/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:59:36,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:59:36,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:59:36,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 04:59:36,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 04:59:36,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 04:59:36,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 04:59:36,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 04:59:36,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 04:59:36,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 04:59:36,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 04:59:36,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 04:59:36,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:59:36,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:59:36,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:59:36,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:59:36,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:59:36,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:59:36,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:59:36,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:59:36,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:59:36,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:59:36,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:59:36,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:59:36,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 04:59:36,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:59:36,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:59:36,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:59:36,745 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-RepeatedVariableLbe.epf [2021-03-25 04:59:36,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:59:36,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:59:36,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:59:36,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:59:36,787 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:59:36,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:59:36,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:59:36,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:59:36,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:59:36,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:59:36,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:59:36,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:59:36,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:59:36,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:59:36,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:59:36,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:59:36,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:59:36,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:59:37,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:59:37,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:59:37,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:59:37,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:59:37,114 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:59:37,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-03-25 04:59:37,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4a35d83/b0656288da694d5ca4dc0b26b395555e/FLAG5ab5d3fff [2021-03-25 04:59:37,663 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:59:37,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-03-25 04:59:37,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4a35d83/b0656288da694d5ca4dc0b26b395555e/FLAG5ab5d3fff [2021-03-25 04:59:37,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4a35d83/b0656288da694d5ca4dc0b26b395555e [2021-03-25 04:59:37,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:59:37,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:59:37,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:59:37,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:59:37,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:59:37,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:59:37" (1/1) ... [2021-03-25 04:59:37,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7ab30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:37, skipping insertion in model container [2021-03-25 04:59:37,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:59:37" (1/1) ... [2021-03-25 04:59:37,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:59:37,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:59:37,961 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/safe006_pso.oepc.i[950,963] [2021-03-25 04:59:38,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:59:38,110 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:59:38,121 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/safe006_pso.oepc.i[950,963] [2021-03-25 04:59:38,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:59:38,235 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:59:38,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38 WrapperNode [2021-03-25 04:59:38,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:59:38,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:59:38,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:59:38,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:59:38,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:59:38,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:59:38,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:59:38,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:59:38,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (1/1) ... [2021-03-25 04:59:38,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:59:38,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:59:38,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:59:38,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:59:38,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (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 [2021-03-25 04:59:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:59:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:59:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:59:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:59:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:59:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:59:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:59:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:59:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:59:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:59:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:59:38,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:59:38,407 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 04:59:38,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:59:38,727 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 04:59:38,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:59:38 BoogieIcfgContainer [2021-03-25 04:59:38,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:59:38,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:59:38,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:59:38,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:59:38,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:59:37" (1/3) ... [2021-03-25 04:59:38,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e76c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:59:38, skipping insertion in model container [2021-03-25 04:59:38,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:38" (2/3) ... [2021-03-25 04:59:38,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e76c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:59:38, skipping insertion in model container [2021-03-25 04:59:38,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:59:38" (3/3) ... [2021-03-25 04:59:38,735 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2021-03-25 04:59:38,740 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:59:38,744 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 04:59:38,745 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:59:38,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:38,780 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:59:38,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 04:59:38,815 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:59:38,815 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:59:38,815 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:59:38,815 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:59:38,815 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:59:38,815 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:59:38,815 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:59:38,815 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:59:38,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-25 04:59:38,853 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-25 04:59:38,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:38,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-25 04:59:38,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-25 04:59:38,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-25 04:59:38,860 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:38,867 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-25 04:59:38,870 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-25 04:59:38,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-03-25 04:59:38,883 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-25 04:59:38,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:38,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-25 04:59:38,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-25 04:59:40,037 INFO L154 LiptonReduction]: Checked pairs total: 608 [2021-03-25 04:59:40,037 INFO L156 LiptonReduction]: Total number of compositions: 34 [2021-03-25 04:59:40,039 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1180 [2021-03-25 04:59:40,051 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 04:59:40,051 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:40,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:40,052 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:40,052 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1656014901, now seen corresponding path program 1 times [2021-03-25 04:59:40,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:40,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848385062] [2021-03-25 04:59:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:40,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:40,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:40,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:40,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:59:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848385062] [2021-03-25 04:59:40,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:40,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:59:40,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712777806] [2021-03-25 04:59:40,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:59:40,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:40,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:59:40,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:59:40,304 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 95 [2021-03-25 04:59:40,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2021-03-25 04:59:40,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:40,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 95 [2021-03-25 04:59:40,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:40,321 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 04:59:40,321 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:40,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:59:40,322 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 1 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2021-03-25 04:59:40,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 15 transitions, 42 flow [2021-03-25 04:59:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:59:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:59:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-03-25 04:59:40,336 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-03-25 04:59:40,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-03-25 04:59:40,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-03-25 04:59:40,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:40,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-03-25 04:59:40,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-03-25 04:59:40,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-03-25 04:59:40,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-03-25 04:59:40,350 INFO L185 Difference]: Start difference. First operand has 22 places, 15 transitions, 36 flow. Second operand 3 states and 247 transitions. [2021-03-25 04:59:40,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 15 transitions, 42 flow [2021-03-25 04:59:40,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:40,353 INFO L241 Difference]: Finished difference. Result has 23 places, 15 transitions, 42 flow [2021-03-25 04:59:40,355 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2021-03-25 04:59:40,356 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2021-03-25 04:59:40,356 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:40,356 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 15 transitions, 42 flow [2021-03-25 04:59:40,356 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 15 transitions, 42 flow [2021-03-25 04:59:40,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 15 transitions, 42 flow [2021-03-25 04:59:40,359 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 04:59:40,359 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 04:59:40,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 15 events. 0/15 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:59:40,360 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 04:59:40,753 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-25 04:59:41,021 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-25 04:59:41,089 INFO L154 LiptonReduction]: Checked pairs total: 154 [2021-03-25 04:59:41,090 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:59:41,090 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 734 [2021-03-25 04:59:41,091 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2021-03-25 04:59:41,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2021-03-25 04:59:41,091 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:41,091 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:41,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:59:41,091 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash 203145301, now seen corresponding path program 1 times [2021-03-25 04:59:41,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:41,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162536529] [2021-03-25 04:59:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:41,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:41,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:41,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:41,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:41,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:41,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:59:41,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162536529] [2021-03-25 04:59:41,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:41,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:41,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048512912] [2021-03-25 04:59:41,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:41,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:41,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:41,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:41,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 98 [2021-03-25 04:59:41,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2021-03-25 04:59:41,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:41,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 98 [2021-03-25 04:59:41,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:41,167 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 04:59:41,167 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 04:59:41,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 04:59:41,167 INFO L132 encePairwiseOnDemand]: 94/98 looper letters, 1 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2021-03-25 04:59:41,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 51 flow [2021-03-25 04:59:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2021-03-25 04:59:41,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8137755102040817 [2021-03-25 04:59:41,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2021-03-25 04:59:41,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2021-03-25 04:59:41,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:41,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2021-03-25 04:59:41,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2021-03-25 04:59:41,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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) [2021-03-25 04:59:41,174 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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) [2021-03-25 04:59:41,174 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 319 transitions. [2021-03-25 04:59:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 51 flow [2021-03-25 04:59:41,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:41,175 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2021-03-25 04:59:41,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2021-03-25 04:59:41,176 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2021-03-25 04:59:41,176 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:41,176 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 12 transitions, 46 flow [2021-03-25 04:59:41,177 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 12 transitions, 46 flow [2021-03-25 04:59:41,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 12 transitions, 46 flow [2021-03-25 04:59:41,179 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 04:59:41,179 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 04:59:41,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:59:41,180 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 04:59:41,242 INFO L154 LiptonReduction]: Checked pairs total: 26 [2021-03-25 04:59:41,243 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 04:59:41,243 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-25 04:59:41,244 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 42 flow [2021-03-25 04:59:41,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2021-03-25 04:59:41,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:41,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:41,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:59:41,245 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:41,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1386547245, now seen corresponding path program 1 times [2021-03-25 04:59:41,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:41,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492005776] [2021-03-25 04:59:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:41,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:41,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:41,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:41,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:41,296 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-25 04:59:41,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:59:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:59:41,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492005776] [2021-03-25 04:59:41,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:41,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:41,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984243037] [2021-03-25 04:59:41,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:59:41,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:41,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:59:41,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:59:41,307 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 100 [2021-03-25 04:59:41,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2021-03-25 04:59:41,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:41,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 100 [2021-03-25 04:59:41,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:41,320 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-25 04:59:41,321 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 04:59:41,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 9 events. 0/9 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 04:59:41,321 INFO L132 encePairwiseOnDemand]: 97/100 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-25 04:59:41,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 9 transitions, 40 flow [2021-03-25 04:59:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2021-03-25 04:59:41,323 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-25 04:59:41,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 300 transitions. [2021-03-25 04:59:41,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 300 transitions. [2021-03-25 04:59:41,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:41,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 300 transitions. [2021-03-25 04:59:41,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2021-03-25 04:59:41,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-25 04:59:41,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-25 04:59:41,327 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 42 flow. Second operand 4 states and 300 transitions. [2021-03-25 04:59:41,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 9 transitions, 40 flow [2021-03-25 04:59:41,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 9 transitions, 28 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 04:59:41,328 INFO L241 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2021-03-25 04:59:41,328 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2021-03-25 04:59:41,328 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, -5 predicate places. [2021-03-25 04:59:41,329 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:41,329 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 0 transitions, 0 flow [2021-03-25 04:59:41,329 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 0 transitions, 0 flow [2021-03-25 04:59:41,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 04:59:41,329 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 04:59:41,329 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:41,330 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. [2021-03-25 04:59:41,330 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 04:59:41,330 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 04:59:41,330 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:41,330 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 04:59:41,331 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 04:59:41,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2021-03-25 04:59:41,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:59:41,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:59:41 BasicIcfg [2021-03-25 04:59:41,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:59:41,335 INFO L168 Benchmark]: Toolchain (without parser) took 3634.31 ms. Allocated memory was 335.5 MB in the beginning and 419.4 MB in the end (delta: 83.9 MB). Free memory was 298.9 MB in the beginning and 382.8 MB in the end (delta: -84.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:41,336 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 335.5 MB. Free memory was 316.9 MB in the beginning and 316.8 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:59:41,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.72 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 297.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:41,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 335.5 MB. Free memory was 297.3 MB in the beginning and 295.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:41,337 INFO L168 Benchmark]: Boogie Preprocessor took 29.70 ms. Allocated memory is still 335.5 MB. Free memory was 295.2 MB in the beginning and 294.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:41,338 INFO L168 Benchmark]: RCFGBuilder took 403.31 ms. Allocated memory is still 335.5 MB. Free memory was 294.2 MB in the beginning and 272.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:41,338 INFO L168 Benchmark]: TraceAbstraction took 2604.63 ms. Allocated memory was 335.5 MB in the beginning and 419.4 MB in the end (delta: 83.9 MB). Free memory was 272.1 MB in the beginning and 382.8 MB in the end (delta: -110.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:59:41,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 335.5 MB. Free memory was 316.9 MB in the beginning and 316.8 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 533.72 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 297.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 335.5 MB. Free memory was 297.3 MB in the beginning and 295.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.70 ms. Allocated memory is still 335.5 MB. Free memory was 295.2 MB in the beginning and 294.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 403.31 ms. Allocated memory is still 335.5 MB. Free memory was 294.2 MB in the beginning and 272.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2604.63 ms. Allocated memory was 335.5 MB in the beginning and 419.4 MB in the end (delta: 83.9 MB). Free memory was 272.1 MB in the beginning and 382.8 MB in the end (delta: -110.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1167.6ms, 55 PlacesBefore, 22 PlacesAfterwards, 49 TransitionsBefore, 15 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 34 TotalNumberOfCompositions, 608 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 422, positive: 390, positive conditional: 0, positive unconditional: 390, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 229, positive: 216, positive conditional: 0, positive unconditional: 216, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 229, positive: 216, positive conditional: 0, positive unconditional: 216, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 422, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 229, unknown conditional: 0, unknown unconditional: 229] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 733.5ms, 23 PlacesBefore, 20 PlacesAfterwards, 15 TransitionsBefore, 12 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 154 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 71, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 71, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 66.2ms, 23 PlacesBefore, 21 PlacesAfterwards, 12 TransitionsBefore, 10 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 26 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 11, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 17 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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): 4, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2521.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 109.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1229.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 9 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=2, InterpolantAutomatonStates: 11, 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: 11.1ms SsaConstructionTime, 85.1ms SatisfiabilityAnalysisTime, 147.1ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...