/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:31:03,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:31:03,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:31:03,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:31:03,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:31:03,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:31:03,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:31:03,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:31:03,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:31:03,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:31:03,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:31:03,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:31:03,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:31:03,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:31:03,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:31:03,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:31:03,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:31:03,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:31:03,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:31:03,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:31:03,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:31:03,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:31:03,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:31:03,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:31:03,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 10:31:03,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 10:31:03,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 10:31:03,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 10:31:03,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 10:31:03,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 10:31:03,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 10:31:03,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 10:31:03,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 10:31:03,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 10:31:03,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 10:31:03,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 10:31:03,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 10:31:03,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 10:31:03,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:31:03,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:31:03,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:31:03,832 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 10:31:03,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:31:03,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:31:03,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:31:03,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:31:03,856 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:31:03,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:31:03,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:31:03,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:31:03,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:31:03,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:31:03,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:31:03,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:31:03,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:31:03,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:31:03,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:31:03,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:31:03,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:31:03,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:31:03,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:31:03,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:31:03,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:31:03,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:31:03,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:31:03,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:31:03,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:31:03,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:31:03,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:31:03,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:31:03,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:31:03,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:31:03,865 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:31:04,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:31:04,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:31:04,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:31:04,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:31:04,171 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:31:04,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_power.opt.i [2021-03-26 10:31:04,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0497c0714/88fc9f9e1025436f8f408d59462e7798/FLAG7efec8845 [2021-03-26 10:31:04,779 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:31:04,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_power.opt.i [2021-03-26 10:31:04,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0497c0714/88fc9f9e1025436f8f408d59462e7798/FLAG7efec8845 [2021-03-26 10:31:05,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0497c0714/88fc9f9e1025436f8f408d59462e7798 [2021-03-26 10:31:05,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:31:05,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:31:05,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:31:05,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:31:05,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:31:05,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d88ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05, skipping insertion in model container [2021-03-26 10:31:05,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:31:05,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:31:05,331 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/safe010_power.opt.i[951,964] [2021-03-26 10:31:05,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:31:05,499 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:31:05,509 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/safe010_power.opt.i[951,964] [2021-03-26 10:31:05,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:31:05,610 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:31:05,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05 WrapperNode [2021-03-26 10:31:05,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:31:05,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:31:05,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:31:05,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:31:05,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:31:05,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:31:05,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:31:05,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:31:05,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (1/1) ... [2021-03-26 10:31:05,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:31:05,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:31:05,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:31:05,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:31:05,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (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 [2021-03-26 10:31:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:31:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:31:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:31:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:31:05,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:31:05,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:31:05,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:31:05,799 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 10:31:07,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:31:07,398 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-26 10:31:07,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:31:07 BoogieIcfgContainer [2021-03-26 10:31:07,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:31:07,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:31:07,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:31:07,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:31:07,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:31:05" (1/3) ... [2021-03-26 10:31:07,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5317c205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:31:07, skipping insertion in model container [2021-03-26 10:31:07,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:31:05" (2/3) ... [2021-03-26 10:31:07,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5317c205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:31:07, skipping insertion in model container [2021-03-26 10:31:07,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:31:07" (3/3) ... [2021-03-26 10:31:07,408 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_power.opt.i [2021-03-26 10:31:07,414 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:31:07,418 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-26 10:31:07,419 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:31:07,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,469 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,469 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:31:07,472 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:31:07,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 10:31:07,517 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:31:07,518 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:31:07,518 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:31:07,518 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:31:07,518 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:31:07,518 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:31:07,518 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:31:07,518 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:31:07,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 80 transitions, 170 flow [2021-03-26 10:31:07,574 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-03-26 10:31:07,574 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:07,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-26 10:31:07,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 80 transitions, 170 flow [2021-03-26 10:31:07,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 78 transitions, 162 flow [2021-03-26 10:31:07,590 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:07,607 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 162 flow [2021-03-26 10:31:07,610 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 78 transitions, 162 flow [2021-03-26 10:31:07,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 162 flow [2021-03-26 10:31:07,644 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-03-26 10:31:07,644 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:07,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 78 events. 2/78 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. 0/74 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-26 10:31:07,654 INFO L142 LiptonReduction]: Number of co-enabled transitions 926 [2021-03-26 10:31:08,611 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2021-03-26 10:31:08,939 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2021-03-26 10:31:10,261 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 308 DAG size of output: 264 [2021-03-26 10:31:10,871 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2021-03-26 10:31:11,742 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-26 10:31:12,129 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-26 10:31:12,237 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-26 10:31:13,637 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2021-03-26 10:31:13,911 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-03-26 10:31:14,491 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-26 10:31:15,164 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-26 10:31:15,173 INFO L154 LiptonReduction]: Checked pairs total: 1464 [2021-03-26 10:31:15,173 INFO L156 LiptonReduction]: Total number of compositions: 57 [2021-03-26 10:31:15,175 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7586 [2021-03-26 10:31:15,199 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-26 10:31:15,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:15,200 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:15,200 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:15,200 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1967679308, now seen corresponding path program 1 times [2021-03-26 10:31:15,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:15,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712293150] [2021-03-26 10:31:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:15,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:15,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:31:15,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:15,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:31:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:15,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712293150] [2021-03-26 10:31:15,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:15,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:31:15,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561743843] [2021-03-26 10:31:15,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 10:31:15,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:15,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 10:31:15,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 10:31:15,415 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2021-03-26 10:31:15,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:15,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:15,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2021-03-26 10:31:15,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:15,476 INFO L129 PetriNetUnfolder]: 23/92 cut-off events. [2021-03-26 10:31:15,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:15,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 92 events. 23/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 340 event pairs, 16 based on Foata normal form. 5/89 useless extension candidates. Maximal degree in co-relation 133. Up to 37 conditions per place. [2021-03-26 10:31:15,478 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 7 selfloop transitions, 2 changer transitions 5/30 dead transitions. [2021-03-26 10:31:15,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 88 flow [2021-03-26 10:31:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:31:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:31:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2021-03-26 10:31:15,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8661800486618005 [2021-03-26 10:31:15,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2021-03-26 10:31:15,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2021-03-26 10:31:15,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:15,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2021-03-26 10:31:15,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:15,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:15,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:15,505 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 64 flow. Second operand 3 states and 356 transitions. [2021-03-26 10:31:15,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 88 flow [2021-03-26 10:31:15,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:31:15,508 INFO L241 Difference]: Finished difference. Result has 33 places, 22 transitions, 52 flow [2021-03-26 10:31:15,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, 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} [2021-03-26 10:31:15,511 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2021-03-26 10:31:15,511 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:15,511 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 22 transitions, 52 flow [2021-03-26 10:31:15,511 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 22 transitions, 52 flow [2021-03-26 10:31:15,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 52 flow [2021-03-26 10:31:15,515 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 10:31:15,515 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:15,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 10:31:15,516 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-26 10:31:16,290 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-26 10:31:16,622 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-26 10:31:17,229 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-26 10:31:17,850 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-26 10:31:18,072 INFO L154 LiptonReduction]: Checked pairs total: 408 [2021-03-26 10:31:18,072 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 10:31:18,073 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2562 [2021-03-26 10:31:18,074 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 42 flow [2021-03-26 10:31:18,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:18,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:18,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:18,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:31:18,075 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash 434742666, now seen corresponding path program 1 times [2021-03-26 10:31:18,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:18,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737540671] [2021-03-26 10:31:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:18,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:18,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:31:18,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:18,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:31:18,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-26 10:31:18,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 10:31:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:18,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737540671] [2021-03-26 10:31:18,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:18,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:31:18,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798775510] [2021-03-26 10:31:18,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:31:18,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:18,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:31:18,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:31:18,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 142 [2021-03-26 10:31:18,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:18,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:18,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 142 [2021-03-26 10:31:18,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:18,248 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-26 10:31:18,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:18,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 10:31:18,249 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-03-26 10:31:18,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 48 flow [2021-03-26 10:31:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:31:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:31:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2021-03-26 10:31:18,255 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8474178403755869 [2021-03-26 10:31:18,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2021-03-26 10:31:18,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2021-03-26 10:31:18,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:18,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2021-03-26 10:31:18,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:18,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:18,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:18,266 INFO L185 Difference]: Start difference. First operand has 24 places, 17 transitions, 42 flow. Second operand 3 states and 361 transitions. [2021-03-26 10:31:18,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 48 flow [2021-03-26 10:31:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 17 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:31:18,267 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2021-03-26 10:31:18,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-26 10:31:18,268 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -10 predicate places. [2021-03-26 10:31:18,268 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:18,268 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 17 transitions, 46 flow [2021-03-26 10:31:18,269 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 17 transitions, 46 flow [2021-03-26 10:31:18,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 17 transitions, 46 flow [2021-03-26 10:31:18,273 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-26 10:31:18,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:31:18,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 10:31:18,274 INFO L142 LiptonReduction]: Number of co-enabled transitions 94 [2021-03-26 10:31:18,400 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-26 10:31:18,514 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-26 10:31:18,629 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-26 10:31:18,743 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-26 10:31:18,998 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-03-26 10:31:19,115 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-03-26 10:31:19,365 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-03-26 10:31:19,476 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-03-26 10:31:19,478 INFO L154 LiptonReduction]: Checked pairs total: 339 [2021-03-26 10:31:19,478 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:31:19,478 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1210 [2021-03-26 10:31:19,479 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 42 flow [2021-03-26 10:31:19,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:19,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:19,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:19,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:31:19,480 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:19,481 INFO L82 PathProgramCache]: Analyzing trace with hash 942494911, now seen corresponding path program 1 times [2021-03-26 10:31:19,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:19,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60815993] [2021-03-26 10:31:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:19,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:19,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:31:19,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:19,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 10:31:19,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:19,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 10:31:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:19,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60815993] [2021-03-26 10:31:19,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:19,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:31:19,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89602756] [2021-03-26 10:31:19,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:31:19,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:31:19,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:31:19,598 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 144 [2021-03-26 10:31:19,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:19,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:19,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 144 [2021-03-26 10:31:19,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:19,621 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 10:31:19,621 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-03-26 10:31:19,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 22 events. 0/22 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 10:31:19,622 INFO L132 encePairwiseOnDemand]: 140/144 looper letters, 1 selfloop transitions, 3 changer transitions 1/16 dead transitions. [2021-03-26 10:31:19,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 16 transitions, 57 flow [2021-03-26 10:31:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:31:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:31:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2021-03-26 10:31:19,624 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8246527777777778 [2021-03-26 10:31:19,624 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2021-03-26 10:31:19,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2021-03-26 10:31:19,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:19,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2021-03-26 10:31:19,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:19,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:19,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:19,627 INFO L185 Difference]: Start difference. First operand has 23 places, 15 transitions, 42 flow. Second operand 4 states and 475 transitions. [2021-03-26 10:31:19,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 16 transitions, 57 flow [2021-03-26 10:31:19,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:31:19,628 INFO L241 Difference]: Finished difference. Result has 26 places, 15 transitions, 52 flow [2021-03-26 10:31:19,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=26, PETRI_TRANSITIONS=15} [2021-03-26 10:31:19,629 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -9 predicate places. [2021-03-26 10:31:19,629 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:19,629 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 15 transitions, 52 flow [2021-03-26 10:31:19,630 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 15 transitions, 52 flow [2021-03-26 10:31:19,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 15 transitions, 52 flow [2021-03-26 10:31:19,634 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 10:31:19,635 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 10:31:19,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 10:31:19,636 INFO L142 LiptonReduction]: Number of co-enabled transitions 74 [2021-03-26 10:31:19,969 INFO L154 LiptonReduction]: Checked pairs total: 148 [2021-03-26 10:31:19,970 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:31:19,970 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 341 [2021-03-26 10:31:19,971 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 14 transitions, 50 flow [2021-03-26 10:31:19,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:19,971 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:19,971 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:19,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:31:19,972 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1529641860, now seen corresponding path program 1 times [2021-03-26 10:31:19,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:19,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455238542] [2021-03-26 10:31:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:20,068 INFO L142 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-03-26 10:31:20,069 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size 18 [2021-03-26 10:31:20,087 INFO L142 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-03-26 10:31:20,088 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size 18 [2021-03-26 10:31:20,116 INFO L142 QuantifierPusher]: treesize reduction 10, result has 65.5 percent of original size [2021-03-26 10:31:20,117 INFO L147 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size 11 [2021-03-26 10:31:20,137 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-26 10:31:20,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 10:31:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:20,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455238542] [2021-03-26 10:31:20,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:20,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:31:20,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255070218] [2021-03-26 10:31:20,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 10:31:20,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:20,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 10:31:20,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 10:31:20,149 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 145 [2021-03-26 10:31:20,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 14 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:20,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 145 [2021-03-26 10:31:20,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:20,271 INFO L129 PetriNetUnfolder]: 55/110 cut-off events. [2021-03-26 10:31:20,271 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2021-03-26 10:31:20,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 110 events. 55/110 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 20 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 258. Up to 92 conditions per place. [2021-03-26 10:31:20,273 INFO L132 encePairwiseOnDemand]: 140/145 looper letters, 13 selfloop transitions, 4 changer transitions 0/21 dead transitions. [2021-03-26 10:31:20,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 98 flow [2021-03-26 10:31:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:31:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:31:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2021-03-26 10:31:20,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6586206896551724 [2021-03-26 10:31:20,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2021-03-26 10:31:20,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2021-03-26 10:31:20,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:20,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2021-03-26 10:31:20,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,278 INFO L185 Difference]: Start difference. First operand has 25 places, 14 transitions, 50 flow. Second operand 4 states and 382 transitions. [2021-03-26 10:31:20,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 98 flow [2021-03-26 10:31:20,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 86 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-26 10:31:20,280 INFO L241 Difference]: Finished difference. Result has 25 places, 16 transitions, 59 flow [2021-03-26 10:31:20,280 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2021-03-26 10:31:20,280 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -10 predicate places. [2021-03-26 10:31:20,280 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:20,280 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 16 transitions, 59 flow [2021-03-26 10:31:20,281 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 16 transitions, 59 flow [2021-03-26 10:31:20,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 16 transitions, 59 flow [2021-03-26 10:31:20,285 INFO L129 PetriNetUnfolder]: 3/21 cut-off events. [2021-03-26 10:31:20,286 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 10:31:20,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 21 events. 3/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 38. Up to 10 conditions per place. [2021-03-26 10:31:20,286 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-26 10:31:20,321 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-26 10:31:20,321 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:31:20,321 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-26 10:31:20,322 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 59 flow [2021-03-26 10:31:20,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,322 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:20,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:20,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:31:20,323 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:20,323 INFO L82 PathProgramCache]: Analyzing trace with hash 2037445189, now seen corresponding path program 1 times [2021-03-26 10:31:20,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:20,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596936807] [2021-03-26 10:31:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:20,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:20,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:31:20,373 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:31:20,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:31:20,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:20,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:31:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:20,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596936807] [2021-03-26 10:31:20,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:20,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:31:20,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560253256] [2021-03-26 10:31:20,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:31:20,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:20,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:31:20,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:31:20,385 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 145 [2021-03-26 10:31:20,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:20,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 145 [2021-03-26 10:31:20,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:20,426 INFO L129 PetriNetUnfolder]: 10/42 cut-off events. [2021-03-26 10:31:20,426 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 10:31:20,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 42 events. 10/42 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 114 event pairs, 4 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 87. Up to 19 conditions per place. [2021-03-26 10:31:20,426 INFO L132 encePairwiseOnDemand]: 140/145 looper letters, 4 selfloop transitions, 5 changer transitions 3/23 dead transitions. [2021-03-26 10:31:20,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 97 flow [2021-03-26 10:31:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:31:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:31:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 584 transitions. [2021-03-26 10:31:20,429 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8055172413793104 [2021-03-26 10:31:20,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 584 transitions. [2021-03-26 10:31:20,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 584 transitions. [2021-03-26 10:31:20,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:20,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 584 transitions. [2021-03-26 10:31:20,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 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) [2021-03-26 10:31:20,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 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) [2021-03-26 10:31:20,433 INFO L185 Difference]: Start difference. First operand has 25 places, 16 transitions, 59 flow. Second operand 5 states and 584 transitions. [2021-03-26 10:31:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 97 flow [2021-03-26 10:31:20,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:31:20,434 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 91 flow [2021-03-26 10:31:20,434 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-26 10:31:20,434 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2021-03-26 10:31:20,434 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:20,434 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 20 transitions, 91 flow [2021-03-26 10:31:20,435 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 20 transitions, 91 flow [2021-03-26 10:31:20,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 20 transitions, 91 flow [2021-03-26 10:31:20,440 INFO L129 PetriNetUnfolder]: 6/36 cut-off events. [2021-03-26 10:31:20,441 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2021-03-26 10:31:20,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 36 events. 6/36 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 90 event pairs, 3 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 86. Up to 14 conditions per place. [2021-03-26 10:31:20,441 INFO L142 LiptonReduction]: Number of co-enabled transitions 66 [2021-03-26 10:31:20,474 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-26 10:31:20,474 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:31:20,475 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-26 10:31:20,475 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 91 flow [2021-03-26 10:31:20,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,476 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:20,476 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:20,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 10:31:20,476 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1540542662, now seen corresponding path program 1 times [2021-03-26 10:31:20,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:20,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330172923] [2021-03-26 10:31:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:20,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:20,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:31:20,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:20,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:31:20,571 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:31:20,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:31:20,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:20,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:31:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:20,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330172923] [2021-03-26 10:31:20,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:20,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:31:20,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760200711] [2021-03-26 10:31:20,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:31:20,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:20,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:31:20,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:31:20,582 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 145 [2021-03-26 10:31:20,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:20,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 145 [2021-03-26 10:31:20,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:20,624 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-26 10:31:20,624 INFO L130 PetriNetUnfolder]: For 30/40 co-relation queries the response was YES. [2021-03-26 10:31:20,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 28 events. 3/28 cut-off events. For 30/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 14/42 useless extension candidates. Maximal degree in co-relation 79. Up to 12 conditions per place. [2021-03-26 10:31:20,625 INFO L132 encePairwiseOnDemand]: 140/145 looper letters, 2 selfloop transitions, 8 changer transitions 2/23 dead transitions. [2021-03-26 10:31:20,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 129 flow [2021-03-26 10:31:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:31:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:31:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 812 transitions. [2021-03-26 10:31:20,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-03-26 10:31:20,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 812 transitions. [2021-03-26 10:31:20,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 812 transitions. [2021-03-26 10:31:20,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:20,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 812 transitions. [2021-03-26 10:31:20,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,632 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:20,632 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 91 flow. Second operand 7 states and 812 transitions. [2021-03-26 10:31:20,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 129 flow [2021-03-26 10:31:20,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 123 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-26 10:31:20,634 INFO L241 Difference]: Finished difference. Result has 38 places, 21 transitions, 118 flow [2021-03-26 10:31:20,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2021-03-26 10:31:20,634 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2021-03-26 10:31:20,634 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:20,634 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 21 transitions, 118 flow [2021-03-26 10:31:20,635 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 21 transitions, 118 flow [2021-03-26 10:31:20,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 21 transitions, 118 flow [2021-03-26 10:31:20,639 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-26 10:31:20,639 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2021-03-26 10:31:20,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 24 events. 2/24 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 67. Up to 10 conditions per place. [2021-03-26 10:31:20,640 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-26 10:31:20,964 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-26 10:31:21,109 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-26 10:31:21,855 WARN L205 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 189 [2021-03-26 10:31:22,172 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-03-26 10:31:23,523 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 344 DAG size of output: 265 [2021-03-26 10:31:24,019 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2021-03-26 10:31:24,022 INFO L154 LiptonReduction]: Checked pairs total: 53 [2021-03-26 10:31:24,022 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 10:31:24,022 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3388 [2021-03-26 10:31:24,023 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 96 flow [2021-03-26 10:31:24,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:24,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:24,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:24,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 10:31:24,024 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1404694880, now seen corresponding path program 1 times [2021-03-26 10:31:24,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:24,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710151270] [2021-03-26 10:31:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:31:24,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:24,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 10:31:24,126 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.2 percent of original size [2021-03-26 10:31:24,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 10:31:24,161 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.2 percent of original size [2021-03-26 10:31:24,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 10:31:24,193 INFO L142 QuantifierPusher]: treesize reduction 26, result has 63.4 percent of original size [2021-03-26 10:31:24,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 10:31:24,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:24,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 10:31:24,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:31:24,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 10:31:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:31:24,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710151270] [2021-03-26 10:31:24,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:31:24,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 10:31:24,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319565228] [2021-03-26 10:31:24,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-26 10:31:24,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:31:24,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-26 10:31:24,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-26 10:31:24,280 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 148 [2021-03-26 10:31:24,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 96 flow. Second operand has 8 states, 8 states have (on average 102.875) internal successors, (823), 8 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:24,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:31:24,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 148 [2021-03-26 10:31:24,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:31:24,368 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-26 10:31:24,368 INFO L130 PetriNetUnfolder]: For 140/145 co-relation queries the response was YES. [2021-03-26 10:31:24,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 27 events. 3/27 cut-off events. For 140/145 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 6/33 useless extension candidates. Maximal degree in co-relation 97. Up to 12 conditions per place. [2021-03-26 10:31:24,369 INFO L132 encePairwiseOnDemand]: 142/148 looper letters, 5 selfloop transitions, 4 changer transitions 2/18 dead transitions. [2021-03-26 10:31:24,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 130 flow [2021-03-26 10:31:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 10:31:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 10:31:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 624 transitions. [2021-03-26 10:31:24,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2021-03-26 10:31:24,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 624 transitions. [2021-03-26 10:31:24,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 624 transitions. [2021-03-26 10:31:24,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:31:24,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 624 transitions. [2021-03-26 10:31:24,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2021-03-26 10:31:24,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:24,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:24,375 INFO L185 Difference]: Start difference. First operand has 34 places, 16 transitions, 96 flow. Second operand 6 states and 624 transitions. [2021-03-26 10:31:24,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 130 flow [2021-03-26 10:31:24,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 99 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-26 10:31:24,376 INFO L241 Difference]: Finished difference. Result has 30 places, 15 transitions, 77 flow [2021-03-26 10:31:24,376 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2021-03-26 10:31:24,377 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2021-03-26 10:31:24,377 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:31:24,377 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 15 transitions, 77 flow [2021-03-26 10:31:24,377 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 15 transitions, 77 flow [2021-03-26 10:31:24,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 15 transitions, 77 flow [2021-03-26 10:31:24,380 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-26 10:31:24,381 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-26 10:31:24,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 22 events. 2/22 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 54. Up to 8 conditions per place. [2021-03-26 10:31:24,381 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 10:31:24,575 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-26 10:31:25,032 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2021-03-26 10:31:25,178 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-03-26 10:31:25,180 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:31:25,180 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:31:25,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 803 [2021-03-26 10:31:25,180 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 80 flow [2021-03-26 10:31:25,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 102.875) internal successors, (823), 8 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:31:25,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:31:25,181 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:31:25,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 10:31:25,181 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:31:25,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:31:25,181 INFO L82 PathProgramCache]: Analyzing trace with hash 433911784, now seen corresponding path program 1 times [2021-03-26 10:31:25,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:31:25,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916605861] [2021-03-26 10:31:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:31:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 10:31:25,256 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 10:31:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 10:31:25,277 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 10:31:25,300 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 10:31:25,300 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 10:31:25,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 10:31:25,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:31:25 BasicIcfg [2021-03-26 10:31:25,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:31:25,352 INFO L168 Benchmark]: Toolchain (without parser) took 20245.92 ms. Allocated memory was 255.9 MB in the beginning and 520.1 MB in the end (delta: 264.2 MB). Free memory was 233.4 MB in the beginning and 476.7 MB in the end (delta: -243.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-26 10:31:25,353 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:31:25,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.09 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 233.0 MB in the beginning and 304.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 10:31:25,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.15 ms. Allocated memory is still 343.9 MB. Free memory was 304.3 MB in the beginning and 301.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-26 10:31:25,353 INFO L168 Benchmark]: Boogie Preprocessor took 25.67 ms. Allocated memory is still 343.9 MB. Free memory was 301.5 MB in the beginning and 299.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:31:25,354 INFO L168 Benchmark]: RCFGBuilder took 1690.25 ms. Allocated memory is still 343.9 MB. Free memory was 299.4 MB in the beginning and 265.6 MB in the end (delta: 33.8 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:31:25,354 INFO L168 Benchmark]: TraceAbstraction took 17949.09 ms. Allocated memory was 343.9 MB in the beginning and 520.1 MB in the end (delta: 176.2 MB). Free memory was 265.6 MB in the beginning and 476.7 MB in the end (delta: -211.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:31:25,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 505.09 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 233.0 MB in the beginning and 304.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 70.15 ms. Allocated memory is still 343.9 MB. Free memory was 304.3 MB in the beginning and 301.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.67 ms. Allocated memory is still 343.9 MB. Free memory was 301.5 MB in the beginning and 299.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1690.25 ms. Allocated memory is still 343.9 MB. Free memory was 299.4 MB in the beginning and 265.6 MB in the end (delta: 33.8 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 17949.09 ms. Allocated memory was 343.9 MB in the beginning and 520.1 MB in the end (delta: 176.2 MB). Free memory was 265.6 MB in the beginning and 476.7 MB in the end (delta: -211.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7563.6ms, 83 PlacesBefore, 35 PlacesAfterwards, 78 TransitionsBefore, 29 TransitionsAfterwards, 926 CoEnabledTransitionPairs, 4 FixpointIterations, 27 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 1464 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 774, positive: 727, positive conditional: 727, positive unconditional: 0, negative: 47, negative conditional: 47, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 774, positive: 727, positive conditional: 0, positive unconditional: 727, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 774, positive: 727, positive conditional: 0, positive unconditional: 727, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 604, positive: 581, positive conditional: 0, positive unconditional: 581, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 604, positive: 577, positive conditional: 0, positive unconditional: 577, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 324, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 310, negative conditional: 0, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 774, positive: 146, positive conditional: 0, positive unconditional: 146, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 604, unknown conditional: 0, unknown unconditional: 604] , Statistics on independence cache: Total cache size (in pairs): 604, Positive cache size: 581, Positive conditional cache size: 0, Positive unconditional cache size: 581, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2561.0ms, 33 PlacesBefore, 24 PlacesAfterwards, 22 TransitionsBefore, 17 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 408 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 143, positive: 97, positive conditional: 97, positive unconditional: 0, negative: 46, negative conditional: 46, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 143, positive: 97, positive conditional: 16, positive unconditional: 81, negative: 46, negative conditional: 7, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 143, positive: 97, positive conditional: 16, positive unconditional: 81, negative: 46, negative conditional: 7, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 54, positive: 42, positive conditional: 7, positive unconditional: 35, negative: 12, negative conditional: 2, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 54, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 2, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 180, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 180, negative conditional: 30, negative unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 143, positive: 55, positive conditional: 9, positive unconditional: 46, negative: 34, negative conditional: 5, negative unconditional: 29, unknown: 54, unknown conditional: 9, unknown unconditional: 45] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 623, Positive conditional cache size: 7, Positive unconditional cache size: 616, Negative cache size: 35, Negative conditional cache size: 2, Negative unconditional cache size: 33, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1209.5ms, 25 PlacesBefore, 23 PlacesAfterwards, 17 TransitionsBefore, 15 TransitionsAfterwards, 94 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 339 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 119, positive: 77, positive conditional: 77, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 119, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 119, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 119, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 672, Positive cache size: 636, Positive conditional cache size: 7, Positive unconditional cache size: 629, Negative cache size: 36, Negative conditional cache size: 2, Negative unconditional cache size: 34, Eliminated conditions: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 339.9ms, 26 PlacesBefore, 25 PlacesAfterwards, 15 TransitionsBefore, 14 TransitionsAfterwards, 74 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 148 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 46, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 46, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 199, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 199, negative conditional: 0, negative unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 46, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 678, Positive cache size: 636, Positive conditional cache size: 7, Positive unconditional cache size: 629, Negative cache size: 42, Negative conditional cache size: 2, Negative unconditional cache size: 40, Eliminated conditions: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.4ms, 25 PlacesBefore, 25 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 63 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 18, positive: 9, positive conditional: 5, positive unconditional: 4, negative: 9, negative conditional: 2, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 9, positive conditional: 5, positive unconditional: 4, negative: 9, negative conditional: 2, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 33, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18, positive: 8, positive conditional: 4, positive unconditional: 4, negative: 8, negative conditional: 1, negative unconditional: 7, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 680, Positive cache size: 637, Positive conditional cache size: 8, Positive unconditional cache size: 629, Negative cache size: 43, Negative conditional cache size: 3, Negative unconditional cache size: 40, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.8ms, 30 PlacesBefore, 30 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 66 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 32, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 32, negative conditional: 32, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 682, Positive cache size: 637, Positive conditional cache size: 8, Positive unconditional cache size: 629, Negative cache size: 45, Negative conditional cache size: 5, Negative unconditional cache size: 40, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3387.6ms, 38 PlacesBefore, 34 PlacesAfterwards, 21 TransitionsBefore, 16 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 53 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 37, positive: 17, positive conditional: 14, positive unconditional: 3, negative: 20, negative conditional: 12, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 17, positive conditional: 14, positive unconditional: 3, negative: 20, negative conditional: 12, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 27, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 37, positive: 15, positive conditional: 12, positive unconditional: 3, negative: 18, negative conditional: 11, negative unconditional: 7, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 686, Positive cache size: 639, Positive conditional cache size: 10, Positive unconditional cache size: 629, Negative cache size: 47, Negative conditional cache size: 6, Negative unconditional cache size: 41, Eliminated conditions: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 802.7ms, 30 PlacesBefore, 29 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 686, Positive cache size: 639, Positive conditional cache size: 10, Positive unconditional cache size: 629, Negative cache size: 47, Negative conditional cache size: 6, Negative unconditional cache size: 41, Eliminated conditions: 0 - 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; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L717] 0 _Bool y$flush_delayed; [L718] 0 int y$mem_tmp; [L719] 0 _Bool y$r_buff0_thd0; [L720] 0 _Bool y$r_buff0_thd1; [L721] 0 _Bool y$r_buff0_thd2; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$read_delayed; [L726] 0 int *y$read_delayed_var; [L727] 0 int y$w_buff0; [L728] 0 _Bool y$w_buff0_used; [L729] 0 int y$w_buff1; [L730] 0 _Bool y$w_buff1_used; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L792] 0 pthread_t t2011; [L793] FCALL, FORK 0 pthread_create(&t2011, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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] [L736] 1 y$w_buff1 = y$w_buff0 [L737] 1 y$w_buff0 = 2 [L738] 1 y$w_buff1_used = y$w_buff0_used [L739] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L741] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L742] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L743] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L744] 1 y$r_buff0_thd1 = (_Bool)1 [L747] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$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] [L794] 0 pthread_t t2012; [L795] FCALL, FORK 0 pthread_create(&t2012, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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] [L764] 2 __unbuffered_p1_EAX = x [L767] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, 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] [L750] 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) [L750] 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) [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L751] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L752] 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 [L753] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L753] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L754] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L754] 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 [L757] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L759] 1 return 0; [L770] 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) [L770] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L770] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L771] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L772] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L773] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L773] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L774] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L774] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L777] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L779] 2 return 0; [L797] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L801] 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) [L801] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L801] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L802] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L803] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L804] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L804] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L805] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L805] 0 y$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 [L808] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L809] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L810] 0 y$flush_delayed = weak$$choice2 [L811] 0 y$mem_tmp = y [L812] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L812] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L813] EXPR 0 weak$$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$w_buff0)) [L813] EXPR 0 !y$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) [L813] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L813] 0 y$w_buff0 = weak$$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)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L814] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L814] EXPR 0 weak$$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$w_buff1)) [L814] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L815] EXPR 0 weak$$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)) [L815] EXPR 0 !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) [L815] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L815] 0 y$w_buff0_used = weak$$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)) [L816] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L816] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] EXPR 0 weak$$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)) [L817] EXPR 0 !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) [L817] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L817] 0 y$r_buff0_thd0 = weak$$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)) [L818] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L818] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L818] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L818] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L819] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 1) [L820] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L820] 0 y = y$flush_delayed ? y$mem_tmp : y [L821] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=1, 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, 79 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 17788.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 500.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7679.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 13 SDslu, 18 SDs, 0 SdLazy, 110 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 153.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 289.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=6, InterpolantAutomatonStates: 32, 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: 24.0ms SsaConstructionTime, 313.5ms SatisfiabilityAnalysisTime, 680.4ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...