/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/safe037_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:44:22,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:44:22,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:44:22,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:44:22,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:44:22,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:44:22,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:44:22,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:44:22,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:44:22,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:44:22,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:44:22,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:44:22,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:44:22,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:44:22,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:44:22,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:44:22,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:44:22,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:44:22,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:44:22,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:44:22,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:44:22,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:44:22,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:44:22,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:44:22,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 10:44:22,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 10:44:22,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 10:44:22,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 10:44:22,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 10:44:22,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 10:44:22,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 10:44:22,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 10:44:22,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 10:44:22,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:44:22,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:44:22,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:44:22,401 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 10:44:22,441 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:44:22,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:44:22,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:44:22,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:44:22,446 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:44:22,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:44:22,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:44:22,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:44:22,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:44:22,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:44:22,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:44:22,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:44:22,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:44:22,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:44:22,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:44:22,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:44:22,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:44:22,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:44:22,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:44:22,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:44:22,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:44:22,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:44:22,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:44:22,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:44:22,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:44:22,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:44:22,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:44:22,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:44:22,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:44:22,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:44:22,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:44:22,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:44:22,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:44:22,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:44:22,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:44:22,845 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:44:22,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2021-03-26 10:44:22,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3444c49/499c14f0d432462885ba75d95440661e/FLAG26f5cf149 [2021-03-26 10:44:23,538 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:44:23,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2021-03-26 10:44:23,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3444c49/499c14f0d432462885ba75d95440661e/FLAG26f5cf149 [2021-03-26 10:44:23,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3444c49/499c14f0d432462885ba75d95440661e [2021-03-26 10:44:23,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:44:23,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:44:23,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:44:23,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:44:23,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:44:23,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:44:23" (1/1) ... [2021-03-26 10:44:23,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7daad7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:23, skipping insertion in model container [2021-03-26 10:44:23,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:44:23" (1/1) ... [2021-03-26 10:44:23,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:44:23,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:44:24,112 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/safe037_power.opt.i[951,964] [2021-03-26 10:44:24,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:44:24,281 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:44:24,298 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/safe037_power.opt.i[951,964] [2021-03-26 10:44:24,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:44:24,420 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:44:24,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24 WrapperNode [2021-03-26 10:44:24,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:44:24,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:44:24,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:44:24,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:44:24,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:44:24,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:44:24,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:44:24,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:44:24,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (1/1) ... [2021-03-26 10:44:24,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:44:24,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:44:24,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:44:24,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:44:24,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (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 10:44:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:44:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:44:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:44:24,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:44:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:44:24,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:44:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:44:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:44:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 10:44:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 10:44:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:44:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:44:24,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:44:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:44:24,623 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 10:44:24,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:44:25,000 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 10:44:25,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:44:25 BoogieIcfgContainer [2021-03-26 10:44:25,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:44:25,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:44:25,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:44:25,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:44:25,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:44:23" (1/3) ... [2021-03-26 10:44:25,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a27e8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:44:25, skipping insertion in model container [2021-03-26 10:44:25,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:44:24" (2/3) ... [2021-03-26 10:44:25,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a27e8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:44:25, skipping insertion in model container [2021-03-26 10:44:25,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:44:25" (3/3) ... [2021-03-26 10:44:25,010 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_power.opt.i [2021-03-26 10:44:25,016 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:44:25,021 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 10:44:25,022 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:44:25,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:44:25,065 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:44:25,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 10:44:25,106 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:44:25,106 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:44:25,106 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:44:25,106 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:44:25,106 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:44:25,106 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:44:25,106 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:44:25,106 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:44:25,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-26 10:44:25,180 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-26 10:44:25,180 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:44:25,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 10:44:25,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-26 10:44:25,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-26 10:44:25,206 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:25,222 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-26 10:44:25,227 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-26 10:44:25,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-26 10:44:25,256 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-26 10:44:25,256 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:44:25,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 10:44:25,260 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 10:44:26,880 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-26 10:44:27,061 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-26 10:44:27,116 INFO L154 LiptonReduction]: Checked pairs total: 1113 [2021-03-26 10:44:27,117 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-26 10:44:27,119 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1914 [2021-03-26 10:44:27,129 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-26 10:44:27,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:44:27,129 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:44:27,130 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:44:27,130 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:44:27,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:44:27,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1481665802, now seen corresponding path program 1 times [2021-03-26 10:44:27,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:44:27,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838815629] [2021-03-26 10:44:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:44:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:44:27,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:27,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:27,458 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:44:27,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:44:27,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:27,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:44:27,479 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 10:44:27,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838815629] [2021-03-26 10:44:27,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:44:27,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:44:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6834525] [2021-03-26 10:44:27,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:44:27,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:44:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:44:27,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:44:27,519 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2021-03-26 10:44:27,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:44:27,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:44:27,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2021-03-26 10:44:27,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:44:27,595 INFO L129 PetriNetUnfolder]: 28/78 cut-off events. [2021-03-26 10:44:27,595 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:44:27,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 78 events. 28/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 249 event pairs, 12 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 135. Up to 45 conditions per place. [2021-03-26 10:44:27,597 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 4 changer transitions 7/30 dead transitions. [2021-03-26 10:44:27,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 101 flow [2021-03-26 10:44:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:44:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:44:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2021-03-26 10:44:27,612 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8170940170940171 [2021-03-26 10:44:27,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2021-03-26 10:44:27,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2021-03-26 10:44:27,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:44:27,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2021-03-26 10:44:27,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 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 10:44:27,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 10:44:27,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 10:44:27,632 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 5 states and 478 transitions. [2021-03-26 10:44:27,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 101 flow [2021-03-26 10:44:27,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 10:44:27,637 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 82 flow [2021-03-26 10:44:27,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-26 10:44:27,640 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-26 10:44:27,640 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:27,640 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 82 flow [2021-03-26 10:44:27,641 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 82 flow [2021-03-26 10:44:27,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 23 transitions, 82 flow [2021-03-26 10:44:27,649 INFO L129 PetriNetUnfolder]: 23/65 cut-off events. [2021-03-26 10:44:27,650 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-26 10:44:27,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 65 events. 23/65 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 198 event pairs, 11 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 146. Up to 38 conditions per place. [2021-03-26 10:44:27,651 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 10:44:28,104 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-26 10:44:28,339 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-26 10:44:28,422 INFO L154 LiptonReduction]: Checked pairs total: 396 [2021-03-26 10:44:28,423 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:44:28,423 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 783 [2021-03-26 10:44:28,424 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 78 flow [2021-03-26 10:44:28,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:44:28,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:44:28,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:44:28,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:44:28,425 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:44:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:44:28,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1262281350, now seen corresponding path program 1 times [2021-03-26 10:44:28,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:44:28,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072178760] [2021-03-26 10:44:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:44:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:44:28,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,485 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:44:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:44:28,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:44:28,492 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 10:44:28,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072178760] [2021-03-26 10:44:28,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:44:28,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:44:28,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410540819] [2021-03-26 10:44:28,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:44:28,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:44:28,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:44:28,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:44:28,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 119 [2021-03-26 10:44:28,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 10:44:28,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:44:28,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 119 [2021-03-26 10:44:28,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:44:28,546 INFO L129 PetriNetUnfolder]: 16/54 cut-off events. [2021-03-26 10:44:28,546 INFO L130 PetriNetUnfolder]: For 39/48 co-relation queries the response was YES. [2021-03-26 10:44:28,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 54 events. 16/54 cut-off events. For 39/48 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 2 based on Foata normal form. 12/65 useless extension candidates. Maximal degree in co-relation 163. Up to 35 conditions per place. [2021-03-26 10:44:28,547 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 7 changer transitions 7/31 dead transitions. [2021-03-26 10:44:28,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 174 flow [2021-03-26 10:44:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 10:44:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 10:44:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 573 transitions. [2021-03-26 10:44:28,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8025210084033614 [2021-03-26 10:44:28,551 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 573 transitions. [2021-03-26 10:44:28,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 573 transitions. [2021-03-26 10:44:28,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:44:28,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 573 transitions. [2021-03-26 10:44:28,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 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 10:44:28,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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 10:44:28,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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 10:44:28,556 INFO L185 Difference]: Start difference. First operand has 30 places, 21 transitions, 78 flow. Second operand 6 states and 573 transitions. [2021-03-26 10:44:28,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 174 flow [2021-03-26 10:44:28,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-26 10:44:28,559 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 128 flow [2021-03-26 10:44:28,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-03-26 10:44:28,559 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-03-26 10:44:28,559 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:28,560 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 24 transitions, 128 flow [2021-03-26 10:44:28,560 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 24 transitions, 128 flow [2021-03-26 10:44:28,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 128 flow [2021-03-26 10:44:28,565 INFO L129 PetriNetUnfolder]: 11/41 cut-off events. [2021-03-26 10:44:28,566 INFO L130 PetriNetUnfolder]: For 55/61 co-relation queries the response was YES. [2021-03-26 10:44:28,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 41 events. 11/41 cut-off events. For 55/61 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 2 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 129. Up to 23 conditions per place. [2021-03-26 10:44:28,567 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 10:44:28,569 INFO L154 LiptonReduction]: Checked pairs total: 163 [2021-03-26 10:44:28,569 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:44:28,569 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 10:44:28,570 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 128 flow [2021-03-26 10:44:28,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 10:44:28,571 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:44:28,571 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:44:28,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:44:28,571 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:44:28,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:44:28,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1941405362, now seen corresponding path program 1 times [2021-03-26 10:44:28,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:44:28,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543229429] [2021-03-26 10:44:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:44:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:44:28,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,646 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:44:28,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:44:28,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:44:28,654 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 10:44:28,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543229429] [2021-03-26 10:44:28,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:44:28,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 10:44:28,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041096410] [2021-03-26 10:44:28,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 10:44:28,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:44:28,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 10:44:28,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 10:44:28,657 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 119 [2021-03-26 10:44:28,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 10:44:28,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:44:28,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 119 [2021-03-26 10:44:28,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:44:28,711 INFO L129 PetriNetUnfolder]: 7/33 cut-off events. [2021-03-26 10:44:28,711 INFO L130 PetriNetUnfolder]: For 74/94 co-relation queries the response was YES. [2021-03-26 10:44:28,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 33 events. 7/33 cut-off events. For 74/94 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 14/46 useless extension candidates. Maximal degree in co-relation 121. Up to 20 conditions per place. [2021-03-26 10:44:28,712 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 10 changer transitions 4/28 dead transitions. [2021-03-26 10:44:28,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 196 flow [2021-03-26 10:44:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:44:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:44:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2021-03-26 10:44:28,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7947178871548619 [2021-03-26 10:44:28,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2021-03-26 10:44:28,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2021-03-26 10:44:28,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:44:28,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2021-03-26 10:44:28,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 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 10:44:28,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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 10:44:28,721 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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 10:44:28,721 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 128 flow. Second operand 7 states and 662 transitions. [2021-03-26 10:44:28,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 196 flow [2021-03-26 10:44:28,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 160 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-26 10:44:28,723 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 130 flow [2021-03-26 10:44:28,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2021-03-26 10:44:28,723 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-26 10:44:28,724 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:28,724 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 24 transitions, 130 flow [2021-03-26 10:44:28,724 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 24 transitions, 130 flow [2021-03-26 10:44:28,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 24 transitions, 130 flow [2021-03-26 10:44:28,728 INFO L129 PetriNetUnfolder]: 5/27 cut-off events. [2021-03-26 10:44:28,728 INFO L130 PetriNetUnfolder]: For 35/38 co-relation queries the response was YES. [2021-03-26 10:44:28,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 27 events. 5/27 cut-off events. For 35/38 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 72. Up to 11 conditions per place. [2021-03-26 10:44:28,729 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-26 10:44:28,862 INFO L154 LiptonReduction]: Checked pairs total: 354 [2021-03-26 10:44:28,862 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:44:28,863 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 139 [2021-03-26 10:44:28,863 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 126 flow [2021-03-26 10:44:28,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 10:44:28,864 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:44:28,864 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:44:28,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:44:28,864 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:44:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:44:28,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1238153187, now seen corresponding path program 1 times [2021-03-26 10:44:28,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:44:28,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445048241] [2021-03-26 10:44:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:44:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:44:28,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:44:28,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:28,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:28,940 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 10:44:28,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445048241] [2021-03-26 10:44:28,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:44:28,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:44:28,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947233089] [2021-03-26 10:44:28,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:44:28,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:44:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:44:28,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:44:28,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 121 [2021-03-26 10:44:28,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 10:44:28,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:44:28,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 121 [2021-03-26 10:44:28,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:44:28,971 INFO L129 PetriNetUnfolder]: 10/39 cut-off events. [2021-03-26 10:44:28,972 INFO L130 PetriNetUnfolder]: For 75/85 co-relation queries the response was YES. [2021-03-26 10:44:28,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 39 events. 10/39 cut-off events. For 75/85 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 0 based on Foata normal form. 6/43 useless extension candidates. Maximal degree in co-relation 121. Up to 20 conditions per place. [2021-03-26 10:44:28,972 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 3 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2021-03-26 10:44:28,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 138 flow [2021-03-26 10:44:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:44:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:44:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2021-03-26 10:44:28,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223140495867769 [2021-03-26 10:44:28,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2021-03-26 10:44:28,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2021-03-26 10:44:28,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:44:28,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2021-03-26 10:44:28,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 10:44:28,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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 10:44:28,981 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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 10:44:28,981 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 126 flow. Second operand 4 states and 398 transitions. [2021-03-26 10:44:28,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 138 flow [2021-03-26 10:44:28,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 100 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-26 10:44:28,983 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 95 flow [2021-03-26 10:44:28,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2021-03-26 10:44:28,984 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-26 10:44:28,984 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:28,984 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 22 transitions, 95 flow [2021-03-26 10:44:28,984 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 22 transitions, 95 flow [2021-03-26 10:44:28,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 22 transitions, 95 flow [2021-03-26 10:44:28,988 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2021-03-26 10:44:28,988 INFO L130 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2021-03-26 10:44:28,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 30 events. 6/30 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 66. Up to 10 conditions per place. [2021-03-26 10:44:28,989 INFO L142 LiptonReduction]: Number of co-enabled transitions 106 [2021-03-26 10:44:29,018 INFO L154 LiptonReduction]: Checked pairs total: 124 [2021-03-26 10:44:29,018 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:44:29,018 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 10:44:29,025 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 93 flow [2021-03-26 10:44:29,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 10:44:29,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:44:29,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:44:29,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:44:29,026 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:44:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:44:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1172534026, now seen corresponding path program 1 times [2021-03-26 10:44:29,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:44:29,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905848047] [2021-03-26 10:44:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:44:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:44:29,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:29,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:44:29,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:29,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:29,095 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:44:29,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:44:29,101 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 10:44:29,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905848047] [2021-03-26 10:44:29,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:44:29,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:44:29,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313754113] [2021-03-26 10:44:29,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:44:29,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:44:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:44:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:44:29,104 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 122 [2021-03-26 10:44:29,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:44:29,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:44:29,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 122 [2021-03-26 10:44:29,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:44:29,133 INFO L129 PetriNetUnfolder]: 19/64 cut-off events. [2021-03-26 10:44:29,133 INFO L130 PetriNetUnfolder]: For 76/93 co-relation queries the response was YES. [2021-03-26 10:44:29,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 64 events. 19/64 cut-off events. For 76/93 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 209 event pairs, 1 based on Foata normal form. 10/71 useless extension candidates. Maximal degree in co-relation 167. Up to 20 conditions per place. [2021-03-26 10:44:29,134 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 5 selfloop transitions, 4 changer transitions 1/25 dead transitions. [2021-03-26 10:44:29,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 129 flow [2021-03-26 10:44:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:44:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:44:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 383 transitions. [2021-03-26 10:44:29,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7848360655737705 [2021-03-26 10:44:29,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 383 transitions. [2021-03-26 10:44:29,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 383 transitions. [2021-03-26 10:44:29,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:44:29,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 383 transitions. [2021-03-26 10:44:29,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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 10:44:29,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 10:44:29,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 10:44:29,140 INFO L185 Difference]: Start difference. First operand has 32 places, 21 transitions, 93 flow. Second operand 4 states and 383 transitions. [2021-03-26 10:44:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 129 flow [2021-03-26 10:44:29,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 124 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-26 10:44:29,142 INFO L241 Difference]: Finished difference. Result has 35 places, 24 transitions, 123 flow [2021-03-26 10:44:29,142 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-03-26 10:44:29,142 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-26 10:44:29,142 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:29,142 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 24 transitions, 123 flow [2021-03-26 10:44:29,143 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 24 transitions, 123 flow [2021-03-26 10:44:29,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 24 transitions, 123 flow [2021-03-26 10:44:29,148 INFO L129 PetriNetUnfolder]: 16/60 cut-off events. [2021-03-26 10:44:29,148 INFO L130 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2021-03-26 10:44:29,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 60 events. 16/60 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 199 event pairs, 0 based on Foata normal form. 4/60 useless extension candidates. Maximal degree in co-relation 164. Up to 22 conditions per place. [2021-03-26 10:44:29,149 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-26 10:44:29,176 INFO L154 LiptonReduction]: Checked pairs total: 40 [2021-03-26 10:44:29,176 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:44:29,176 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 10:44:29,179 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 126 flow [2021-03-26 10:44:29,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:44:29,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:44:29,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:44:29,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 10:44:29,180 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:44:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:44:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash -840856583, now seen corresponding path program 1 times [2021-03-26 10:44:29,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:44:29,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856141236] [2021-03-26 10:44:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:44:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:44:29,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:29,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:44:29,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:29,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:29,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:44:29,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:44:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:44:29,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856141236] [2021-03-26 10:44:29,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:44:29,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:44:29,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446553205] [2021-03-26 10:44:29,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:44:29,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:44:29,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:44:29,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:44:29,251 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 123 [2021-03-26 10:44:29,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 10:44:29,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:44:29,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 123 [2021-03-26 10:44:29,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:44:29,272 INFO L129 PetriNetUnfolder]: 23/85 cut-off events. [2021-03-26 10:44:29,273 INFO L130 PetriNetUnfolder]: For 107/124 co-relation queries the response was YES. [2021-03-26 10:44:29,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 85 events. 23/85 cut-off events. For 107/124 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 377 event pairs, 0 based on Foata normal form. 8/88 useless extension candidates. Maximal degree in co-relation 240. Up to 31 conditions per place. [2021-03-26 10:44:29,273 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-03-26 10:44:29,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 132 flow [2021-03-26 10:44:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:44:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:44:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2021-03-26 10:44:29,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8150406504065041 [2021-03-26 10:44:29,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2021-03-26 10:44:29,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2021-03-26 10:44:29,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:44:29,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2021-03-26 10:44:29,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 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 10:44:29,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 10:44:29,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 10:44:29,279 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 126 flow. Second operand 4 states and 401 transitions. [2021-03-26 10:44:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 132 flow [2021-03-26 10:44:29,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 10:44:29,281 INFO L241 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2021-03-26 10:44:29,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2021-03-26 10:44:29,281 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2021-03-26 10:44:29,281 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:44:29,281 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 0 transitions, 0 flow [2021-03-26 10:44:29,282 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 0 transitions, 0 flow [2021-03-26 10:44:29,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 10:44:29,282 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 10:44:29,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:44:29,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 10:44:29,282 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 10:44:29,282 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:44:29,282 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:44:29,283 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 10:44:29,283 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 10:44:29,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 10:44:29,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 10:44:29,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:44:29 BasicIcfg [2021-03-26 10:44:29,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:44:29,289 INFO L168 Benchmark]: Toolchain (without parser) took 5474.67 ms. Allocated memory was 255.9 MB in the beginning and 396.4 MB in the end (delta: 140.5 MB). Free memory was 234.7 MB in the beginning and 165.4 MB in the end (delta: 69.2 MB). Peak memory consumption was 208.4 MB. Max. memory is 16.0 GB. [2021-03-26 10:44:29,289 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:44:29,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.68 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 234.3 MB in the beginning and 291.0 MB in the end (delta: -56.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 10:44:29,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.23 ms. Allocated memory is still 329.3 MB. Free memory was 291.0 MB in the beginning and 288.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:44:29,290 INFO L168 Benchmark]: Boogie Preprocessor took 34.17 ms. Allocated memory is still 329.3 MB. Free memory was 288.9 MB in the beginning and 288.0 MB in the end (delta: 949.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:44:29,290 INFO L168 Benchmark]: RCFGBuilder took 465.36 ms. Allocated memory is still 329.3 MB. Free memory was 287.5 MB in the beginning and 265.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:44:29,290 INFO L168 Benchmark]: TraceAbstraction took 4284.09 ms. Allocated memory was 329.3 MB in the beginning and 396.4 MB in the end (delta: 67.1 MB). Free memory was 265.3 MB in the beginning and 165.4 MB in the end (delta: 99.9 MB). Peak memory consumption was 168.0 MB. Max. memory is 16.0 GB. [2021-03-26 10:44:29,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 605.68 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 234.3 MB in the beginning and 291.0 MB in the end (delta: -56.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 67.23 ms. Allocated memory is still 329.3 MB. Free memory was 291.0 MB in the beginning and 288.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.17 ms. Allocated memory is still 329.3 MB. Free memory was 288.9 MB in the beginning and 288.0 MB in the end (delta: 949.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 465.36 ms. Allocated memory is still 329.3 MB. Free memory was 287.5 MB in the beginning and 265.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4284.09 ms. Allocated memory was 329.3 MB in the beginning and 396.4 MB in the end (delta: 67.1 MB). Free memory was 265.3 MB in the beginning and 165.4 MB in the end (delta: 99.9 MB). Peak memory consumption was 168.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1889.4ms, 70 PlacesBefore, 30 PlacesAfterwards, 61 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1113 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 716, positive: 675, positive conditional: 675, positive unconditional: 0, negative: 41, negative conditional: 41, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 716, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 716, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 559, positive: 540, positive conditional: 0, positive unconditional: 540, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 559, positive: 536, positive conditional: 0, positive unconditional: 536, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 716, positive: 135, positive conditional: 0, positive unconditional: 135, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 559, unknown conditional: 0, unknown unconditional: 559] , Statistics on independence cache: Total cache size (in pairs): 559, Positive cache size: 540, Positive conditional cache size: 0, Positive unconditional cache size: 540, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 782.0ms, 34 PlacesBefore, 30 PlacesAfterwards, 23 TransitionsBefore, 21 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 396 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 225, positive: 195, positive conditional: 195, positive unconditional: 0, negative: 30, negative conditional: 30, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 225, positive: 195, positive conditional: 15, positive unconditional: 180, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 225, positive: 195, positive conditional: 15, positive unconditional: 180, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 2, positive unconditional: 17, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 225, positive: 176, positive conditional: 13, positive unconditional: 163, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 22, unknown conditional: 2, unknown unconditional: 20] , Statistics on independence cache: Total cache size (in pairs): 581, Positive cache size: 559, Positive conditional cache size: 2, Positive unconditional cache size: 557, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2ms, 36 PlacesBefore, 34 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 163 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 75, positive: 62, positive conditional: 62, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 75, positive: 62, positive conditional: 18, positive unconditional: 44, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 75, positive: 62, positive conditional: 18, positive unconditional: 44, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 75, positive: 58, positive conditional: 16, positive unconditional: 42, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 4, unknown conditional: 2, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 585, Positive cache size: 563, Positive conditional cache size: 4, Positive unconditional cache size: 559, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 138.2ms, 39 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 22 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 354 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 177, positive: 141, positive conditional: 141, positive unconditional: 0, negative: 36, negative conditional: 36, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 177, positive: 141, positive conditional: 81, positive unconditional: 60, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 177, positive: 141, positive conditional: 81, positive unconditional: 60, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 177, positive: 134, positive conditional: 78, positive unconditional: 56, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 9, unknown conditional: 3, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 594, Positive cache size: 570, Positive conditional cache size: 7, Positive unconditional cache size: 563, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.0ms, 34 PlacesBefore, 32 PlacesAfterwards, 22 TransitionsBefore, 21 TransitionsAfterwards, 106 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 124 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 60, positive: 48, positive conditional: 48, 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: 60, positive: 48, positive conditional: 25, positive unconditional: 23, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 60, positive: 48, positive conditional: 25, positive unconditional: 23, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ 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] ], Cache Queries: [ total: 60, positive: 44, positive conditional: 23, positive unconditional: 21, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 6, unknown conditional: 2, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 600, Positive cache size: 574, Positive conditional cache size: 9, Positive unconditional cache size: 565, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.2ms, 35 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 32, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 36, positive: 32, positive conditional: 16, positive unconditional: 16, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 16, positive unconditional: 16, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 36, positive: 28, positive conditional: 13, positive unconditional: 15, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 604, Positive cache size: 578, Positive conditional cache size: 12, Positive unconditional cache size: 566, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 33 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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): 604, Positive cache size: 578, Positive conditional cache size: 12, Positive unconditional cache size: 566, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4183.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 380.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2018.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 15 SDslu, 14 SDs, 0 SdLazy, 103 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 103.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 30, 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: 20.4ms SsaConstructionTime, 192.0ms SatisfiabilityAnalysisTime, 375.1ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...