/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:01:20,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:01:20,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:01:20,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:01:20,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:01:20,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:01:20,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:01:20,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:01:20,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:01:20,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:01:20,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:01:20,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:01:20,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:01:20,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:01:20,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:01:20,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:01:20,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:01:20,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:01:20,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:01:20,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:01:20,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:01:20,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:01:20,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:01:20,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:01:20,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:01:20,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:01:20,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:01:20,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:01:20,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 11:01:20,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:01:20,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:01:20,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:01:20,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:01:20,843 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:01:20,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:01:20,843 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:01:20,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:01:20,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:01:20,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:01:20,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:01:20,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:01:20,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:01:20,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:01:20,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:01:20,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:01:20,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:01:20,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:01:20,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:01:20,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:01:20,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:01:20,846 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:01:20,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:01:20,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:01:21,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:01:21,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:01:21,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:01:21,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:01:21,171 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:01:21,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i [2021-03-24 11:01:21,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/061c5a3ba/6a7d4bc7bcd746169b7feb571c6a1c23/FLAGd1d78f7b2 [2021-03-24 11:01:21,760 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:01:21,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i [2021-03-24 11:01:21,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/061c5a3ba/6a7d4bc7bcd746169b7feb571c6a1c23/FLAGd1d78f7b2 [2021-03-24 11:01:22,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/061c5a3ba/6a7d4bc7bcd746169b7feb571c6a1c23 [2021-03-24 11:01:22,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:01:22,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:01:22,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:01:22,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:01:22,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:01:22,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5771ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22, skipping insertion in model container [2021-03-24 11:01:22,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:01:22,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:01:22,298 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/safe007_pso.oepc.i[950,963] [2021-03-24 11:01:22,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:01:22,412 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:01:22,424 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/safe007_pso.oepc.i[950,963] [2021-03-24 11:01:22,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:01:22,517 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:01:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22 WrapperNode [2021-03-24 11:01:22,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:01:22,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:01:22,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:01:22,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:01:22,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:01:22,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:01:22,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:01:22,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:01:22,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... [2021-03-24 11:01:22,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:01:22,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:01:22,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:01:22,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:01:22,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:01:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:01:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:01:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:01:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:01:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:01:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:01:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:01:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:01:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:01:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:01:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:01:22,666 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:01:23,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:01:23,006 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:01:23,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:01:23 BoogieIcfgContainer [2021-03-24 11:01:23,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:01:23,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:01:23,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:01:23,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:01:23,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:01:22" (1/3) ... [2021-03-24 11:01:23,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c829d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:01:23, skipping insertion in model container [2021-03-24 11:01:23,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:01:22" (2/3) ... [2021-03-24 11:01:23,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c829d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:01:23, skipping insertion in model container [2021-03-24 11:01:23,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:01:23" (3/3) ... [2021-03-24 11:01:23,013 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_pso.oepc.i [2021-03-24 11:01:23,018 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:01:23,021 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:01:23,022 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:01:23,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,046 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,046 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,051 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,051 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,066 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,066 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,066 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:01:23,070 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:01:23,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:01:23,116 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:01:23,116 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:01:23,117 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:01:23,117 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:01:23,117 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:01:23,117 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:01:23,117 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:01:23,117 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:01:23,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-24 11:01:23,179 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-24 11:01:23,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:23,184 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 54 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. [2021-03-24 11:01:23,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-24 11:01:23,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-24 11:01:23,194 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:01:23,206 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-24 11:01:23,209 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-24 11:01:23,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-24 11:01:23,239 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-24 11:01:23,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:23,240 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 45 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. [2021-03-24 11:01:23,243 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 11:01:24,793 INFO L154 LiptonReduction]: Checked pairs total: 942 [2021-03-24 11:01:24,793 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-24 11:01:24,795 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1602 [2021-03-24 11:01:24,807 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 11:01:24,807 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:24,807 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:24,808 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:24,808 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1196691833, now seen corresponding path program 1 times [2021-03-24 11:01:24,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:24,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64266683] [2021-03-24 11:01:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:25,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:01:25,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64266683] [2021-03-24 11:01:25,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:25,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 11:01:25,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383467691] [2021-03-24 11:01:25,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:01:25,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:25,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:01:25,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:01:25,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 116 [2021-03-24 11:01:25,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:25,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 116 [2021-03-24 11:01:25,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:25,109 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 11:01:25,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:01:25,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 11:01:25,113 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 1 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2021-03-24 11:01:25,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 57 flow [2021-03-24 11:01:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:01:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:01:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-24 11:01:25,125 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-24 11:01:25,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-24 11:01:25,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-24 11:01:25,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:25,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-24 11:01:25,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 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) [2021-03-24 11:01:25,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 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) [2021-03-24 11:01:25,138 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 310 transitions. [2021-03-24 11:01:25,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 57 flow [2021-03-24 11:01:25,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 54 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:01:25,142 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 56 flow [2021-03-24 11:01:25,143 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2021-03-24 11:01:25,144 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-24 11:01:25,144 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 56 flow [2021-03-24 11:01:25,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,145 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:25,145 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:25,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:01:25,145 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:25,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1552337805, now seen corresponding path program 1 times [2021-03-24 11:01:25,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:25,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816272557] [2021-03-24 11:01:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:25,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:01:25,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816272557] [2021-03-24 11:01:25,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:25,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 11:01:25,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938368644] [2021-03-24 11:01:25,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:01:25,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:01:25,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:01:25,264 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 116 [2021-03-24 11:01:25,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:25,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 116 [2021-03-24 11:01:25,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:25,277 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 11:01:25,277 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 11:01:25,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 21 events. 0/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 11:01:25,278 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 1 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2021-03-24 11:01:25,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 62 flow [2021-03-24 11:01:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:01:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:01:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-24 11:01:25,280 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-24 11:01:25,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-24 11:01:25,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-24 11:01:25,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:25,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-24 11:01:25,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 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) [2021-03-24 11:01:25,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 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) [2021-03-24 11:01:25,284 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 56 flow. Second operand 3 states and 310 transitions. [2021-03-24 11:01:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 62 flow [2021-03-24 11:01:25,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:01:25,285 INFO L241 Difference]: Finished difference. Result has 32 places, 21 transitions, 60 flow [2021-03-24 11:01:25,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2021-03-24 11:01:25,286 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-24 11:01:25,286 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 60 flow [2021-03-24 11:01:25,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,287 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:25,287 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:25,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:01:25,287 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1030400707, now seen corresponding path program 1 times [2021-03-24 11:01:25,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:25,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240615017] [2021-03-24 11:01:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:25,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:25,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:01:25,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240615017] [2021-03-24 11:01:25,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:25,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:01:25,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495606364] [2021-03-24 11:01:25,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:01:25,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:25,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:01:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:01:25,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 116 [2021-03-24 11:01:25,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:25,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 116 [2021-03-24 11:01:25,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:25,355 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-24 11:01:25,355 INFO L130 PetriNetUnfolder]: For 9/16 co-relation queries the response was YES. [2021-03-24 11:01:25,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 26 events. 0/26 cut-off events. For 9/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 11:01:25,356 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 1 selfloop transitions, 4 changer transitions 1/22 dead transitions. [2021-03-24 11:01:25,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 22 transitions, 75 flow [2021-03-24 11:01:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:01:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:01:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2021-03-24 11:01:25,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.853448275862069 [2021-03-24 11:01:25,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2021-03-24 11:01:25,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2021-03-24 11:01:25,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:25,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2021-03-24 11:01:25,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2021-03-24 11:01:25,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,362 INFO L185 Difference]: Start difference. First operand has 32 places, 21 transitions, 60 flow. Second operand 4 states and 396 transitions. [2021-03-24 11:01:25,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 22 transitions, 75 flow [2021-03-24 11:01:25,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 71 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:01:25,364 INFO L241 Difference]: Finished difference. Result has 35 places, 21 transitions, 74 flow [2021-03-24 11:01:25,364 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=21} [2021-03-24 11:01:25,364 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-24 11:01:25,364 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 21 transitions, 74 flow [2021-03-24 11:01:25,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,365 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:25,365 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:25,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:01:25,365 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash 245703637, now seen corresponding path program 1 times [2021-03-24 11:01:25,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:25,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98518983] [2021-03-24 11:01:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:25,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:25,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,433 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:25,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:01:25,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98518983] [2021-03-24 11:01:25,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:25,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:01:25,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880358123] [2021-03-24 11:01:25,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:01:25,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:01:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:01:25,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2021-03-24 11:01:25,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 21 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:25,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2021-03-24 11:01:25,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:25,513 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2021-03-24 11:01:25,513 INFO L130 PetriNetUnfolder]: For 40/52 co-relation queries the response was YES. [2021-03-24 11:01:25,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 40 events. 3/40 cut-off events. For 40/52 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 80. Up to 7 conditions per place. [2021-03-24 11:01:25,514 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 5 selfloop transitions, 6 changer transitions 1/26 dead transitions. [2021-03-24 11:01:25,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 122 flow [2021-03-24 11:01:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:01:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:01:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2021-03-24 11:01:25,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-03-24 11:01:25,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2021-03-24 11:01:25,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2021-03-24 11:01:25,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:25,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2021-03-24 11:01:25,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2021-03-24 11:01:25,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,523 INFO L185 Difference]: Start difference. First operand has 35 places, 21 transitions, 74 flow. Second operand 5 states and 464 transitions. [2021-03-24 11:01:25,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 122 flow [2021-03-24 11:01:25,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 102 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 11:01:25,525 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 97 flow [2021-03-24 11:01:25,525 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2021-03-24 11:01:25,525 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-24 11:01:25,526 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 97 flow [2021-03-24 11:01:25,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,526 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:25,526 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:25,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:01:25,526 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:25,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1918328357, now seen corresponding path program 2 times [2021-03-24 11:01:25,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:25,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305090899] [2021-03-24 11:01:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:25,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:25,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,582 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:01:25,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:01:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:01:25,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305090899] [2021-03-24 11:01:25,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:25,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:01:25,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243116649] [2021-03-24 11:01:25,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:01:25,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:01:25,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:01:25,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2021-03-24 11:01:25,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:25,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2021-03-24 11:01:25,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:25,624 INFO L129 PetriNetUnfolder]: 1/37 cut-off events. [2021-03-24 11:01:25,625 INFO L130 PetriNetUnfolder]: For 47/73 co-relation queries the response was YES. [2021-03-24 11:01:25,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 37 events. 1/37 cut-off events. For 47/73 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 3/39 useless extension candidates. Maximal degree in co-relation 80. Up to 9 conditions per place. [2021-03-24 11:01:25,626 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 3 selfloop transitions, 4 changer transitions 3/24 dead transitions. [2021-03-24 11:01:25,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 24 transitions, 122 flow [2021-03-24 11:01:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:01:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:01:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2021-03-24 11:01:25,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7974137931034483 [2021-03-24 11:01:25,627 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2021-03-24 11:01:25,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2021-03-24 11:01:25,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:25,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2021-03-24 11:01:25,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,630 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,631 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 97 flow. Second operand 4 states and 370 transitions. [2021-03-24 11:01:25,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 24 transitions, 122 flow [2021-03-24 11:01:25,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 24 transitions, 114 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 11:01:25,633 INFO L241 Difference]: Finished difference. Result has 40 places, 21 transitions, 92 flow [2021-03-24 11:01:25,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2021-03-24 11:01:25,633 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 11:01:25,634 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 21 transitions, 92 flow [2021-03-24 11:01:25,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:01:25,634 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:01:25,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:01:25,634 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:01:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:01:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1506422313, now seen corresponding path program 1 times [2021-03-24 11:01:25,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:01:25,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762482038] [2021-03-24 11:01:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:01:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:01:25,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:01:25,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:01:25,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:01:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:01:25,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762482038] [2021-03-24 11:01:25,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:01:25,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:01:25,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562707427] [2021-03-24 11:01:25,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:01:25,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:01:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:01:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:01:25,704 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 116 [2021-03-24 11:01:25,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:01:25,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 116 [2021-03-24 11:01:25,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:01:25,719 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 11:01:25,720 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-24 11:01:25,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 20 events. 0/20 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 11:01:25,720 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-03-24 11:01:25,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 88 flow [2021-03-24 11:01:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:01:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:01:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2021-03-24 11:01:25,722 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8491379310344828 [2021-03-24 11:01:25,722 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2021-03-24 11:01:25,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2021-03-24 11:01:25,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:01:25,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2021-03-24 11:01:25,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,725 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,725 INFO L185 Difference]: Start difference. First operand has 40 places, 21 transitions, 92 flow. Second operand 4 states and 394 transitions. [2021-03-24 11:01:25,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 88 flow [2021-03-24 11:01:25,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 62 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-03-24 11:01:25,728 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2021-03-24 11:01:25,728 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2021-03-24 11:01:25,728 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-24 11:01:25,728 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2021-03-24 11:01:25,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:01:25,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:01:25,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:01:25 BasicIcfg [2021-03-24 11:01:25,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:01:25,737 INFO L168 Benchmark]: Toolchain (without parser) took 3653.63 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 233.5 MB in the beginning and 370.3 MB in the end (delta: -136.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:25,737 INFO L168 Benchmark]: CDTParser took 0.85 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. [2021-03-24 11:01:25,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.79 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 233.5 MB in the beginning and 306.4 MB in the end (delta: -72.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:25,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.08 ms. Allocated memory is still 343.9 MB. Free memory was 306.4 MB in the beginning and 304.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:25,739 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 ms. Allocated memory is still 343.9 MB. Free memory was 304.4 MB in the beginning and 302.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:25,741 INFO L168 Benchmark]: RCFGBuilder took 413.37 ms. Allocated memory is still 343.9 MB. Free memory was 302.8 MB in the beginning and 320.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:25,741 INFO L168 Benchmark]: TraceAbstraction took 2722.90 ms. Allocated memory was 343.9 MB in the beginning and 425.7 MB in the end (delta: 81.8 MB). Free memory was 320.3 MB in the beginning and 370.3 MB in the end (delta: -50.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:01:25,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 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 436.79 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 233.5 MB in the beginning and 306.4 MB in the end (delta: -72.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.08 ms. Allocated memory is still 343.9 MB. Free memory was 306.4 MB in the beginning and 304.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 343.9 MB. Free memory was 304.4 MB in the beginning and 302.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 413.37 ms. Allocated memory is still 343.9 MB. Free memory was 302.8 MB in the beginning and 320.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2722.90 ms. Allocated memory was 343.9 MB in the beginning and 425.7 MB in the end (delta: 81.8 MB). Free memory was 320.3 MB in the beginning and 370.3 MB in the end (delta: -50.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1584.3ms, 70 PlacesBefore, 31 PlacesAfterwards, 61 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 942 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 600, positive: 566, positive conditional: 0, positive unconditional: 566, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 399, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 399, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 600, positive: 179, positive conditional: 0, positive unconditional: 179, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 399, unknown conditional: 0, unknown unconditional: 399] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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: 7.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2617.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 276.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1682.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 14 SDslu, 8 SDs, 0 SdLazy, 26 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 126.9ms SatisfiabilityAnalysisTime, 348.3ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 258 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...