/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:39:14,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:39:14,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:39:14,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:39:14,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:39:14,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:39:14,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:39:14,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:39:14,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:39:14,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:39:14,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:39:14,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:39:14,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:39:14,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:39:14,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:39:14,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:39:14,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:39:14,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:39:14,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:39:14,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:39:14,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:39:14,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:39:14,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:39:14,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:39:14,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 13:39:14,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:39:14,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:39:14,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:39:14,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:39:14,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:39:14,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:39:14,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:39:14,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:39:14,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:39:14,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:39:14,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:39:14,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:39:14,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:39:14,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:39:14,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:39:14,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:39:14,807 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:39:14,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:39:14,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:39:14,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:39:14,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:39:14,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:39:14,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:39:14,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:39:14,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:39:14,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:39:14,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:39:14,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:39:14,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:39:14,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:39:14,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:39:14,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:39:14,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:39:14,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:39:14,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:39:14,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:39:14,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:39:14,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:39:14,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:39:14,811 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:39:14,812 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:39:14,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:39:14,812 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:39:15,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:39:15,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:39:15,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:39:15,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:39:15,136 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:39:15,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-16 13:39:15,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/079a80a64/33da84ac331a48d3bf33bea650925d27/FLAGf05a399ca [2020-10-16 13:39:15,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:39:15,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-10-16 13:39:15,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/079a80a64/33da84ac331a48d3bf33bea650925d27/FLAGf05a399ca [2020-10-16 13:39:16,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/079a80a64/33da84ac331a48d3bf33bea650925d27 [2020-10-16 13:39:16,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:39:16,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:39:16,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:16,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:39:16,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:39:16,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782df25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16, skipping insertion in model container [2020-10-16 13:39:16,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:39:16,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:39:16,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:16,612 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:39:16,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:16,741 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:39:16,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16 WrapperNode [2020-10-16 13:39:16,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:16,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:16,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:39:16,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:39:16,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:16,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:39:16,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:39:16,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:39:16,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (1/1) ... [2020-10-16 13:39:16,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:39:16,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:39:16,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:39:16,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:39:16,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (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 [2020-10-16 13:39:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:39:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:39:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:39:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:39:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:39:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:39:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:39:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:39:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:39:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:39:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:39:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:39:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:39:16,908 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:39:17,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:39:17,305 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:39:17,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:17 BoogieIcfgContainer [2020-10-16 13:39:17,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:39:17,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:39:17,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:39:17,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:39:17,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:16" (1/3) ... [2020-10-16 13:39:17,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b43247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:17, skipping insertion in model container [2020-10-16 13:39:17,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:16" (2/3) ... [2020-10-16 13:39:17,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b43247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:17, skipping insertion in model container [2020-10-16 13:39:17,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:17" (3/3) ... [2020-10-16 13:39:17,317 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-10-16 13:39:17,329 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:39:17,329 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:39:17,338 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:39:17,339 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:39:17,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,371 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,371 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,373 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,373 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,374 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,378 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:17,392 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:39:17,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:39:17,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:39:17,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:39:17,429 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:39:17,429 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:39:17,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:39:17,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:39:17,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:39:17,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:39:17,443 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:39:17,444 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:39:17,446 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:39:17,448 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:39:17,492 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:39:17,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:39:17,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:39:17,500 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:39:18,732 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 13:39:18,876 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-16 13:39:18,917 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-16 13:39:18,917 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 13:39:18,924 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:39:18,951 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:39:18,953 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:39:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:39:18,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:18,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:18,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-16 13:39:18,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:18,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637926419] [2020-10-16 13:39:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:19,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637926419] [2020-10-16 13:39:19,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:19,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:39:19,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1856473062] [2020-10-16 13:39:19,190 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:19,193 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:19,208 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:39:19,208 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:19,212 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:19,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:39:19,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:19,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:39:19,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:39:19,231 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:39:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:19,270 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 13:39:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:39:19,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:39:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:19,290 INFO L225 Difference]: With dead ends: 282 [2020-10-16 13:39:19,291 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 13:39:19,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:39:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 13:39:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 13:39:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 13:39:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 13:39:19,358 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 13:39:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:19,359 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 13:39:19,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:39:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 13:39:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:39:19,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:19,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:19,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:39:19,362 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:19,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-16 13:39:19,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:19,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77401137] [2020-10-16 13:39:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:19,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77401137] [2020-10-16 13:39:19,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:19,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:19,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [857092259] [2020-10-16 13:39:19,475 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:19,476 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:19,479 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:39:19,479 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:19,533 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:19,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:19,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:19,535 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 13:39:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:19,560 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 13:39:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:39:19,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:39:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:19,562 INFO L225 Difference]: With dead ends: 242 [2020-10-16 13:39:19,562 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 13:39:19,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 13:39:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-16 13:39:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 13:39:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-16 13:39:19,574 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-16 13:39:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:19,575 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-16 13:39:19,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-16 13:39:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:39:19,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:19,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:19,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:39:19,577 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:19,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-16 13:39:19,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:19,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432957544] [2020-10-16 13:39:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:19,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432957544] [2020-10-16 13:39:19,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:19,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:39:19,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [188178611] [2020-10-16 13:39:19,633 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:19,634 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:19,636 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-10-16 13:39:19,637 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:19,642 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:19,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:39:19,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:19,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:39:19,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:39:19,643 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-10-16 13:39:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:19,654 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-10-16 13:39:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:39:19,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 13:39:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:19,656 INFO L225 Difference]: With dead ends: 110 [2020-10-16 13:39:19,656 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 13:39:19,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:39:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 13:39:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-16 13:39:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 13:39:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-10-16 13:39:19,665 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-10-16 13:39:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:19,666 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-10-16 13:39:19,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:39:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-10-16 13:39:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:39:19,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:19,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:19,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:39:19,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-16 13:39:19,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:19,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591310163] [2020-10-16 13:39:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:19,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591310163] [2020-10-16 13:39:19,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:19,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:19,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1497749076] [2020-10-16 13:39:19,712 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:19,714 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:19,717 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 13:39:19,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:19,727 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:19,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:39:19,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:19,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:39:19,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:39:19,728 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-10-16 13:39:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:19,740 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-10-16 13:39:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:39:19,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 13:39:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:19,742 INFO L225 Difference]: With dead ends: 104 [2020-10-16 13:39:19,742 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 13:39:19,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:39:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 13:39:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 13:39:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 13:39:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-10-16 13:39:19,750 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-10-16 13:39:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:19,750 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-10-16 13:39:19,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:39:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-10-16 13:39:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:39:19,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:19,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:19,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:39:19,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-10-16 13:39:19,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:19,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962990850] [2020-10-16 13:39:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:19,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962990850] [2020-10-16 13:39:19,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:19,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:19,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1524684730] [2020-10-16 13:39:19,796 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:19,797 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:19,801 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-10-16 13:39:19,801 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:19,824 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:19,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:19,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:19,826 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-10-16 13:39:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:19,849 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-10-16 13:39:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:19,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:39:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:19,851 INFO L225 Difference]: With dead ends: 158 [2020-10-16 13:39:19,851 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 13:39:19,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 13:39:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 13:39:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 13:39:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-10-16 13:39:19,858 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-10-16 13:39:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:19,858 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-10-16 13:39:19,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-10-16 13:39:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:39:19,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:19,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:19,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:39:19,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:19,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-10-16 13:39:19,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:19,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977896327] [2020-10-16 13:39:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:19,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977896327] [2020-10-16 13:39:19,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:19,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:19,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1030417535] [2020-10-16 13:39:19,958 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:19,959 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:19,963 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 13:39:19,963 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:19,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:20,038 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:20,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:20,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:20,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:20,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:20,040 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-10-16 13:39:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:20,069 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-10-16 13:39:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:20,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:39:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:20,071 INFO L225 Difference]: With dead ends: 127 [2020-10-16 13:39:20,071 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 13:39:20,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 13:39:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-16 13:39:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 13:39:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-10-16 13:39:20,077 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-10-16 13:39:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:20,077 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-10-16 13:39:20,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-10-16 13:39:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:20,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:20,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:20,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:39:20,079 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:20,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-16 13:39:20,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:20,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79135815] [2020-10-16 13:39:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:20,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79135815] [2020-10-16 13:39:20,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:20,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:20,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1588444902] [2020-10-16 13:39:20,134 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:20,136 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:20,139 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 13:39:20,140 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:20,197 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:39:20,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:39:20,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:20,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:39:20,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:39:20,198 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-10-16 13:39:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:20,243 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-10-16 13:39:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:39:20,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 13:39:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:20,245 INFO L225 Difference]: With dead ends: 90 [2020-10-16 13:39:20,245 INFO L226 Difference]: Without dead ends: 65 [2020-10-16 13:39:20,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-16 13:39:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-16 13:39:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 13:39:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-10-16 13:39:20,249 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-10-16 13:39:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:20,250 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-10-16 13:39:20,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:39:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-10-16 13:39:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:20,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:20,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:20,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:39:20,251 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-16 13:39:20,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:20,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694400993] [2020-10-16 13:39:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:20,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694400993] [2020-10-16 13:39:20,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:20,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:39:20,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [197910376] [2020-10-16 13:39:20,307 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:20,308 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:20,313 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-16 13:39:20,313 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:20,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:20,368 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:39:20,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:39:20,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:20,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:39:20,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:20,370 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-10-16 13:39:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:20,414 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-10-16 13:39:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:20,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:39:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:20,415 INFO L225 Difference]: With dead ends: 62 [2020-10-16 13:39:20,415 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 13:39:20,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:39:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 13:39:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 13:39:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 13:39:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-10-16 13:39:20,418 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-10-16 13:39:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:20,419 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-10-16 13:39:20,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:39:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-10-16 13:39:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:39:20,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:20,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:20,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:39:20,420 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:20,421 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-16 13:39:20,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:20,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178815358] [2020-10-16 13:39:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:20,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178815358] [2020-10-16 13:39:20,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:20,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:20,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [953151550] [2020-10-16 13:39:20,454 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:20,456 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:20,461 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-10-16 13:39:20,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:20,487 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:20,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:20,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:20,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:20,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:20,488 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-10-16 13:39:20,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:20,505 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-10-16 13:39:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:39:20,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:39:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:20,506 INFO L225 Difference]: With dead ends: 63 [2020-10-16 13:39:20,506 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 13:39:20,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:20,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 13:39:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 13:39:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 13:39:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-16 13:39:20,509 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-16 13:39:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:20,509 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-16 13:39:20,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-16 13:39:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:39:20,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:20,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:20,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:39:20,510 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:20,511 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-10-16 13:39:20,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:20,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531905805] [2020-10-16 13:39:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:20,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531905805] [2020-10-16 13:39:20,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:20,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:20,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [721109905] [2020-10-16 13:39:20,544 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:20,546 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:20,551 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-10-16 13:39:20,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:20,564 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:20,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:20,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:20,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:20,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:20,565 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-16 13:39:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:20,580 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-10-16 13:39:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:20,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:39:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:20,581 INFO L225 Difference]: With dead ends: 48 [2020-10-16 13:39:20,581 INFO L226 Difference]: Without dead ends: 30 [2020-10-16 13:39:20,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-16 13:39:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-16 13:39:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-16 13:39:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-16 13:39:20,583 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-16 13:39:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:20,584 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-16 13:39:20,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-16 13:39:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:39:20,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:20,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:20,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:39:20,585 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-10-16 13:39:20,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:20,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208464897] [2020-10-16 13:39:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:20,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208464897] [2020-10-16 13:39:20,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:20,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:20,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [521204636] [2020-10-16 13:39:20,620 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:20,622 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:20,655 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-10-16 13:39:20,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:20,670 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:20,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:20,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:20,672 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-16 13:39:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:20,685 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-16 13:39:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:39:20,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:39:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:20,686 INFO L225 Difference]: With dead ends: 29 [2020-10-16 13:39:20,686 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:39:20,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:39:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:39:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:39:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:39:20,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:39:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:20,688 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:39:20,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:39:20,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:39:20,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 13:39:20,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:20 BasicIcfg [2020-10-16 13:39:20,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:39:20,694 INFO L168 Benchmark]: Toolchain (without parser) took 4607.63 ms. Allocated memory was 140.5 MB in the beginning and 283.6 MB in the end (delta: 143.1 MB). Free memory was 101.8 MB in the beginning and 244.9 MB in the end (delta: -143.1 MB). Peak memory consumption was 49.5 kB. Max. memory is 7.1 GB. [2020-10-16 13:39:20,695 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 13:39:20,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.92 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 161.1 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:20,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.52 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 158.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:20,697 INFO L168 Benchmark]: Boogie Preprocessor took 27.68 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 157.4 MB in the end (delta: 932.9 kB). Peak memory consumption was 932.9 kB. Max. memory is 7.1 GB. [2020-10-16 13:39:20,698 INFO L168 Benchmark]: RCFGBuilder took 486.51 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 134.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:20,699 INFO L168 Benchmark]: TraceAbstraction took 3383.24 ms. Allocated memory was 203.9 MB in the beginning and 283.6 MB in the end (delta: 79.7 MB). Free memory was 134.6 MB in the beginning and 244.9 MB in the end (delta: -110.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:39:20,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 654.92 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 161.1 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.52 ms. Allocated memory is still 203.9 MB. Free memory was 161.1 MB in the beginning and 158.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.68 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 157.4 MB in the end (delta: 932.9 kB). Peak memory consumption was 932.9 kB. Max. memory is 7.1 GB. * RCFGBuilder took 486.51 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 134.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3383.24 ms. Allocated memory was 203.9 MB in the beginning and 283.6 MB in the end (delta: 79.7 MB). Free memory was 134.6 MB in the beginning and 244.9 MB in the end (delta: -110.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 664 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 214 SDtfs, 132 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...