/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:30:48,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:30:48,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:30:48,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:30:48,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:30:48,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:30:48,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:30:48,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:30:48,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:30:48,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:30:48,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:30:48,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:30:48,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:30:48,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:30:48,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:30:48,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:30:48,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 17:30:48,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:30:48,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:30:48,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:30:48,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:30:48,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:30:48,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:30:48,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:30:48,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:30:48,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:30:48,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:30:48,363 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:30:48,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:30:48,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:30:48,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:30:48,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:30:48,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:30:48,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:30:48,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:30:48,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:30:48,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:30:48,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:30:48,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:30:48,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:30:48,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:30:48,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:30:48,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:30:48,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:30:48,629 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:30:48,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-03-10 17:30:48,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad46f0442/3856a23886e041f4b9afc639107a1b1f/FLAG4b31bc581 [2021-03-10 17:30:49,098 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:30:49,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-03-10 17:30:49,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad46f0442/3856a23886e041f4b9afc639107a1b1f/FLAG4b31bc581 [2021-03-10 17:30:49,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad46f0442/3856a23886e041f4b9afc639107a1b1f [2021-03-10 17:30:49,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:30:49,138 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:30:49,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:49,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:30:49,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:30:49,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6a9612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49, skipping insertion in model container [2021-03-10 17:30:49,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:30:49,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:30:49,318 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i[950,963] [2021-03-10 17:30:49,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:49,456 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:30:49,464 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i[950,963] [2021-03-10 17:30:49,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:30:49,548 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:30:49,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49 WrapperNode [2021-03-10 17:30:49,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:30:49,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:49,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:30:49,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:30:49,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:30:49,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:30:49,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:30:49,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:30:49,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... [2021-03-10 17:30:49,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:30:49,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:30:49,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:30:49,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:30:49,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:30:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:30:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:30:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:30:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:30:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:30:49,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:30:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:30:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:30:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:30:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:30:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-10 17:30:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-10 17:30:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:30:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:30:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:30:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:30:49,709 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:30:50,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:30:50,020 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:30:50,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:50 BoogieIcfgContainer [2021-03-10 17:30:50,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:30:50,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:30:50,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:30:50,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:30:50,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:30:49" (1/3) ... [2021-03-10 17:30:50,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e408f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:50, skipping insertion in model container [2021-03-10 17:30:50,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:30:49" (2/3) ... [2021-03-10 17:30:50,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e408f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:30:50, skipping insertion in model container [2021-03-10 17:30:50,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:30:50" (3/3) ... [2021-03-10 17:30:50,028 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-03-10 17:30:50,031 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:30:50,032 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:30:50,035 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:30:50,035 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,064 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,064 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,064 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,070 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,071 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,071 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,071 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,071 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,071 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,071 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,072 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,072 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,072 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,072 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,074 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,074 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,074 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,074 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,078 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,079 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,079 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,079 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,081 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:30:50,086 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:30:50,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-10 17:30:50,117 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:30:50,118 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:30:50,118 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:30:50,118 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:30:50,118 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:30:50,118 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:30:50,118 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:30:50,118 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:30:50,127 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 85 transitions, 190 flow [2021-03-10 17:30:55,495 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49019 states, 49017 states have (on average 4.388579472427933) internal successors, (215115), 49018 states have internal predecessors, (215115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 49019 states, 49017 states have (on average 4.388579472427933) internal successors, (215115), 49018 states have internal predecessors, (215115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:30:55,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:55,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:30:55,752 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -898252917, now seen corresponding path program 1 times [2021-03-10 17:30:55,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:55,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122739899] [2021-03-10 17:30:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:56,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122739899] [2021-03-10 17:30:56,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:56,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:30:56,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917349511] [2021-03-10 17:30:56,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:30:56,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:56,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:30:56,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:30:56,235 INFO L87 Difference]: Start difference. First operand has 49019 states, 49017 states have (on average 4.388579472427933) internal successors, (215115), 49018 states have internal predecessors, (215115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:30:57,486 INFO L93 Difference]: Finished difference Result 131063 states and 560479 transitions. [2021-03-10 17:30:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:30:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-03-10 17:30:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:30:57,968 INFO L225 Difference]: With dead ends: 131063 [2021-03-10 17:30:57,968 INFO L226 Difference]: Without dead ends: 39363 [2021-03-10 17:30:57,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:30:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39363 states. [2021-03-10 17:30:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39363 to 31491. [2021-03-10 17:30:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31491 states, 31490 states have (on average 4.1825023817084785) internal successors, (131707), 31490 states have internal predecessors, (131707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31491 states to 31491 states and 131707 transitions. [2021-03-10 17:30:59,447 INFO L78 Accepts]: Start accepts. Automaton has 31491 states and 131707 transitions. Word has length 43 [2021-03-10 17:30:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:30:59,448 INFO L480 AbstractCegarLoop]: Abstraction has 31491 states and 131707 transitions. [2021-03-10 17:30:59,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:30:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 31491 states and 131707 transitions. [2021-03-10 17:30:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:30:59,487 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:30:59,488 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:30:59,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:30:59,488 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:30:59,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:30:59,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1431582908, now seen corresponding path program 1 times [2021-03-10 17:30:59,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:30:59,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235985315] [2021-03-10 17:30:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:30:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:30:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:30:59,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235985315] [2021-03-10 17:30:59,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:30:59,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:30:59,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483575760] [2021-03-10 17:30:59,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:30:59,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:30:59,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:30:59,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:30:59,603 INFO L87 Difference]: Start difference. First operand 31491 states and 131707 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:00,268 INFO L93 Difference]: Finished difference Result 48075 states and 198543 transitions. [2021-03-10 17:31:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:31:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:00,413 INFO L225 Difference]: With dead ends: 48075 [2021-03-10 17:31:00,413 INFO L226 Difference]: Without dead ends: 36411 [2021-03-10 17:31:00,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36411 states. [2021-03-10 17:31:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36411 to 28811. [2021-03-10 17:31:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28811 states, 28810 states have (on average 4.160048594238112) internal successors, (119851), 28810 states have internal predecessors, (119851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28811 states to 28811 states and 119851 transitions. [2021-03-10 17:31:01,423 INFO L78 Accepts]: Start accepts. Automaton has 28811 states and 119851 transitions. Word has length 45 [2021-03-10 17:31:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:01,424 INFO L480 AbstractCegarLoop]: Abstraction has 28811 states and 119851 transitions. [2021-03-10 17:31:01,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28811 states and 119851 transitions. [2021-03-10 17:31:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:31:01,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:01,463 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:01,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:31:01,464 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:01,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1862186732, now seen corresponding path program 1 times [2021-03-10 17:31:01,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:01,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933022699] [2021-03-10 17:31:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:01,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933022699] [2021-03-10 17:31:01,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:01,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:01,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528565858] [2021-03-10 17:31:01,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:01,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:01,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:01,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:01,563 INFO L87 Difference]: Start difference. First operand 28811 states and 119851 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:01,768 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-03-10 17:31:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:02,117 INFO L93 Difference]: Finished difference Result 40763 states and 167471 transitions. [2021-03-10 17:31:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:31:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:02,215 INFO L225 Difference]: With dead ends: 40763 [2021-03-10 17:31:02,215 INFO L226 Difference]: Without dead ends: 32859 [2021-03-10 17:31:02,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 329.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32859 states. [2021-03-10 17:31:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32859 to 24491. [2021-03-10 17:31:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24491 states, 24490 states have (on average 4.129808084932626) internal successors, (101139), 24490 states have internal predecessors, (101139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24491 states to 24491 states and 101139 transitions. [2021-03-10 17:31:03,219 INFO L78 Accepts]: Start accepts. Automaton has 24491 states and 101139 transitions. Word has length 45 [2021-03-10 17:31:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:03,220 INFO L480 AbstractCegarLoop]: Abstraction has 24491 states and 101139 transitions. [2021-03-10 17:31:03,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 24491 states and 101139 transitions. [2021-03-10 17:31:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:31:03,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:03,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:03,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:31:03,278 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:03,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1138513955, now seen corresponding path program 1 times [2021-03-10 17:31:03,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:03,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863877593] [2021-03-10 17:31:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:03,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863877593] [2021-03-10 17:31:03,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:03,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:31:03,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290329781] [2021-03-10 17:31:03,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:31:03,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:03,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:31:03,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:31:03,385 INFO L87 Difference]: Start difference. First operand 24491 states and 101139 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:03,597 INFO L93 Difference]: Finished difference Result 27995 states and 114919 transitions. [2021-03-10 17:31:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:31:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 17:31:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:03,659 INFO L225 Difference]: With dead ends: 27995 [2021-03-10 17:31:03,659 INFO L226 Difference]: Without dead ends: 23675 [2021-03-10 17:31:03,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23675 states. [2021-03-10 17:31:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23675 to 23307. [2021-03-10 17:31:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23307 states, 23306 states have (on average 4.113061014331073) internal successors, (95859), 23306 states have internal predecessors, (95859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23307 states to 23307 states and 95859 transitions. [2021-03-10 17:31:04,327 INFO L78 Accepts]: Start accepts. Automaton has 23307 states and 95859 transitions. Word has length 47 [2021-03-10 17:31:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:04,327 INFO L480 AbstractCegarLoop]: Abstraction has 23307 states and 95859 transitions. [2021-03-10 17:31:04,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 23307 states and 95859 transitions. [2021-03-10 17:31:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:31:04,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:04,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:04,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:31:04,362 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash 251954349, now seen corresponding path program 1 times [2021-03-10 17:31:04,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:04,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202438232] [2021-03-10 17:31:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:04,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202438232] [2021-03-10 17:31:04,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:04,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:31:04,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756935508] [2021-03-10 17:31:04,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:31:04,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:04,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:31:04,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:31:04,447 INFO L87 Difference]: Start difference. First operand 23307 states and 95859 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:04,896 INFO L93 Difference]: Finished difference Result 42739 states and 174077 transitions. [2021-03-10 17:31:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:31:04,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:31:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:04,964 INFO L225 Difference]: With dead ends: 42739 [2021-03-10 17:31:04,964 INFO L226 Difference]: Without dead ends: 25259 [2021-03-10 17:31:04,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:31:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25259 states. [2021-03-10 17:31:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25259 to 20427. [2021-03-10 17:31:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20427 states, 20426 states have (on average 4.078576324292568) internal successors, (83309), 20426 states have internal predecessors, (83309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20427 states to 20427 states and 83309 transitions. [2021-03-10 17:31:05,595 INFO L78 Accepts]: Start accepts. Automaton has 20427 states and 83309 transitions. Word has length 48 [2021-03-10 17:31:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:05,595 INFO L480 AbstractCegarLoop]: Abstraction has 20427 states and 83309 transitions. [2021-03-10 17:31:05,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 20427 states and 83309 transitions. [2021-03-10 17:31:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:31:05,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:05,625 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:05,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:31:05,625 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:05,625 INFO L82 PathProgramCache]: Analyzing trace with hash 479537340, now seen corresponding path program 1 times [2021-03-10 17:31:05,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:05,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035224872] [2021-03-10 17:31:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:05,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035224872] [2021-03-10 17:31:05,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:05,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:31:05,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876595499] [2021-03-10 17:31:05,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:31:05,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:31:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:31:05,684 INFO L87 Difference]: Start difference. First operand 20427 states and 83309 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:05,863 INFO L93 Difference]: Finished difference Result 21707 states and 88093 transitions. [2021-03-10 17:31:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:31:05,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 17:31:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:05,914 INFO L225 Difference]: With dead ends: 21707 [2021-03-10 17:31:05,914 INFO L226 Difference]: Without dead ends: 19467 [2021-03-10 17:31:05,914 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19467 states. [2021-03-10 17:31:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19467 to 18571. [2021-03-10 17:31:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18571 states, 18570 states have (on average 4.065751211631664) internal successors, (75501), 18570 states have internal predecessors, (75501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18571 states to 18571 states and 75501 transitions. [2021-03-10 17:31:06,479 INFO L78 Accepts]: Start accepts. Automaton has 18571 states and 75501 transitions. Word has length 49 [2021-03-10 17:31:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:06,480 INFO L480 AbstractCegarLoop]: Abstraction has 18571 states and 75501 transitions. [2021-03-10 17:31:06,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 18571 states and 75501 transitions. [2021-03-10 17:31:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:31:06,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:06,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:06,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:31:06,506 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1684804923, now seen corresponding path program 1 times [2021-03-10 17:31:06,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:06,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864943320] [2021-03-10 17:31:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:06,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864943320] [2021-03-10 17:31:06,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:06,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:06,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726710005] [2021-03-10 17:31:06,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:06,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:06,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:06,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:06,594 INFO L87 Difference]: Start difference. First operand 18571 states and 75501 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:06,872 INFO L93 Difference]: Finished difference Result 32043 states and 128333 transitions. [2021-03-10 17:31:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:06,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-03-10 17:31:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:06,928 INFO L225 Difference]: With dead ends: 32043 [2021-03-10 17:31:06,929 INFO L226 Difference]: Without dead ends: 23115 [2021-03-10 17:31:06,929 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:06,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23115 states. [2021-03-10 17:31:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23115 to 16459. [2021-03-10 17:31:07,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16459 states, 16458 states have (on average 4.01148377688662) internal successors, (66021), 16458 states have internal predecessors, (66021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16459 states to 16459 states and 66021 transitions. [2021-03-10 17:31:07,533 INFO L78 Accepts]: Start accepts. Automaton has 16459 states and 66021 transitions. Word has length 50 [2021-03-10 17:31:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:07,533 INFO L480 AbstractCegarLoop]: Abstraction has 16459 states and 66021 transitions. [2021-03-10 17:31:07,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 16459 states and 66021 transitions. [2021-03-10 17:31:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:31:07,558 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:07,558 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:07,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:31:07,558 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:07,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash 927116112, now seen corresponding path program 1 times [2021-03-10 17:31:07,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:07,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599324520] [2021-03-10 17:31:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:07,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599324520] [2021-03-10 17:31:07,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:07,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:07,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026309078] [2021-03-10 17:31:07,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:07,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:07,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:07,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:07,618 INFO L87 Difference]: Start difference. First operand 16459 states and 66021 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:07,872 INFO L93 Difference]: Finished difference Result 28427 states and 112341 transitions. [2021-03-10 17:31:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-03-10 17:31:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:07,920 INFO L225 Difference]: With dead ends: 28427 [2021-03-10 17:31:07,920 INFO L226 Difference]: Without dead ends: 19915 [2021-03-10 17:31:07,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19915 states. [2021-03-10 17:31:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19915 to 14379. [2021-03-10 17:31:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14379 states, 14378 states have (on average 3.9608429545138404) internal successors, (56949), 14378 states have internal predecessors, (56949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14379 states to 14379 states and 56949 transitions. [2021-03-10 17:31:08,436 INFO L78 Accepts]: Start accepts. Automaton has 14379 states and 56949 transitions. Word has length 50 [2021-03-10 17:31:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:08,436 INFO L480 AbstractCegarLoop]: Abstraction has 14379 states and 56949 transitions. [2021-03-10 17:31:08,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 14379 states and 56949 transitions. [2021-03-10 17:31:08,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 17:31:08,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:08,458 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:08,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:31:08,459 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:08,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1888218171, now seen corresponding path program 1 times [2021-03-10 17:31:08,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:08,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977995004] [2021-03-10 17:31:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:08,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977995004] [2021-03-10 17:31:08,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:08,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:31:08,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325613598] [2021-03-10 17:31:08,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:31:08,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:08,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:31:08,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:31:08,529 INFO L87 Difference]: Start difference. First operand 14379 states and 56949 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:08,676 INFO L93 Difference]: Finished difference Result 20151 states and 79017 transitions. [2021-03-10 17:31:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:31:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-03-10 17:31:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:08,709 INFO L225 Difference]: With dead ends: 20151 [2021-03-10 17:31:08,709 INFO L226 Difference]: Without dead ends: 13815 [2021-03-10 17:31:08,711 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13815 states. [2021-03-10 17:31:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13815 to 13815. [2021-03-10 17:31:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13815 states, 13814 states have (on average 3.9314463587664688) internal successors, (54309), 13814 states have internal predecessors, (54309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 54309 transitions. [2021-03-10 17:31:09,183 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 54309 transitions. Word has length 51 [2021-03-10 17:31:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:09,184 INFO L480 AbstractCegarLoop]: Abstraction has 13815 states and 54309 transitions. [2021-03-10 17:31:09,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 54309 transitions. [2021-03-10 17:31:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:31:09,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:09,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:09,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:31:09,206 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash -752537045, now seen corresponding path program 1 times [2021-03-10 17:31:09,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:09,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677397994] [2021-03-10 17:31:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:09,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677397994] [2021-03-10 17:31:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:09,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:09,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779561346] [2021-03-10 17:31:09,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:09,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:09,273 INFO L87 Difference]: Start difference. First operand 13815 states and 54309 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:09,464 INFO L93 Difference]: Finished difference Result 17433 states and 67317 transitions. [2021-03-10 17:31:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:31:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-03-10 17:31:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:09,492 INFO L225 Difference]: With dead ends: 17433 [2021-03-10 17:31:09,492 INFO L226 Difference]: Without dead ends: 11529 [2021-03-10 17:31:09,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:31:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11529 states. [2021-03-10 17:31:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11529 to 11529. [2021-03-10 17:31:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11529 states, 11528 states have (on average 3.8350971547536434) internal successors, (44211), 11528 states have internal predecessors, (44211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11529 states to 11529 states and 44211 transitions. [2021-03-10 17:31:09,746 INFO L78 Accepts]: Start accepts. Automaton has 11529 states and 44211 transitions. Word has length 52 [2021-03-10 17:31:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:09,747 INFO L480 AbstractCegarLoop]: Abstraction has 11529 states and 44211 transitions. [2021-03-10 17:31:09,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 11529 states and 44211 transitions. [2021-03-10 17:31:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-03-10 17:31:09,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:09,763 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:09,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:31:09,764 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:09,764 INFO L82 PathProgramCache]: Analyzing trace with hash -682141378, now seen corresponding path program 1 times [2021-03-10 17:31:09,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:09,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878631464] [2021-03-10 17:31:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:09,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878631464] [2021-03-10 17:31:09,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:09,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:31:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953726890] [2021-03-10 17:31:09,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:31:09,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:31:09,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:31:09,822 INFO L87 Difference]: Start difference. First operand 11529 states and 44211 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:09,992 INFO L93 Difference]: Finished difference Result 12060 states and 45261 transitions. [2021-03-10 17:31:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:31:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-03-10 17:31:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:10,011 INFO L225 Difference]: With dead ends: 12060 [2021-03-10 17:31:10,011 INFO L226 Difference]: Without dead ends: 7524 [2021-03-10 17:31:10,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7524 states. [2021-03-10 17:31:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7524 to 7524. [2021-03-10 17:31:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7523 states have (on average 3.687890469227702) internal successors, (27744), 7523 states have internal predecessors, (27744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 27744 transitions. [2021-03-10 17:31:10,160 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 27744 transitions. Word has length 53 [2021-03-10 17:31:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:10,160 INFO L480 AbstractCegarLoop]: Abstraction has 7524 states and 27744 transitions. [2021-03-10 17:31:10,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 27744 transitions. [2021-03-10 17:31:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-03-10 17:31:10,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:10,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:10,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 17:31:10,172 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:10,172 INFO L82 PathProgramCache]: Analyzing trace with hash 681898181, now seen corresponding path program 1 times [2021-03-10 17:31:10,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:10,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531582194] [2021-03-10 17:31:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:10,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531582194] [2021-03-10 17:31:10,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:10,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:10,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106938602] [2021-03-10 17:31:10,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:10,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:10,379 INFO L87 Difference]: Start difference. First operand 7524 states and 27744 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:10,472 INFO L93 Difference]: Finished difference Result 11346 states and 41904 transitions. [2021-03-10 17:31:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:31:10,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-03-10 17:31:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:10,488 INFO L225 Difference]: With dead ends: 11346 [2021-03-10 17:31:10,488 INFO L226 Difference]: Without dead ends: 6942 [2021-03-10 17:31:10,488 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 212.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6942 states. [2021-03-10 17:31:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6942 to 6294. [2021-03-10 17:31:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6294 states, 6293 states have (on average 3.6726521531860796) internal successors, (23112), 6293 states have internal predecessors, (23112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 23112 transitions. [2021-03-10 17:31:10,598 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 23112 transitions. Word has length 55 [2021-03-10 17:31:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:10,598 INFO L480 AbstractCegarLoop]: Abstraction has 6294 states and 23112 transitions. [2021-03-10 17:31:10,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 23112 transitions. [2021-03-10 17:31:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-03-10 17:31:10,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:10,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:10,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 17:31:10,606 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:10,607 INFO L82 PathProgramCache]: Analyzing trace with hash 974476185, now seen corresponding path program 2 times [2021-03-10 17:31:10,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:10,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345857282] [2021-03-10 17:31:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:10,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345857282] [2021-03-10 17:31:10,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:10,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 17:31:10,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332361734] [2021-03-10 17:31:10,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 17:31:10,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:10,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 17:31:10,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-10 17:31:10,682 INFO L87 Difference]: Start difference. First operand 6294 states and 23112 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:10,825 INFO L93 Difference]: Finished difference Result 5322 states and 19089 transitions. [2021-03-10 17:31:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 17:31:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-03-10 17:31:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:10,830 INFO L225 Difference]: With dead ends: 5322 [2021-03-10 17:31:10,830 INFO L226 Difference]: Without dead ends: 2118 [2021-03-10 17:31:10,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-03-10 17:31:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-03-10 17:31:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2118. [2021-03-10 17:31:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2117 states have (on average 3.5077940481813887) internal successors, (7426), 2117 states have internal predecessors, (7426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 7426 transitions. [2021-03-10 17:31:10,857 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 7426 transitions. Word has length 55 [2021-03-10 17:31:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:10,857 INFO L480 AbstractCegarLoop]: Abstraction has 2118 states and 7426 transitions. [2021-03-10 17:31:10,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 7426 transitions. [2021-03-10 17:31:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-03-10 17:31:10,860 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:10,861 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:31:10,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 17:31:10,861 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:10,861 INFO L82 PathProgramCache]: Analyzing trace with hash 807494246, now seen corresponding path program 1 times [2021-03-10 17:31:10,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:10,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680357271] [2021-03-10 17:31:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:10,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680357271] [2021-03-10 17:31:10,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:10,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:10,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432490391] [2021-03-10 17:31:10,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:10,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:10,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:10,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:10,939 INFO L87 Difference]: Start difference. First operand 2118 states and 7426 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:10,982 INFO L93 Difference]: Finished difference Result 1956 states and 6832 transitions. [2021-03-10 17:31:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:31:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-03-10 17:31:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:10,982 INFO L225 Difference]: With dead ends: 1956 [2021-03-10 17:31:10,982 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:31:10,982 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:31:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:31:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:31:10,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-03-10 17:31:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:10,983 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:31:10,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:31:10,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:31:10,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 17:31:10,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:31:10 BasicIcfg [2021-03-10 17:31:10,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:31:10,987 INFO L168 Benchmark]: Toolchain (without parser) took 21851.28 ms. Allocated memory was 327.2 MB in the beginning and 11.5 GB in the end (delta: 11.1 GB). Free memory was 289.8 MB in the beginning and 9.2 GB in the end (delta: -8.9 GB). Peak memory consumption was 2.2 GB. Max. memory is 16.0 GB. [2021-03-10 17:31:10,987 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 327.2 MB. Free memory was 308.3 MB in the beginning and 308.2 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:31:10,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.69 ms. Allocated memory is still 327.2 MB. Free memory was 289.1 MB in the beginning and 289.3 MB in the end (delta: -157.0 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:10,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 327.2 MB. Free memory was 289.3 MB in the beginning and 287.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:10,987 INFO L168 Benchmark]: Boogie Preprocessor took 34.12 ms. Allocated memory is still 327.2 MB. Free memory was 287.2 MB in the beginning and 285.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:10,987 INFO L168 Benchmark]: RCFGBuilder took 389.39 ms. Allocated memory is still 327.2 MB. Free memory was 285.1 MB in the beginning and 258.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:10,988 INFO L168 Benchmark]: TraceAbstraction took 20962.92 ms. Allocated memory was 327.2 MB in the beginning and 11.5 GB in the end (delta: 11.1 GB). Free memory was 258.9 MB in the beginning and 9.2 GB in the end (delta: -9.0 GB). Peak memory consumption was 2.2 GB. Max. memory is 16.0 GB. [2021-03-10 17:31:10,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 327.2 MB. Free memory was 308.3 MB in the beginning and 308.2 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 408.69 ms. Allocated memory is still 327.2 MB. Free memory was 289.1 MB in the beginning and 289.3 MB in the end (delta: -157.0 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 327.2 MB. Free memory was 289.3 MB in the beginning and 287.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.12 ms. Allocated memory is still 327.2 MB. Free memory was 287.2 MB in the beginning and 285.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 389.39 ms. Allocated memory is still 327.2 MB. Free memory was 285.1 MB in the beginning and 258.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 20962.92 ms. Allocated memory was 327.2 MB in the beginning and 11.5 GB in the end (delta: 11.1 GB). Free memory was 258.9 MB in the beginning and 9.2 GB in the end (delta: -9.0 GB). Peak memory consumption was 2.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20867.9ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 588.3ms, AutomataDifference: 5897.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5377.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1662 SDtfs, 2637 SDslu, 5624 SDs, 0 SdLazy, 696 SolverSat, 153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 479.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1717.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49019occurred in iteration=0, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7472.6ms AutomataMinimizationTime, 14 MinimizatonAttempts, 42776 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.2ms SsaConstructionTime, 191.8ms SatisfiabilityAnalysisTime, 1112.9ms InterpolantComputationTime, 700 NumberOfCodeBlocks, 700 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 686 ConstructedInterpolants, 0 QuantifiedInterpolants, 2278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...