/usr/bin/java -Xmx8000000000 -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/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 00:21:35,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:21:35,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:21:35,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 00:21:35,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 00:21:35,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 00:21:35,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 00:21:35,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 00:21:35,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 00:21:35,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 00:21:35,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 00:21:35,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 00:21:35,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:21:35,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:21:35,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:21:35,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:21:35,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:21:35,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:21:35,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:21:35,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:21:35,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:21:35,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:21:35,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:21:35,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:21:35,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:21:35,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 00:21:35,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 00:21:35,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 00:21:35,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 00:21:35,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 00:21:35,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 00:21:35,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 00:21:35,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 00:21:35,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:21:35,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:21:35,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:21:35,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-15 00:21:35,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:21:35,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:21:35,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:21:35,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:21:35,863 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:21:35,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:21:35,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:21:35,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:21:35,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:21:35,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:21:35,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:21:35,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:21:35,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:21:35,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:21:35,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:21:35,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:21:35,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:21:35,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:21:35,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:21:35,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:21:35,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:21:35,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:21:35,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:21:35,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:21:35,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:21:35,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:21:35,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:21:35,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:21:35,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:21:35,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:21:36,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:21:36,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:21:36,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:21:36,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:21:36,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:21:36,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-09-15 00:21:36,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d2b93d32/29899e8faddb46bbad8aefa2b0e21d76/FLAGec4ad7983 [2020-09-15 00:21:37,090 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:21:37,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-09-15 00:21:37,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d2b93d32/29899e8faddb46bbad8aefa2b0e21d76/FLAGec4ad7983 [2020-09-15 00:21:37,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d2b93d32/29899e8faddb46bbad8aefa2b0e21d76 [2020-09-15 00:21:37,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:21:37,335 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:21:37,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:21:37,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:21:37,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:21:37,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:21:37" (1/1) ... [2020-09-15 00:21:37,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6fcb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:37, skipping insertion in model container [2020-09-15 00:21:37,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:21:37" (1/1) ... [2020-09-15 00:21:37,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:21:37,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:21:37,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:21:38,000 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:21:38,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:21:38,167 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:21:38,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38 WrapperNode [2020-09-15 00:21:38,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:21:38,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:21:38,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:21:38,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:21:38,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:21:38,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:21:38,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:21:38,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:21:38,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... [2020-09-15 00:21:38,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:21:38,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:21:38,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:21:38,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:21:38,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-15 00:21:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 00:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 00:21:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 00:21:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 00:21:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 00:21:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 00:21:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 00:21:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-15 00:21:38,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-15 00:21:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 00:21:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:21:38,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:21:38,341 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 00:21:38,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:21:38,730 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 00:21:38,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:21:38 BoogieIcfgContainer [2020-09-15 00:21:38,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:21:38,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:21:38,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:21:38,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:21:38,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:21:37" (1/3) ... [2020-09-15 00:21:38,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbefb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:21:38, skipping insertion in model container [2020-09-15 00:21:38,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:21:38" (2/3) ... [2020-09-15 00:21:38,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbefb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:21:38, skipping insertion in model container [2020-09-15 00:21:38,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:21:38" (3/3) ... [2020-09-15 00:21:38,745 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-09-15 00:21:38,757 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:21:38,757 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:21:38,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:21:38,768 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:21:38,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,806 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,806 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,807 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,808 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,808 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,808 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,809 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,810 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,810 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,810 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,810 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,811 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,811 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,816 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,816 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,835 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,835 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,836 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,836 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:21:38,871 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 00:21:38,895 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:21:38,895 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:21:38,896 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:21:38,896 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:21:38,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:21:38,896 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:21:38,896 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:21:38,897 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:21:38,915 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-15 00:21:38,918 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-15 00:21:38,973 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-15 00:21:38,973 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:21:38,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-15 00:21:38,984 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-15 00:21:39,025 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-15 00:21:39,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:21:39,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-15 00:21:39,032 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-15 00:21:39,034 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:21:40,770 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-15 00:21:40,832 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-15 00:21:40,832 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-15 00:21:40,837 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-15 00:21:40,932 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-15 00:21:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-15 00:21:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 00:21:40,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:40,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:40,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-15 00:21:40,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:40,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121695541] [2020-09-15 00:21:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:41,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121695541] [2020-09-15 00:21:41,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:41,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:21:41,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113921967] [2020-09-15 00:21:41,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-15 00:21:41,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:41,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-15 00:21:41,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 00:21:41,223 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-15 00:21:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:41,296 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-15 00:21:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-15 00:21:41,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-15 00:21:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:41,367 INFO L225 Difference]: With dead ends: 1450 [2020-09-15 00:21:41,367 INFO L226 Difference]: Without dead ends: 1194 [2020-09-15 00:21:41,369 INFO L675 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 [2020-09-15 00:21:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-15 00:21:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-15 00:21:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-15 00:21:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-15 00:21:41,521 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-15 00:21:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:41,523 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-15 00:21:41,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-15 00:21:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-15 00:21:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 00:21:41,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:41,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:41,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:21:41,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-15 00:21:41,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:41,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661254992] [2020-09-15 00:21:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:41,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661254992] [2020-09-15 00:21:41,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:41,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:21:41,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571706053] [2020-09-15 00:21:41,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:21:41,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:41,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:21:41,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:21:41,708 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-15 00:21:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:41,765 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-15 00:21:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:21:41,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 00:21:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:41,776 INFO L225 Difference]: With dead ends: 1322 [2020-09-15 00:21:41,776 INFO L226 Difference]: Without dead ends: 1066 [2020-09-15 00:21:41,777 INFO L675 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 [2020-09-15 00:21:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-15 00:21:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-15 00:21:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-15 00:21:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-15 00:21:41,822 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-15 00:21:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:41,822 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-15 00:21:41,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:21:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-15 00:21:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 00:21:41,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:41,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:41,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:21:41,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-09-15 00:21:41,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:41,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149308572] [2020-09-15 00:21:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:41,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149308572] [2020-09-15 00:21:41,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:41,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:21:41,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177473208] [2020-09-15 00:21:41,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:21:41,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:41,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:21:41,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:21:41,930 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-15 00:21:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:41,969 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-15 00:21:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:21:41,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 00:21:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:41,978 INFO L225 Difference]: With dead ends: 1162 [2020-09-15 00:21:41,979 INFO L226 Difference]: Without dead ends: 970 [2020-09-15 00:21:41,979 INFO L675 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 [2020-09-15 00:21:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-15 00:21:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-15 00:21:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-15 00:21:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-15 00:21:42,017 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-15 00:21:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,018 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-15 00:21:42,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:21:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-15 00:21:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:21:42,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:42,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:42,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:21:42,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:42,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:42,021 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-09-15 00:21:42,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:42,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961493699] [2020-09-15 00:21:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:42,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961493699] [2020-09-15 00:21:42,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:42,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:21:42,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560575867] [2020-09-15 00:21:42,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:21:42,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:42,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:21:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:21:42,104 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-09-15 00:21:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:42,136 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-09-15 00:21:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:21:42,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 00:21:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:42,144 INFO L225 Difference]: With dead ends: 1042 [2020-09-15 00:21:42,145 INFO L226 Difference]: Without dead ends: 898 [2020-09-15 00:21:42,146 INFO L675 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 [2020-09-15 00:21:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-09-15 00:21:42,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-09-15 00:21:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-09-15 00:21:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-09-15 00:21:42,178 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-09-15 00:21:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,179 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-09-15 00:21:42,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:21:42,179 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-09-15 00:21:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 00:21:42,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:42,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:42,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:21:42,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1753289104, now seen corresponding path program 1 times [2020-09-15 00:21:42,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:42,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286223997] [2020-09-15 00:21:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:42,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286223997] [2020-09-15 00:21:42,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:42,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:21:42,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572247140] [2020-09-15 00:21:42,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:21:42,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:42,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:21:42,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:21:42,319 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-09-15 00:21:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:42,352 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-09-15 00:21:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:21:42,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-15 00:21:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:42,359 INFO L225 Difference]: With dead ends: 952 [2020-09-15 00:21:42,360 INFO L226 Difference]: Without dead ends: 844 [2020-09-15 00:21:42,360 INFO L675 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 [2020-09-15 00:21:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-15 00:21:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-09-15 00:21:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-09-15 00:21:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-09-15 00:21:42,415 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-09-15 00:21:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,416 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-09-15 00:21:42,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:21:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-09-15 00:21:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:21:42,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:42,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:42,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:21:42,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-09-15 00:21:42,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:42,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996073900] [2020-09-15 00:21:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:42,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996073900] [2020-09-15 00:21:42,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:42,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:21:42,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180146220] [2020-09-15 00:21:42,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:21:42,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:42,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:21:42,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:21:42,495 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-09-15 00:21:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:42,540 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-09-15 00:21:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:21:42,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-15 00:21:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:42,546 INFO L225 Difference]: With dead ends: 1063 [2020-09-15 00:21:42,546 INFO L226 Difference]: Without dead ends: 598 [2020-09-15 00:21:42,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 00:21:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-15 00:21:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-15 00:21:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-15 00:21:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1914 transitions. [2020-09-15 00:21:42,565 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1914 transitions. Word has length 15 [2020-09-15 00:21:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,565 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1914 transitions. [2020-09-15 00:21:42,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:21:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1914 transitions. [2020-09-15 00:21:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-15 00:21:42,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:42,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:42,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 00:21:42,567 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1363663410, now seen corresponding path program 1 times [2020-09-15 00:21:42,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:42,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930739810] [2020-09-15 00:21:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:42,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930739810] [2020-09-15 00:21:42,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:42,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:21:42,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783338847] [2020-09-15 00:21:42,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:21:42,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:21:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:21:42,645 INFO L87 Difference]: Start difference. First operand 598 states and 1914 transitions. Second operand 5 states. [2020-09-15 00:21:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:42,688 INFO L93 Difference]: Finished difference Result 712 states and 2245 transitions. [2020-09-15 00:21:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:21:42,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-15 00:21:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:42,691 INFO L225 Difference]: With dead ends: 712 [2020-09-15 00:21:42,691 INFO L226 Difference]: Without dead ends: 292 [2020-09-15 00:21:42,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 00:21:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-15 00:21:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-09-15 00:21:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-15 00:21:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-09-15 00:21:42,701 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-09-15 00:21:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,702 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-09-15 00:21:42,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:21:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-09-15 00:21:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:21:42,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:42,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:42,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 00:21:42,703 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:42,704 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-09-15 00:21:42,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:42,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798294548] [2020-09-15 00:21:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:42,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798294548] [2020-09-15 00:21:42,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:42,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:21:42,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897366944] [2020-09-15 00:21:42,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:21:42,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:21:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:21:42,776 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-09-15 00:21:42,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:42,816 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-09-15 00:21:42,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:21:42,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:21:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:42,819 INFO L225 Difference]: With dead ends: 352 [2020-09-15 00:21:42,819 INFO L226 Difference]: Without dead ends: 154 [2020-09-15 00:21:42,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 00:21:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-15 00:21:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-15 00:21:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-15 00:21:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-09-15 00:21:42,825 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-09-15 00:21:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,825 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-09-15 00:21:42,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:21:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-09-15 00:21:42,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 00:21:42,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:21:42,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:21:42,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 00:21:42,827 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:21:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:21:42,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-09-15 00:21:42,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:21:42,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144251544] [2020-09-15 00:21:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:21:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:21:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:21:42,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144251544] [2020-09-15 00:21:42,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:21:42,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:21:42,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960015321] [2020-09-15 00:21:42,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:21:42,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:21:42,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:21:42,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:21:42,901 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-09-15 00:21:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:21:42,934 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-09-15 00:21:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:21:42,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-15 00:21:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:21:42,936 INFO L225 Difference]: With dead ends: 130 [2020-09-15 00:21:42,936 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 00:21:42,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 00:21:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 00:21:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 00:21:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 00:21:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 00:21:42,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-15 00:21:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:21:42,938 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 00:21:42,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:21:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 00:21:42,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 00:21:42,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 00:21:42,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 12:21:42 BasicIcfg [2020-09-15 00:21:42,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 00:21:42,946 INFO L168 Benchmark]: Toolchain (without parser) took 5616.91 ms. Allocated memory was 140.0 MB in the beginning and 298.8 MB in the end (delta: 158.9 MB). Free memory was 101.8 MB in the beginning and 162.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 97.9 MB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,947 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 829.97 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 160.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.64 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,949 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,950 INFO L168 Benchmark]: RCFGBuilder took 480.42 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 132.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,951 INFO L168 Benchmark]: TraceAbstraction took 4206.52 ms. Allocated memory was 203.9 MB in the beginning and 298.8 MB in the end (delta: 94.9 MB). Free memory was 131.3 MB in the beginning and 162.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-09-15 00:21:42,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 829.97 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 160.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.64 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.42 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 132.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4206.52 ms. Allocated memory was 203.9 MB in the beginning and 298.8 MB in the end (delta: 94.9 MB). Free memory was 131.3 MB in the beginning and 162.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 263 SDtfs, 280 SDslu, 349 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 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...