/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/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:51:54,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:51:54,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:51:54,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:51:54,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:51:54,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:51:54,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:51:54,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:51:54,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:51:54,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:51:54,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:51:54,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:51:54,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:51:54,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:51:54,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:51:54,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:51:54,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:51:54,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:51:54,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:51:54,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:51:54,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:51:54,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:51:54,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:51:54,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:51:54,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:51:54,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:51:54,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:51:54,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:51:54,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:51:54,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:51:54,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:51:54,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:51:54,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:51:54,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:51:54,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:51:54,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:51:54,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:51:54,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:51:54,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:51:54,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:51:54,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:51:54,271 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 13:51:54,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:51:54,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:51:54,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:51:54,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:51:54,310 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:51:54,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:51:54,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:51:54,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:51:54,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:51:54,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:51:54,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:51:54,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:51:54,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:51:54,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:51:54,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:51:54,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:51:54,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:51:54,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:51:54,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:51:54,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:51:54,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:51:54,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:51:54,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:51:54,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:51:54,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:51:54,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:51:54,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:51:54,316 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:51:54,316 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:51:54,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:51:54,316 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:51:54,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:51:54,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:51:54,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:51:54,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:51:54,619 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:51:54,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-16 13:51:54,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47170987/1dead7c21e6347bb94d54f2348ef5b18/FLAGf485b748b [2020-10-16 13:51:55,121 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:51:55,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-16 13:51:55,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47170987/1dead7c21e6347bb94d54f2348ef5b18/FLAGf485b748b [2020-10-16 13:51:55,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47170987/1dead7c21e6347bb94d54f2348ef5b18 [2020-10-16 13:51:55,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:51:55,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:51:55,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:51:55,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:51:55,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:51:55,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:51:55" (1/1) ... [2020-10-16 13:51:55,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b10973e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:55, skipping insertion in model container [2020-10-16 13:51:55,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:51:55" (1/1) ... [2020-10-16 13:51:55,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:51:55,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:51:56,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:51:56,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:51:56,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:51:56,185 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:51:56,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56 WrapperNode [2020-10-16 13:51:56,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:51:56,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:51:56,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:51:56,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:51:56,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:51:56,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:51:56,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:51:56,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:51:56,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2020-10-16 13:51:56,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:51:56,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:51:56,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:51:56,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:51:56,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (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 13:51:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:51:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:51:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:51:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:51:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:51:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:51:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:51:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:51:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:51:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:51:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 13:51:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 13:51:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:51:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:51:56,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:51:56,344 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 13:51:56,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:51:56,772 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:51:56,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:51:56 BoogieIcfgContainer [2020-10-16 13:51:56,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:51:56,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:51:56,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:51:56,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:51:56,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:51:55" (1/3) ... [2020-10-16 13:51:56,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c1bfad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:51:56, skipping insertion in model container [2020-10-16 13:51:56,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (2/3) ... [2020-10-16 13:51:56,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c1bfad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:51:56, skipping insertion in model container [2020-10-16 13:51:56,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:51:56" (3/3) ... [2020-10-16 13:51:56,785 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-10-16 13:51:56,798 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:51:56,798 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:51:56,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:51:56,808 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:51:56,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,845 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,847 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,848 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,848 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,848 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,849 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,849 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,853 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,858 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,866 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,866 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,867 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:51:56,876 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:51:56,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:51:56,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:51:56,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:51:56,910 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:51:56,910 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:51:56,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:51:56,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:51:56,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:51:56,910 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:51:56,923 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:51:56,924 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-16 13:51:56,927 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-16 13:51:56,929 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-16 13:51:56,982 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-16 13:51:56,982 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:51:56,988 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. [2020-10-16 13:51:56,991 INFO L117 LiptonReduction]: Number of co-enabled transitions 2016 [2020-10-16 13:51:58,409 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-16 13:51:58,470 INFO L132 LiptonReduction]: Checked pairs total: 4737 [2020-10-16 13:51:58,470 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-16 13:51:58,478 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-16 13:51:58,587 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-16 13:51:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-16 13:51:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:51:58,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:58,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:58,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:58,607 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-16 13:51:58,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:58,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115954313] [2020-10-16 13:51:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:58,817 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 13:51:58,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115954313] [2020-10-16 13:51:58,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:58,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:51:58,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [702494260] [2020-10-16 13:51:58,821 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:58,824 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:58,839 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 13:51:58,839 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:58,844 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:58,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:51:58,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:51:58,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:51:58,862 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-16 13:51:58,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:58,909 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-16 13:51:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:51:58,914 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 13:51:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:58,953 INFO L225 Difference]: With dead ends: 1450 [2020-10-16 13:51:58,953 INFO L226 Difference]: Without dead ends: 1194 [2020-10-16 13:51:58,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:51:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-16 13:51:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-16 13:51:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-16 13:51:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-16 13:51:59,139 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-16 13:51:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:59,140 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-16 13:51:59,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:51:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-16 13:51:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:51:59,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:59,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:59,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:51:59,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:59,145 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-16 13:51:59,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:59,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771346448] [2020-10-16 13:51:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:59,271 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 13:51:59,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771346448] [2020-10-16 13:51:59,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:59,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:51:59,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [848245347] [2020-10-16 13:51:59,273 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:59,274 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:59,276 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 13:51:59,277 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:59,277 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:59,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:51:59,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:51:59,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:51:59,280 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-16 13:51:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:59,322 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-16 13:51:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:51:59,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:51:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:59,333 INFO L225 Difference]: With dead ends: 1322 [2020-10-16 13:51:59,334 INFO L226 Difference]: Without dead ends: 1066 [2020-10-16 13:51:59,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-16 13:51:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-16 13:51:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-16 13:51:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-16 13:51:59,414 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-16 13:51:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:59,414 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-16 13:51:59,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:51:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-16 13:51:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:51:59,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:59,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:59,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:51:59,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-10-16 13:51:59,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:59,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615404626] [2020-10-16 13:51:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:59,488 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 13:51:59,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615404626] [2020-10-16 13:51:59,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:59,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:51:59,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [401886575] [2020-10-16 13:51:59,490 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:59,491 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:59,494 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 13:51:59,494 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:59,559 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:59,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:51:59,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:59,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:51:59,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:51:59,560 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-16 13:51:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:59,593 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-16 13:51:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:51:59,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:51:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:59,602 INFO L225 Difference]: With dead ends: 1162 [2020-10-16 13:51:59,602 INFO L226 Difference]: Without dead ends: 970 [2020-10-16 13:51:59,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 13:51:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-16 13:51:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-16 13:51:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-16 13:51:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-16 13:51:59,643 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-16 13:51:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:59,643 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-16 13:51:59,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:51:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-16 13:51:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:51:59,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:59,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:59,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:51:59,647 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash -333650641, now seen corresponding path program 1 times [2020-10-16 13:51:59,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:59,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48026199] [2020-10-16 13:51:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:59,718 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 13:51:59,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48026199] [2020-10-16 13:51:59,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:59,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:51:59,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [128771346] [2020-10-16 13:51:59,720 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:59,721 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:59,725 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-10-16 13:51:59,725 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:51:59,809 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:51:59,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:51:59,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:51:59,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:51:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:51:59,811 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-16 13:51:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:51:59,867 INFO L93 Difference]: Finished difference Result 1210 states and 4120 transitions. [2020-10-16 13:51:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:51:59,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:51:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:51:59,872 INFO L225 Difference]: With dead ends: 1210 [2020-10-16 13:51:59,873 INFO L226 Difference]: Without dead ends: 586 [2020-10-16 13:51:59,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:51:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-16 13:51:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-10-16 13:51:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-16 13:51:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1872 transitions. [2020-10-16 13:51:59,896 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1872 transitions. Word has length 13 [2020-10-16 13:51:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:51:59,896 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1872 transitions. [2020-10-16 13:51:59,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:51:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1872 transitions. [2020-10-16 13:51:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:51:59,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:51:59,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:51:59,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:51:59,898 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:51:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:51:59,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1296364861, now seen corresponding path program 1 times [2020-10-16 13:51:59,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:51:59,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502144175] [2020-10-16 13:51:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:51:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:51:59,977 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 13:51:59,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502144175] [2020-10-16 13:51:59,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:51:59,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:51:59,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [5344387] [2020-10-16 13:51:59,979 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:51:59,981 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:51:59,989 INFO L258 McrAutomatonBuilder]: Finished intersection with 52 states and 100 transitions. [2020-10-16 13:51:59,989 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:00,195 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:00,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:00,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:00,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:00,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:00,197 INFO L87 Difference]: Start difference. First operand 586 states and 1872 transitions. Second operand 5 states. [2020-10-16 13:52:00,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:00,248 INFO L93 Difference]: Finished difference Result 802 states and 2494 transitions. [2020-10-16 13:52:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:00,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:52:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:00,252 INFO L225 Difference]: With dead ends: 802 [2020-10-16 13:52:00,252 INFO L226 Difference]: Without dead ends: 346 [2020-10-16 13:52:00,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:52:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-16 13:52:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-10-16 13:52:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-16 13:52:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1012 transitions. [2020-10-16 13:52:00,265 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1012 transitions. Word has length 15 [2020-10-16 13:52:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:00,265 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 1012 transitions. [2020-10-16 13:52:00,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1012 transitions. [2020-10-16 13:52:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:52:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:00,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:00,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:52:00,267 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 275175569, now seen corresponding path program 1 times [2020-10-16 13:52:00,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:00,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259062261] [2020-10-16 13:52:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:00,318 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 13:52:00,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259062261] [2020-10-16 13:52:00,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:00,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:00,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1527707334] [2020-10-16 13:52:00,320 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:00,321 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:00,329 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 70 transitions. [2020-10-16 13:52:00,329 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:00,409 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:00,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:00,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:00,410 INFO L87 Difference]: Start difference. First operand 346 states and 1012 transitions. Second operand 5 states. [2020-10-16 13:52:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:00,452 INFO L93 Difference]: Finished difference Result 430 states and 1224 transitions. [2020-10-16 13:52:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:00,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-16 13:52:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:00,454 INFO L225 Difference]: With dead ends: 430 [2020-10-16 13:52:00,455 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 13:52:00,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:52:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 13:52:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-10-16 13:52:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 13:52:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 398 transitions. [2020-10-16 13:52:00,461 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 398 transitions. Word has length 16 [2020-10-16 13:52:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:00,461 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 398 transitions. [2020-10-16 13:52:00,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 398 transitions. [2020-10-16 13:52:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:52:00,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:00,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:00,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:52:00,462 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash 355522076, now seen corresponding path program 1 times [2020-10-16 13:52:00,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:00,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699456083] [2020-10-16 13:52:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:00,518 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 13:52:00,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699456083] [2020-10-16 13:52:00,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:00,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:00,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [822366206] [2020-10-16 13:52:00,519 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:00,522 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:00,526 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-10-16 13:52:00,526 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:00,549 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:00,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:00,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:00,551 INFO L87 Difference]: Start difference. First operand 148 states and 398 transitions. Second operand 5 states. [2020-10-16 13:52:00,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:00,582 INFO L93 Difference]: Finished difference Result 124 states and 322 transitions. [2020-10-16 13:52:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:00,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:52:00,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:00,583 INFO L225 Difference]: With dead ends: 124 [2020-10-16 13:52:00,583 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:52:00,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:52:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:52:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:52:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:52:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:52:00,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:52:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:00,585 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:52:00,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:52:00,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:52:00,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:52:00,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:52:00 BasicIcfg [2020-10-16 13:52:00,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:52:00,592 INFO L168 Benchmark]: Toolchain (without parser) took 5145.95 ms. Allocated memory was 139.5 MB in the beginning and 292.6 MB in the end (delta: 153.1 MB). Free memory was 100.7 MB in the beginning and 170.1 MB in the end (delta: -69.3 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:00,593 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:52:00,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.31 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 161.5 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:00,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:00,596 INFO L168 Benchmark]: Boogie Preprocessor took 26.35 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:00,597 INFO L168 Benchmark]: RCFGBuilder took 510.83 ms. Allocated memory is still 205.0 MB. Free memory was 157.4 MB in the beginning and 132.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:00,598 INFO L168 Benchmark]: TraceAbstraction took 3813.49 ms. Allocated memory was 205.0 MB in the beginning and 292.6 MB in the end (delta: 87.6 MB). Free memory was 132.2 MB in the beginning and 170.1 MB in the end (delta: -37.9 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:00,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.31 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 161.5 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.35 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.83 ms. Allocated memory is still 205.0 MB. Free memory was 157.4 MB in the beginning and 132.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3813.49 ms. Allocated memory was 205.0 MB in the beginning and 292.6 MB in the end (delta: 87.6 MB). Free memory was 132.2 MB in the beginning and 170.1 MB in the end (delta: -37.9 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1056 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 115 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 97 PlacesBefore, 41 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 4737 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 204 SDtfs, 225 SDslu, 297 SDs, 0 SdLazy, 51 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...