/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:07:08,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:07:08,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:07:08,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:07:08,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:07:08,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:07:08,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:07:08,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:07:08,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:07:08,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:07:08,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:07:08,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:07:08,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:07:08,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:07:08,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:07:08,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:07:08,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:07:08,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:07:08,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:07:08,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:07:08,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:07:08,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:07:08,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:07:08,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:07:08,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:07:08,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:07:08,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:07:08,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:07:08,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:07:08,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:07:08,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:07:08,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:07:08,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:07:08,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:07:08,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:07:08,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:07:08,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:07:08,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:07:08,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:07:08,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:07:08,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:07:08,705 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:07:08,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:07:08,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:07:08,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:07:08,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:07:08,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:07:08,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:07:08,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:07:08,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:07:08,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:07:08,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:07:08,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:07:08,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:07:08,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:07:08,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:07:08,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:07:08,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:07:08,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:07:08,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:07:08,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:07:08,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:07:08,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:07:08,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:07:08,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:07:08,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:07:08,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:07:09,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:07:09,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:07:09,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:07:09,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:07:09,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:07:09,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-10-11 15:07:09,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b11ea20/c46d932160e94e5c836509f65ec7d1a8/FLAG2cf5285ae [2020-10-11 15:07:09,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:07:09,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-10-11 15:07:09,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b11ea20/c46d932160e94e5c836509f65ec7d1a8/FLAG2cf5285ae [2020-10-11 15:07:09,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b11ea20/c46d932160e94e5c836509f65ec7d1a8 [2020-10-11 15:07:09,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:07:09,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:07:09,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:07:09,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:07:09,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:07:09,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:07:09" (1/1) ... [2020-10-11 15:07:09,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc45f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:09, skipping insertion in model container [2020-10-11 15:07:09,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:07:09" (1/1) ... [2020-10-11 15:07:09,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:07:10,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:07:10,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:07:10,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:07:10,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:07:10,655 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:07:10,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10 WrapperNode [2020-10-11 15:07:10,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:07:10,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:07:10,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:07:10,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:07:10,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:07:10,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:07:10,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:07:10,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:07:10,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (1/1) ... [2020-10-11 15:07:10,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:07:10,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:07:10,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:07:10,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:07:10,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (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 [2020-10-11 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:07:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:07:10,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:07:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:07:10,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:07:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:07:10,798 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:07:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:07:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:07:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:07:10,804 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:07:11,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:07:11,158 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:07:11,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:07:11 BoogieIcfgContainer [2020-10-11 15:07:11,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:07:11,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:07:11,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:07:11,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:07:11,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:07:09" (1/3) ... [2020-10-11 15:07:11,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1091f359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:07:11, skipping insertion in model container [2020-10-11 15:07:11,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:07:10" (2/3) ... [2020-10-11 15:07:11,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1091f359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:07:11, skipping insertion in model container [2020-10-11 15:07:11,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:07:11" (3/3) ... [2020-10-11 15:07:11,169 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-10-11 15:07:11,179 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:07:11,180 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:07:11,186 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:07:11,187 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:07:11,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,217 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,217 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,217 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,218 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,231 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,232 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:07:11,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:07:11,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:07:11,287 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:07:11,287 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:07:11,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:07:11,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:07:11,288 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:07:11,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:07:11,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:07:11,302 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:07:11,304 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-11 15:07:11,307 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-11 15:07:11,309 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-11 15:07:11,351 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-11 15:07:11,351 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:07:11,356 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 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. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-11 15:07:11,359 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-11 15:07:12,887 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-11 15:07:12,887 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-11 15:07:12,894 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-11 15:07:12,920 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-11 15:07:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-11 15:07:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:07:12,931 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:12,932 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:12,932 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-11 15:07:12,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:12,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715860111] [2020-10-11 15:07:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:13,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715860111] [2020-10-11 15:07:13,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:13,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:07:13,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370156547] [2020-10-11 15:07:13,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 15:07:13,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 15:07:13,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 15:07:13,151 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-11 15:07:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:13,179 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-11 15:07:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 15:07:13,181 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-11 15:07:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:13,197 INFO L225 Difference]: With dead ends: 274 [2020-10-11 15:07:13,197 INFO L226 Difference]: Without dead ends: 226 [2020-10-11 15:07:13,199 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 15:07:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-11 15:07:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-11 15:07:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-11 15:07:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-11 15:07:13,270 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-11 15:07:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:13,272 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-11 15:07:13,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 15:07:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-11 15:07:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:07:13,274 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:13,274 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:13,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:07:13,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-11 15:07:13,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:13,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758558501] [2020-10-11 15:07:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:13,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758558501] [2020-10-11 15:07:13,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:13,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:07:13,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969280230] [2020-10-11 15:07:13,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:07:13,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:13,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:07:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:07:13,419 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 5 states. [2020-10-11 15:07:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:13,513 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-11 15:07:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:07:13,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 15:07:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:13,517 INFO L225 Difference]: With dead ends: 250 [2020-10-11 15:07:13,517 INFO L226 Difference]: Without dead ends: 202 [2020-10-11 15:07:13,518 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:07:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-11 15:07:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-11 15:07:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-11 15:07:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-11 15:07:13,545 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-11 15:07:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:13,545 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-11 15:07:13,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:07:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-11 15:07:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:07:13,547 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:13,547 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:13,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:07:13,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:13,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-10-11 15:07:13,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:13,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005172685] [2020-10-11 15:07:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:13,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005172685] [2020-10-11 15:07:13,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:13,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:07:13,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822280691] [2020-10-11 15:07:13,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:07:13,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:13,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:07:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:07:13,659 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 6 states. [2020-10-11 15:07:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:13,810 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-10-11 15:07:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 15:07:13,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 15:07:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:13,814 INFO L225 Difference]: With dead ends: 262 [2020-10-11 15:07:13,815 INFO L226 Difference]: Without dead ends: 154 [2020-10-11 15:07:13,815 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-11 15:07:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-11 15:07:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-11 15:07:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-11 15:07:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-10-11 15:07:13,828 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-10-11 15:07:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:13,828 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-10-11 15:07:13,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:07:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-10-11 15:07:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:07:13,830 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:13,830 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:13,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:07:13,831 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:13,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-10-11 15:07:13,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:13,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171727691] [2020-10-11 15:07:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:13,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171727691] [2020-10-11 15:07:13,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:13,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:07:13,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412201239] [2020-10-11 15:07:13,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:07:13,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:07:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:07:13,891 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-10-11 15:07:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:13,911 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-10-11 15:07:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:07:13,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:07:13,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:13,913 INFO L225 Difference]: With dead ends: 174 [2020-10-11 15:07:13,914 INFO L226 Difference]: Without dead ends: 150 [2020-10-11 15:07:13,914 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:07:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-11 15:07:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-11 15:07:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-11 15:07:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-11 15:07:13,924 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-11 15:07:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:13,924 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-11 15:07:13,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:07:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-11 15:07:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:07:13,926 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:13,926 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:13,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:07:13,927 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:13,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:13,927 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-11 15:07:13,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:13,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536910375] [2020-10-11 15:07:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:14,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536910375] [2020-10-11 15:07:14,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:14,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:07:14,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651674063] [2020-10-11 15:07:14,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:07:14,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:07:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:07:14,016 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-11 15:07:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:14,048 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-10-11 15:07:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:07:14,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 15:07:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:14,050 INFO L225 Difference]: With dead ends: 164 [2020-10-11 15:07:14,050 INFO L226 Difference]: Without dead ends: 128 [2020-10-11 15:07:14,051 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:07:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-11 15:07:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-11 15:07:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-11 15:07:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-10-11 15:07:14,058 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-10-11 15:07:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:14,058 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-10-11 15:07:14,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:07:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-10-11 15:07:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:07:14,060 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:14,060 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:14,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:07:14,060 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:14,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-10-11 15:07:14,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:14,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579719211] [2020-10-11 15:07:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:14,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579719211] [2020-10-11 15:07:14,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:14,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:07:14,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040902243] [2020-10-11 15:07:14,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:07:14,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:14,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:07:14,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:07:14,116 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-10-11 15:07:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:14,156 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-10-11 15:07:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:07:14,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:07:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:14,158 INFO L225 Difference]: With dead ends: 116 [2020-10-11 15:07:14,158 INFO L226 Difference]: Without dead ends: 92 [2020-10-11 15:07:14,158 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:07:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-11 15:07:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-11 15:07:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-11 15:07:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-11 15:07:14,163 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-10-11 15:07:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:14,163 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-11 15:07:14,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:07:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-11 15:07:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:07:14,164 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:14,164 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:14,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:07:14,165 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:14,165 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-11 15:07:14,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:14,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818888577] [2020-10-11 15:07:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:14,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818888577] [2020-10-11 15:07:14,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:14,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:07:14,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300159792] [2020-10-11 15:07:14,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:07:14,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:14,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:07:14,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:07:14,211 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-11 15:07:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:14,229 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-11 15:07:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:07:14,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:07:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:14,231 INFO L225 Difference]: With dead ends: 120 [2020-10-11 15:07:14,231 INFO L226 Difference]: Without dead ends: 94 [2020-10-11 15:07:14,231 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:07:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-11 15:07:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-11 15:07:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-11 15:07:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-11 15:07:14,236 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-11 15:07:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:14,236 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-11 15:07:14,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:07:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-11 15:07:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:07:14,237 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:14,237 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:14,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:07:14,238 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-11 15:07:14,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:14,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872577181] [2020-10-11 15:07:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:14,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872577181] [2020-10-11 15:07:14,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:14,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:07:14,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444062767] [2020-10-11 15:07:14,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:07:14,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:14,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:07:14,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:07:14,291 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-10-11 15:07:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:14,320 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-10-11 15:07:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:07:14,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-11 15:07:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:14,321 INFO L225 Difference]: With dead ends: 113 [2020-10-11 15:07:14,322 INFO L226 Difference]: Without dead ends: 70 [2020-10-11 15:07:14,322 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:07:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-11 15:07:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-11 15:07:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-11 15:07:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-10-11 15:07:14,325 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-10-11 15:07:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:14,326 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-10-11 15:07:14,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:07:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-10-11 15:07:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:07:14,327 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:07:14,327 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:07:14,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:07:14,327 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:07:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:07:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-11 15:07:14,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:07:14,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286175619] [2020-10-11 15:07:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:07:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:07:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:07:14,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286175619] [2020-10-11 15:07:14,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:07:14,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:07:14,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487397622] [2020-10-11 15:07:14,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:07:14,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:07:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:07:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:07:14,385 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-10-11 15:07:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:07:14,413 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-11 15:07:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:07:14,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-11 15:07:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:07:14,413 INFO L225 Difference]: With dead ends: 58 [2020-10-11 15:07:14,414 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:07:14,414 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:07:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:07:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:07:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:07:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:07:14,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-11 15:07:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:07:14,416 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:07:14,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:07:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:07:14,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:07:14,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:07:14,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:07:14 BasicIcfg [2020-10-11 15:07:14,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:07:14,423 INFO L168 Benchmark]: Toolchain (without parser) took 4456.27 ms. Allocated memory was 254.3 MB in the beginning and 371.2 MB in the end (delta: 116.9 MB). Free memory was 209.4 MB in the beginning and 240.5 MB in the end (delta: -31.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 14.2 GB. [2020-10-11 15:07:14,424 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 254.3 MB. Free memory is still 230.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:07:14,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.64 ms. Allocated memory was 254.3 MB in the beginning and 319.8 MB in the end (delta: 65.5 MB). Free memory was 209.4 MB in the beginning and 273.3 MB in the end (delta: -63.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.2 GB. [2020-10-11 15:07:14,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.53 ms. Allocated memory is still 319.8 MB. Free memory was 273.3 MB in the beginning and 270.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:07:14,426 INFO L168 Benchmark]: Boogie Preprocessor took 24.31 ms. Allocated memory is still 319.8 MB. Free memory was 270.7 MB in the beginning and 268.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:07:14,427 INFO L168 Benchmark]: RCFGBuilder took 432.63 ms. Allocated memory is still 319.8 MB. Free memory was 268.2 MB in the beginning and 246.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:07:14,428 INFO L168 Benchmark]: TraceAbstraction took 3259.02 ms. Allocated memory was 319.8 MB in the beginning and 371.2 MB in the end (delta: 51.4 MB). Free memory was 246.4 MB in the beginning and 240.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 14.2 GB. [2020-10-11 15:07:14,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 254.3 MB. Free memory is still 230.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 689.64 ms. Allocated memory was 254.3 MB in the beginning and 319.8 MB in the end (delta: 65.5 MB). Free memory was 209.4 MB in the beginning and 273.3 MB in the end (delta: -63.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.53 ms. Allocated memory is still 319.8 MB. Free memory was 273.3 MB in the beginning and 270.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.31 ms. Allocated memory is still 319.8 MB. Free memory was 270.7 MB in the beginning and 268.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 432.63 ms. Allocated memory is still 319.8 MB. Free memory was 268.2 MB in the beginning and 246.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3259.02 ms. Allocated memory was 319.8 MB in the beginning and 371.2 MB in the end (delta: 51.4 MB). Free memory was 246.4 MB in the beginning and 240.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 738 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 44 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 76 PlacesBefore, 31 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 178 SDtfs, 200 SDslu, 303 SDs, 0 SdLazy, 161 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...