:06:50,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:06:50,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:06:50,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:06:50,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:06:50,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:06:50,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:06:50,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:06:50,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:06:50,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:06:50,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:06:50,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:06:50,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:06:50,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:06:50,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:06:50,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:06:50,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:06:50,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:06:50,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:06:50,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:06:50,732 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-VariableLbe.epf [2021-03-24 11:06:50,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:06:50,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:06:50,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:06:50,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:06:50,769 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:06:50,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:06:50,769 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:06:50,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:06:50,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:06:50,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:06:50,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:06:50,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:06:50,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:06:50,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:06:50,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:06:50,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:06:50,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:06:50,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:06:50,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:06:50,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:06:50,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:06:50,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:06:50,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:06:50,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:06:50,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:06:50,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:06:50,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:06:50,774 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:06:50,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:06:50,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:06:51,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:06:51,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:06:51,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:06:51,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:06:51,106 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:06:51,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc.i [2021-03-24 11:06:51,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6120907/22897c86385f455eb1da2360f1a361c8/FLAGd70410eac [2021-03-24 11:06:51,799 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:06:51,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.oepc.i [2021-03-24 11:06:51,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6120907/22897c86385f455eb1da2360f1a361c8/FLAGd70410eac [2021-03-24 11:06:51,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6120907/22897c86385f455eb1da2360f1a361c8 [2021-03-24 11:06:51,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:06:51,979 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:06:51,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:06:51,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:06:51,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:06:51,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:06:51" (1/1) ... [2021-03-24 11:06:51,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7947db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:51, skipping insertion in model container [2021-03-24 11:06:51,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:06:51" (1/1) ... [2021-03-24 11:06:51,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:06:52,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:06:52,234 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/safe029_power.oepc.i[952,965] [2021-03-24 11:06:52,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:06:52,367 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:06:52,377 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/safe029_power.oepc.i[952,965] [2021-03-24 11:06:52,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:06:52,493 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:06:52,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52 WrapperNode [2021-03-24 11:06:52,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:06:52,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:06:52,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:06:52,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:06:52,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:06:52,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:06:52,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:06:52,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:06:52,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... [2021-03-24 11:06:52,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:06:52,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:06:52,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:06:52,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:06:52,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:06:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:06:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:06:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:06:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:06:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:06:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:06:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:06:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:06:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:06:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:06:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:06:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:06:52,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:06:54,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:06:54,156 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 11:06:54,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:06:54 BoogieIcfgContainer [2021-03-24 11:06:54,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:06:54,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:06:54,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:06:54,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:06:54,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:06:51" (1/3) ... [2021-03-24 11:06:54,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6934d19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:06:54, skipping insertion in model container [2021-03-24 11:06:54,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:52" (2/3) ... [2021-03-24 11:06:54,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6934d19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:06:54, skipping insertion in model container [2021-03-24 11:06:54,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:06:54" (3/3) ... [2021-03-24 11:06:54,164 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.oepc.i [2021-03-24 11:06:54,169 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:06:54,173 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 11:06:54,173 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:06:54,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,208 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:54,229 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:06:54,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:06:54,258 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:06:54,259 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:06:54,259 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:06:54,259 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:06:54,259 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:06:54,259 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:06:54,259 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:06:54,259 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:06:54,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 11:06:54,293 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 11:06:54,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:54,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 11:06:54,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 11:06:54,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 160 flow [2021-03-24 11:06:54,300 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:06:54,307 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 11:06:54,310 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 11:06:54,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 160 flow [2021-03-24 11:06:54,324 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 11:06:54,324 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:54,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 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. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 11:06:54,326 INFO L142 LiptonReduction]: Number of co-enabled transitions 926 [2021-03-24 11:06:55,485 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2021-03-24 11:06:55,765 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2021-03-24 11:06:57,191 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 308 DAG size of output: 263 [2021-03-24 11:06:57,797 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2021-03-24 11:06:58,156 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 11:06:58,509 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 11:06:58,612 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 11:06:59,331 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 11:06:59,625 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 11:07:00,290 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 11:07:00,842 WARN L205 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 11:07:01,148 INFO L154 LiptonReduction]: Checked pairs total: 1628 [2021-03-24 11:07:01,148 INFO L156 LiptonReduction]: Total number of compositions: 55 [2021-03-24 11:07:01,150 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6851 [2021-03-24 11:07:01,160 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 11:07:01,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:01,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:01,161 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:01,161 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash 730483881, now seen corresponding path program 1 times [2021-03-24 11:07:01,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:01,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616298810] [2021-03-24 11:07:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:01,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:01,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:01,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616298810] [2021-03-24 11:07:01,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:01,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:07:01,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246817390] [2021-03-24 11:07:01,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:07:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:01,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:07:01,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:07:01,460 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-03-24 11:07:01,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:01,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-03-24 11:07:01,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:01,537 INFO L129 PetriNetUnfolder]: 23/89 cut-off events. [2021-03-24 11:07:01,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:01,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 89 events. 23/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 340 event pairs, 16 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 130. Up to 37 conditions per place. [2021-03-24 11:07:01,541 INFO L132 encePairwiseOnDemand]: 130/134 looper letters, 7 selfloop transitions, 2 changer transitions 5/30 dead transitions. [2021-03-24 11:07:01,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 88 flow [2021-03-24 11:07:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:07:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:07:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-24 11:07:01,558 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706467661691543 [2021-03-24 11:07:01,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-24 11:07:01,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-24 11:07:01,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:01,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-24 11:07:01,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 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) [2021-03-24 11:07:01,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 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) [2021-03-24 11:07:01,580 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 64 flow. Second operand 3 states and 350 transitions. [2021-03-24 11:07:01,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 88 flow [2021-03-24 11:07:01,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:01,584 INFO L241 Difference]: Finished difference. Result has 33 places, 22 transitions, 52 flow [2021-03-24 11:07:01,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2021-03-24 11:07:01,587 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2021-03-24 11:07:01,589 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 52 flow [2021-03-24 11:07:01,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:01,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:01,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:07:01,590 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1358233529, now seen corresponding path program 1 times [2021-03-24 11:07:01,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:01,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122349400] [2021-03-24 11:07:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:01,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:01,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:01,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:01,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122349400] [2021-03-24 11:07:01,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:01,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:01,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129053071] [2021-03-24 11:07:01,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:01,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:01,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:01,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 134 [2021-03-24 11:07:01,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:01,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 134 [2021-03-24 11:07:01,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:01,799 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2021-03-24 11:07:01,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:01,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 2 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 65. Up to 15 conditions per place. [2021-03-24 11:07:01,799 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 4 selfloop transitions, 3 changer transitions 5/29 dead transitions. [2021-03-24 11:07:01,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 90 flow [2021-03-24 11:07:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2021-03-24 11:07:01,802 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8641791044776119 [2021-03-24 11:07:01,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2021-03-24 11:07:01,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2021-03-24 11:07:01,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:01,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2021-03-24 11:07:01,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,807 INFO L185 Difference]: Start difference. First operand has 33 places, 22 transitions, 52 flow. Second operand 5 states and 579 transitions. [2021-03-24 11:07:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 90 flow [2021-03-24 11:07:01,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:01,808 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 75 flow [2021-03-24 11:07:01,808 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-24 11:07:01,808 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2021-03-24 11:07:01,809 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 75 flow [2021-03-24 11:07:01,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,809 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:01,809 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:01,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:07:01,810 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:01,810 INFO L82 PathProgramCache]: Analyzing trace with hash 818290874, now seen corresponding path program 1 times [2021-03-24 11:07:01,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:01,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593679057] [2021-03-24 11:07:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:01,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:01,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:01,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:01,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:01,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:01,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:01,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593679057] [2021-03-24 11:07:01,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:01,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:01,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200428537] [2021-03-24 11:07:01,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:07:01,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:07:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:07:01,980 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 134 [2021-03-24 11:07:01,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 75 flow. Second operand has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:01,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:01,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 134 [2021-03-24 11:07:01,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:02,114 INFO L129 PetriNetUnfolder]: 50/134 cut-off events. [2021-03-24 11:07:02,114 INFO L130 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2021-03-24 11:07:02,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 134 events. 50/134 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 514 event pairs, 13 based on Foata normal form. 13/142 useless extension candidates. Maximal degree in co-relation 282. Up to 74 conditions per place. [2021-03-24 11:07:02,116 INFO L132 encePairwiseOnDemand]: 127/134 looper letters, 9 selfloop transitions, 6 changer transitions 10/40 dead transitions. [2021-03-24 11:07:02,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 161 flow [2021-03-24 11:07:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 707 transitions. [2021-03-24 11:07:02,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.753731343283582 [2021-03-24 11:07:02,118 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 707 transitions. [2021-03-24 11:07:02,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 707 transitions. [2021-03-24 11:07:02,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:02,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 707 transitions. [2021-03-24 11:07:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,125 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 75 flow. Second operand 7 states and 707 transitions. [2021-03-24 11:07:02,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 161 flow [2021-03-24 11:07:02,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 156 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:02,127 INFO L241 Difference]: Finished difference. Result has 41 places, 28 transitions, 118 flow [2021-03-24 11:07:02,127 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2021-03-24 11:07:02,127 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2021-03-24 11:07:02,127 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 118 flow [2021-03-24 11:07:02,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,128 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:02,128 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:02,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:07:02,128 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:02,129 INFO L82 PathProgramCache]: Analyzing trace with hash -402810350, now seen corresponding path program 1 times [2021-03-24 11:07:02,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:02,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336409456] [2021-03-24 11:07:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:02,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:02,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:02,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:02,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336409456] [2021-03-24 11:07:02,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:02,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:02,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281645372] [2021-03-24 11:07:02,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:02,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:02,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:02,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:02,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-03-24 11:07:02,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:02,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-03-24 11:07:02,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:02,292 INFO L129 PetriNetUnfolder]: 46/123 cut-off events. [2021-03-24 11:07:02,292 INFO L130 PetriNetUnfolder]: For 253/257 co-relation queries the response was YES. [2021-03-24 11:07:02,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 123 events. 46/123 cut-off events. For 253/257 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 438 event pairs, 19 based on Foata normal form. 9/129 useless extension candidates. Maximal degree in co-relation 364. Up to 67 conditions per place. [2021-03-24 11:07:02,294 INFO L132 encePairwiseOnDemand]: 127/134 looper letters, 13 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2021-03-24 11:07:02,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 232 flow [2021-03-24 11:07:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 747 transitions. [2021-03-24 11:07:02,296 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7963752665245203 [2021-03-24 11:07:02,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 747 transitions. [2021-03-24 11:07:02,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 747 transitions. [2021-03-24 11:07:02,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:02,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 747 transitions. [2021-03-24 11:07:02,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,301 INFO L185 Difference]: Start difference. First operand has 41 places, 28 transitions, 118 flow. Second operand 7 states and 747 transitions. [2021-03-24 11:07:02,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 232 flow [2021-03-24 11:07:02,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 228 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-24 11:07:02,304 INFO L241 Difference]: Finished difference. Result has 47 places, 31 transitions, 158 flow [2021-03-24 11:07:02,304 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2021-03-24 11:07:02,305 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2021-03-24 11:07:02,305 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 158 flow [2021-03-24 11:07:02,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,305 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:02,305 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:02,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:07:02,306 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:02,306 INFO L82 PathProgramCache]: Analyzing trace with hash -457558520, now seen corresponding path program 2 times [2021-03-24 11:07:02,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:02,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363739620] [2021-03-24 11:07:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:02,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:02,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:02,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:02,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:02,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:02,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363739620] [2021-03-24 11:07:02,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:02,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:02,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547146641] [2021-03-24 11:07:02,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:02,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:02,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:02,394 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 134 [2021-03-24 11:07:02,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:02,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 134 [2021-03-24 11:07:02,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:02,502 INFO L129 PetriNetUnfolder]: 42/117 cut-off events. [2021-03-24 11:07:02,502 INFO L130 PetriNetUnfolder]: For 445/449 co-relation queries the response was YES. [2021-03-24 11:07:02,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 117 events. 42/117 cut-off events. For 445/449 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 411 event pairs, 19 based on Foata normal form. 9/123 useless extension candidates. Maximal degree in co-relation 432. Up to 64 conditions per place. [2021-03-24 11:07:02,503 INFO L132 encePairwiseOnDemand]: 127/134 looper letters, 12 selfloop transitions, 9 changer transitions 6/42 dead transitions. [2021-03-24 11:07:02,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 298 flow [2021-03-24 11:07:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 825 transitions. [2021-03-24 11:07:02,506 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.769589552238806 [2021-03-24 11:07:02,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 825 transitions. [2021-03-24 11:07:02,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 825 transitions. [2021-03-24 11:07:02,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:02,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 825 transitions. [2021-03-24 11:07:02,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.125) internal successors, (825), 8 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,511 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,511 INFO L185 Difference]: Start difference. First operand has 47 places, 31 transitions, 158 flow. Second operand 8 states and 825 transitions. [2021-03-24 11:07:02,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 298 flow [2021-03-24 11:07:02,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 279 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:02,517 INFO L241 Difference]: Finished difference. Result has 52 places, 33 transitions, 194 flow [2021-03-24 11:07:02,517 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=194, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2021-03-24 11:07:02,517 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2021-03-24 11:07:02,517 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 194 flow [2021-03-24 11:07:02,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,518 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:02,518 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:02,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:07:02,518 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:02,519 INFO L82 PathProgramCache]: Analyzing trace with hash 965907673, now seen corresponding path program 1 times [2021-03-24 11:07:02,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:02,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607179651] [2021-03-24 11:07:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:02,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:02,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:02,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607179651] [2021-03-24 11:07:02,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:02,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:02,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711979933] [2021-03-24 11:07:02,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:02,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:02,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:02,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:02,616 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 134 [2021-03-24 11:07:02,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:02,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 134 [2021-03-24 11:07:02,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:02,667 INFO L129 PetriNetUnfolder]: 34/121 cut-off events. [2021-03-24 11:07:02,668 INFO L130 PetriNetUnfolder]: For 796/812 co-relation queries the response was YES. [2021-03-24 11:07:02,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 121 events. 34/121 cut-off events. For 796/812 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 537 event pairs, 14 based on Foata normal form. 9/125 useless extension candidates. Maximal degree in co-relation 493. Up to 47 conditions per place. [2021-03-24 11:07:02,669 INFO L132 encePairwiseOnDemand]: 130/134 looper letters, 5 selfloop transitions, 3 changer transitions 2/36 dead transitions. [2021-03-24 11:07:02,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 248 flow [2021-03-24 11:07:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2021-03-24 11:07:02,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8597014925373134 [2021-03-24 11:07:02,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2021-03-24 11:07:02,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2021-03-24 11:07:02,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:02,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2021-03-24 11:07:02,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,675 INFO L185 Difference]: Start difference. First operand has 52 places, 33 transitions, 194 flow. Second operand 5 states and 576 transitions. [2021-03-24 11:07:02,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 248 flow [2021-03-24 11:07:02,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 217 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 11:07:02,678 INFO L241 Difference]: Finished difference. Result has 51 places, 33 transitions, 186 flow [2021-03-24 11:07:02,678 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2021-03-24 11:07:02,678 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2021-03-24 11:07:02,678 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 186 flow [2021-03-24 11:07:02,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:02,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:02,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:07:02,679 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:02,679 INFO L82 PathProgramCache]: Analyzing trace with hash 101684217, now seen corresponding path program 1 times [2021-03-24 11:07:02,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:02,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771301581] [2021-03-24 11:07:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:02,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:02,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:02,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:02,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:02,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:02,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771301581] [2021-03-24 11:07:02,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:02,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:02,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363342923] [2021-03-24 11:07:02,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:07:02,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:02,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:07:02,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:07:02,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-03-24 11:07:02,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:02,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-03-24 11:07:02,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:02,837 INFO L129 PetriNetUnfolder]: 42/144 cut-off events. [2021-03-24 11:07:02,838 INFO L130 PetriNetUnfolder]: For 663/670 co-relation queries the response was YES. [2021-03-24 11:07:02,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 144 events. 42/144 cut-off events. For 663/670 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 668 event pairs, 14 based on Foata normal form. 10/152 useless extension candidates. Maximal degree in co-relation 542. Up to 67 conditions per place. [2021-03-24 11:07:02,839 INFO L132 encePairwiseOnDemand]: 128/134 looper letters, 13 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2021-03-24 11:07:02,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 312 flow [2021-03-24 11:07:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:07:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:07:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 638 transitions. [2021-03-24 11:07:02,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7935323383084577 [2021-03-24 11:07:02,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 638 transitions. [2021-03-24 11:07:02,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 638 transitions. [2021-03-24 11:07:02,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:02,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 638 transitions. [2021-03-24 11:07:02,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.33333333333333) internal successors, (638), 6 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,845 INFO L185 Difference]: Start difference. First operand has 51 places, 33 transitions, 186 flow. Second operand 6 states and 638 transitions. [2021-03-24 11:07:02,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 312 flow [2021-03-24 11:07:02,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 299 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:02,848 INFO L241 Difference]: Finished difference. Result has 54 places, 35 transitions, 228 flow [2021-03-24 11:07:02,848 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=54, PETRI_TRANSITIONS=35} [2021-03-24 11:07:02,849 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2021-03-24 11:07:02,849 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 35 transitions, 228 flow [2021-03-24 11:07:02,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:02,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:02,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:02,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:07:02,849 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1353260549, now seen corresponding path program 1 times [2021-03-24 11:07:02,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:02,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406849765] [2021-03-24 11:07:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:02,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:02,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:02,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 11:07:02,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 11:07:02,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:02,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:02,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 11:07:03,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:03,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406849765] [2021-03-24 11:07:03,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:03,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 11:07:03,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311217056] [2021-03-24 11:07:03,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 11:07:03,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:03,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 11:07:03,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 11:07:03,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2021-03-24 11:07:03,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 35 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:03,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2021-03-24 11:07:03,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:03,160 INFO L129 PetriNetUnfolder]: 42/136 cut-off events. [2021-03-24 11:07:03,160 INFO L130 PetriNetUnfolder]: For 665/670 co-relation queries the response was YES. [2021-03-24 11:07:03,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 136 events. 42/136 cut-off events. For 665/670 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 601 event pairs, 17 based on Foata normal form. 6/139 useless extension candidates. Maximal degree in co-relation 602. Up to 77 conditions per place. [2021-03-24 11:07:03,162 INFO L132 encePairwiseOnDemand]: 126/134 looper letters, 13 selfloop transitions, 7 changer transitions 10/45 dead transitions. [2021-03-24 11:07:03,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 380 flow [2021-03-24 11:07:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 870 transitions. [2021-03-24 11:07:03,165 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7213930348258707 [2021-03-24 11:07:03,165 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 870 transitions. [2021-03-24 11:07:03,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 870 transitions. [2021-03-24 11:07:03,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:03,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 870 transitions. [2021-03-24 11:07:03,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.66666666666667) internal successors, (870), 9 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,171 INFO L185 Difference]: Start difference. First operand has 54 places, 35 transitions, 228 flow. Second operand 9 states and 870 transitions. [2021-03-24 11:07:03,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 380 flow [2021-03-24 11:07:03,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 351 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:03,175 INFO L241 Difference]: Finished difference. Result has 62 places, 33 transitions, 232 flow [2021-03-24 11:07:03,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=62, PETRI_TRANSITIONS=33} [2021-03-24 11:07:03,175 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2021-03-24 11:07:03,175 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 33 transitions, 232 flow [2021-03-24 11:07:03,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:03,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:03,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:07:03,176 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:03,177 INFO L82 PathProgramCache]: Analyzing trace with hash 379316168, now seen corresponding path program 1 times [2021-03-24 11:07:03,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:03,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978058711] [2021-03-24 11:07:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:03,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:03,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:03,241 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:03,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:03,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:03,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978058711] [2021-03-24 11:07:03,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:03,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:03,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674479683] [2021-03-24 11:07:03,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:03,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:03,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:03,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:03,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 134 [2021-03-24 11:07:03,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 33 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:03,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 134 [2021-03-24 11:07:03,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:03,296 INFO L129 PetriNetUnfolder]: 41/143 cut-off events. [2021-03-24 11:07:03,296 INFO L130 PetriNetUnfolder]: For 571/605 co-relation queries the response was YES. [2021-03-24 11:07:03,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 143 events. 41/143 cut-off events. For 571/605 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 665 event pairs, 10 based on Foata normal form. 28/148 useless extension candidates. Maximal degree in co-relation 499. Up to 67 conditions per place. [2021-03-24 11:07:03,297 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 6 selfloop transitions, 6 changer transitions 2/39 dead transitions. [2021-03-24 11:07:03,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 39 transitions, 262 flow [2021-03-24 11:07:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 566 transitions. [2021-03-24 11:07:03,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.844776119402985 [2021-03-24 11:07:03,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 566 transitions. [2021-03-24 11:07:03,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 566 transitions. [2021-03-24 11:07:03,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:03,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 566 transitions. [2021-03-24 11:07:03,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,303 INFO L185 Difference]: Start difference. First operand has 62 places, 33 transitions, 232 flow. Second operand 5 states and 566 transitions. [2021-03-24 11:07:03,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 39 transitions, 262 flow [2021-03-24 11:07:03,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 211 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-03-24 11:07:03,308 INFO L241 Difference]: Finished difference. Result has 52 places, 36 transitions, 208 flow [2021-03-24 11:07:03,308 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2021-03-24 11:07:03,308 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2021-03-24 11:07:03,308 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 208 flow [2021-03-24 11:07:03,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:03,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:03,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:07:03,309 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1110790437, now seen corresponding path program 1 times [2021-03-24 11:07:03,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:03,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236979694] [2021-03-24 11:07:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:03,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:03,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:03,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:03,360 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:03,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:03,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:03,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236979694] [2021-03-24 11:07:03,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:03,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:03,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49952529] [2021-03-24 11:07:03,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:03,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:03,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:03,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:03,370 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 134 [2021-03-24 11:07:03,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:03,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 134 [2021-03-24 11:07:03,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:03,423 INFO L129 PetriNetUnfolder]: 21/96 cut-off events. [2021-03-24 11:07:03,424 INFO L130 PetriNetUnfolder]: For 217/320 co-relation queries the response was YES. [2021-03-24 11:07:03,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 96 events. 21/96 cut-off events. For 217/320 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 401 event pairs, 0 based on Foata normal form. 52/138 useless extension candidates. Maximal degree in co-relation 308. Up to 29 conditions per place. [2021-03-24 11:07:03,424 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 4 selfloop transitions, 9 changer transitions 8/41 dead transitions. [2021-03-24 11:07:03,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 256 flow [2021-03-24 11:07:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 788 transitions. [2021-03-24 11:07:03,427 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8400852878464818 [2021-03-24 11:07:03,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 788 transitions. [2021-03-24 11:07:03,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 788 transitions. [2021-03-24 11:07:03,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:03,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 788 transitions. [2021-03-24 11:07:03,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.57142857142857) internal successors, (788), 7 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,431 INFO L185 Difference]: Start difference. First operand has 52 places, 36 transitions, 208 flow. Second operand 7 states and 788 transitions. [2021-03-24 11:07:03,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 256 flow [2021-03-24 11:07:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 41 transitions, 226 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-24 11:07:03,434 INFO L241 Difference]: Finished difference. Result has 57 places, 32 transitions, 184 flow [2021-03-24 11:07:03,434 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2021-03-24 11:07:03,435 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2021-03-24 11:07:03,435 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 184 flow [2021-03-24 11:07:03,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,435 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:03,435 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:03,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:07:03,435 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1132742651, now seen corresponding path program 1 times [2021-03-24 11:07:03,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:03,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948255569] [2021-03-24 11:07:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:03,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:03,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:03,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 11:07:03,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 11:07:03,552 INFO L142 QuantifierPusher]: treesize reduction 26, result has 58.7 percent of original size [2021-03-24 11:07:03,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 11:07:03,580 INFO L142 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-03-24 11:07:03,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-24 11:07:03,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:03,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:03,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:03,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:03,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948255569] [2021-03-24 11:07:03,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:03,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 11:07:03,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50341140] [2021-03-24 11:07:03,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 11:07:03,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 11:07:03,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-24 11:07:03,628 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 134 [2021-03-24 11:07:03,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 94.125) internal successors, (753), 8 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:03,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 134 [2021-03-24 11:07:03,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:03,797 INFO L129 PetriNetUnfolder]: 3/48 cut-off events. [2021-03-24 11:07:03,797 INFO L130 PetriNetUnfolder]: For 125/139 co-relation queries the response was YES. [2021-03-24 11:07:03,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 48 events. 3/48 cut-off events. For 125/139 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 112 event pairs, 0 based on Foata normal form. 10/58 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2021-03-24 11:07:03,798 INFO L132 encePairwiseOnDemand]: 128/134 looper letters, 6 selfloop transitions, 5 changer transitions 6/35 dead transitions. [2021-03-24 11:07:03,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 35 transitions, 240 flow [2021-03-24 11:07:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 760 transitions. [2021-03-24 11:07:03,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7089552238805971 [2021-03-24 11:07:03,802 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 760 transitions. [2021-03-24 11:07:03,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 760 transitions. [2021-03-24 11:07:03,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:03,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 760 transitions. [2021-03-24 11:07:03,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,806 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,806 INFO L185 Difference]: Start difference. First operand has 57 places, 32 transitions, 184 flow. Second operand 8 states and 760 transitions. [2021-03-24 11:07:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 35 transitions, 240 flow [2021-03-24 11:07:03,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 35 transitions, 187 flow, removed 15 selfloop flow, removed 11 redundant places. [2021-03-24 11:07:03,808 INFO L241 Difference]: Finished difference. Result has 52 places, 29 transitions, 137 flow [2021-03-24 11:07:03,808 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=29} [2021-03-24 11:07:03,808 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2021-03-24 11:07:03,808 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 29 transitions, 137 flow [2021-03-24 11:07:03,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 94.125) internal successors, (753), 8 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:03,809 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:03,809 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:03,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 11:07:03,809 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2067669549, now seen corresponding path program 2 times [2021-03-24 11:07:03,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:03,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301304373] [2021-03-24 11:07:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:07:03,838 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:07:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:07:03,871 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:07:03,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 11:07:03,907 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 11:07:03,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 11:07:03,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:07:03 BasicIcfg [2021-03-24 11:07:03,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:07:03,970 INFO L168 Benchmark]: Toolchain (without parser) took 11991.04 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 234.4 MB in the beginning and 323.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 170.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:03,971 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:07:03,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.64 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 234.4 MB in the beginning and 316.4 MB in the end (delta: -82.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:03,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.04 ms. Allocated memory is still 356.5 MB. Free memory was 316.4 MB in the beginning and 313.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:03,971 INFO L168 Benchmark]: Boogie Preprocessor took 27.33 ms. Allocated memory is still 356.5 MB. Free memory was 313.7 MB in the beginning and 311.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:03,972 INFO L168 Benchmark]: RCFGBuilder took 1592.28 ms. Allocated memory is still 356.5 MB. Free memory was 311.6 MB in the beginning and 253.4 MB in the end (delta: 58.2 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:03,972 INFO L168 Benchmark]: TraceAbstraction took 9810.41 ms. Allocated memory was 356.5 MB in the beginning and 515.9 MB in the end (delta: 159.4 MB). Free memory was 253.4 MB in the beginning and 323.9 MB in the end (delta: -70.5 MB). Peak memory consumption was 90.0 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:03,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 511.64 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 234.4 MB in the beginning and 316.4 MB in the end (delta: -82.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.04 ms. Allocated memory is still 356.5 MB. Free memory was 316.4 MB in the beginning and 313.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.33 ms. Allocated memory is still 356.5 MB. Free memory was 313.7 MB in the beginning and 311.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1592.28 ms. Allocated memory is still 356.5 MB. Free memory was 311.6 MB in the beginning and 253.4 MB in the end (delta: 58.2 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9810.41 ms. Allocated memory was 356.5 MB in the beginning and 515.9 MB in the end (delta: 159.4 MB). Free memory was 253.4 MB in the beginning and 323.9 MB in the end (delta: -70.5 MB). Peak memory consumption was 90.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6838.3ms, 82 PlacesBefore, 35 PlacesAfterwards, 77 TransitionsBefore, 29 TransitionsAfterwards, 926 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 839, positive: 774, positive conditional: 0, positive unconditional: 774, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 444, positive: 422, positive conditional: 0, positive unconditional: 422, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 444, positive: 422, positive conditional: 0, positive unconditional: 422, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 839, positive: 352, positive conditional: 0, positive unconditional: 352, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 444, unknown conditional: 0, unknown unconditional: 444] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; [L714] 0 int y = 0; [L715] 0 _Bool y$flush_delayed; [L716] 0 int y$mem_tmp; [L717] 0 _Bool y$r_buff0_thd0; [L718] 0 _Bool y$r_buff0_thd1; [L719] 0 _Bool y$r_buff0_thd2; [L720] 0 _Bool y$r_buff1_thd0; [L721] 0 _Bool y$r_buff1_thd1; [L722] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L723] 0 _Bool y$read_delayed; [L724] 0 int *y$read_delayed_var; [L725] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L726] 0 _Bool y$w_buff0_used; [L727] 0 int y$w_buff1; [L728] 0 _Bool y$w_buff1_used; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2473; [L791] FCALL, FORK 0 pthread_create(&t2473, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2474; [L793] FCALL, FORK 0 pthread_create(&t2474, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L745] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 9652.7ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1186.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6898.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 55 SDslu, 69 SDs, 0 SdLazy, 317 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 368.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 457.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=8, InterpolantAutomatonStates: 70, 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: 35.8ms SsaConstructionTime, 396.8ms SatisfiabilityAnalysisTime, 844.7ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 909 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...