/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:10:06,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:10:06,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:10:06,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:10:06,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:10:06,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:10:06,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:10:06,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:10:06,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:10:06,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:10:06,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:10:06,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:10:06,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:10:06,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:10:06,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:10:06,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:10:06,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:10:06,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:10:06,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:10:06,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:10:06,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:10:06,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:10:06,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:10:06,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:10:06,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:10:06,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:10:06,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:10:06,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:10:06,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:10:06,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:10:06,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:10:06,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:10:06,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:10:06,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:10:06,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:10:06,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:10:06,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:10:06,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:10:06,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:10:06,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:10:06,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:10:06,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:10:06,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:10:06,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:10:06,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:10:06,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:10:06,624 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:10:06,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:10:06,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:10:06,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:10:06,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:10:06,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:10:06,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:10:06,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:10:06,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:10:06,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:10:06,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:10:06,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:10:06,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:10:06,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:10:06,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:10:06,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:10:06,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:10:06,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:06,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:10:06,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:10:06,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:10:06,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:10:06,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:10:06,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:10:06,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:10:06,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:10:07,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:10:07,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:10:07,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:10:07,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:10:07,136 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:10:07,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-09-21 11:10:07,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/965e0154d/553a0ede3fdb43c59ec30ab234fb1fd5/FLAGa29b1105e [2020-09-21 11:10:07,825 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:10:07,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-09-21 11:10:07,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/965e0154d/553a0ede3fdb43c59ec30ab234fb1fd5/FLAGa29b1105e [2020-09-21 11:10:08,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/965e0154d/553a0ede3fdb43c59ec30ab234fb1fd5 [2020-09-21 11:10:08,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:10:08,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:10:08,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:08,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:10:08,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:10:08,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08, skipping insertion in model container [2020-09-21 11:10:08,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:10:08,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:10:08,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:08,558 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:10:08,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:08,807 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:10:08,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08 WrapperNode [2020-09-21 11:10:08,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:08,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:10:08,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:10:08,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:10:08,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... [2020-09-21 11:10:08,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:10:08,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:10:08,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:10:08,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:10:08,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:10:09,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:10:09,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:09,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:09,014 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:10:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:10:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:10:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:10:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:10:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:10:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:10:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:10:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:10:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:10:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:10:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:10:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:10:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:10:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:10:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:10:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:10:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 11:10:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:10:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 11:10:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:10:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:10:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:10:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:10:09,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:10:09,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:10:09,021 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:10:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:10:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:10:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:10:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:10:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:10:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:10:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:10:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:10:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:10:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:10:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:10:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:10:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:10:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:10:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:10:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:10:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:10:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:10:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:10:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:10:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:10:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:10:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:10:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:10:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:10:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:10:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:10:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:10:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:10:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:10:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:10:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:10:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:10:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:10:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:10:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:10:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:10:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 11:10:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:10:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 11:10:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:10:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:10:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:10,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:10,304 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:10,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:10 BoogieIcfgContainer [2020-09-21 11:10:10,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:10,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:10,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:10,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:10,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:10:08" (1/3) ... [2020-09-21 11:10:10,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573afffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:10, skipping insertion in model container [2020-09-21 11:10:10,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:08" (2/3) ... [2020-09-21 11:10:10,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573afffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:10, skipping insertion in model container [2020-09-21 11:10:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:10" (3/3) ... [2020-09-21 11:10:10,320 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c [2020-09-21 11:10:10,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:10,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:10,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:10,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:10,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:10,398 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:10,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:10,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:10,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:10,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:10,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-09-21 11:10:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:10,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:10,442 INFO L422 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] [2020-09-21 11:10:10,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -720125183, now seen corresponding path program 1 times [2020-09-21 11:10:10,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:10,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134583688] [2020-09-21 11:10:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,769 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,769 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,770 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,770 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:10,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:10:10,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,226 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,244 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,245 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,245 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,245 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,315 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,322 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,323 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:11,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,329 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:11,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,337 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:11,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,346 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:11,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,354 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,354 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:11,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:11,362 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:11,362 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:11,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:11,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:11,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:11,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:10:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:11,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134583688] [2020-09-21 11:10:11,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:11,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:11,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677057075] [2020-09-21 11:10:11,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:11,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:11,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:11,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:11,424 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-09-21 11:10:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:12,639 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-09-21 11:10:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:12,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:12,670 INFO L225 Difference]: With dead ends: 291 [2020-09-21 11:10:12,671 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 11:10:12,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 11:10:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-09-21 11:10:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 11:10:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-09-21 11:10:12,863 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-09-21 11:10:12,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:12,863 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-09-21 11:10:12,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-09-21 11:10:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:12,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:12,876 INFO L422 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] [2020-09-21 11:10:12,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:12,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1479231386, now seen corresponding path program 1 times [2020-09-21 11:10:12,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:12,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604543038] [2020-09-21 11:10:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:12,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:12,988 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:12,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:10:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,374 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:13,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:10:13,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,478 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,479 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,488 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,488 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,488 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,493 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,504 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,504 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,511 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,511 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,511 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:13,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604543038] [2020-09-21 11:10:13,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:13,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:13,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805490420] [2020-09-21 11:10:13,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:13,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:13,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:13,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:13,524 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-09-21 11:10:13,996 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:14,815 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-09-21 11:10:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:14,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:14,818 INFO L225 Difference]: With dead ends: 224 [2020-09-21 11:10:14,819 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 11:10:14,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 11:10:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-09-21 11:10:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-21 11:10:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-09-21 11:10:14,858 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-09-21 11:10:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:14,858 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-09-21 11:10:14,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-09-21 11:10:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:10:14,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:14,860 INFO L422 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] [2020-09-21 11:10:14,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:14,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:14,861 INFO L82 PathProgramCache]: Analyzing trace with hash -162444823, now seen corresponding path program 1 times [2020-09-21 11:10:14,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:14,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668189128] [2020-09-21 11:10:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:14,985 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:14,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:14,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:14,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:14,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:10:14,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 11:10:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 11:10:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,326 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,394 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,394 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,394 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:10:15,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,437 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,437 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:15,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,450 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,450 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,450 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,450 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:15,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,458 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,458 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,458 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:10:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,463 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,464 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,464 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:15,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668189128] [2020-09-21 11:10:15,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:15,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:15,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464615220] [2020-09-21 11:10:15,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:15,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:15,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:15,488 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-09-21 11:10:15,823 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:16,734 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-09-21 11:10:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:16,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-21 11:10:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:16,738 INFO L225 Difference]: With dead ends: 233 [2020-09-21 11:10:16,738 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 11:10:16,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 11:10:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-09-21 11:10:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-21 11:10:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-09-21 11:10:16,772 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-09-21 11:10:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:16,772 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-09-21 11:10:16,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-09-21 11:10:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 11:10:16,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:16,774 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:16,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:16,774 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash -524642989, now seen corresponding path program 1 times [2020-09-21 11:10:16,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:16,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105550110] [2020-09-21 11:10:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 11:10:17,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-21 11:10:17,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:10:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,656 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,726 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 11:10:17,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,764 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,764 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,764 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,769 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,769 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,769 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,776 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,776 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,776 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,776 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,782 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,782 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:10:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,804 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,804 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:17,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:10:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,810 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,816 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,816 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 11:10:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 11:10:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,831 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,831 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,831 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,832 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:17,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 11:10:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,847 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,847 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,848 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:17,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105550110] [2020-09-21 11:10:17,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:17,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:17,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351362210] [2020-09-21 11:10:17,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:17,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:17,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:17,864 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-09-21 11:10:18,327 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:20,079 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:20,449 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:20,806 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:21,227 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:21,730 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-09-21 11:10:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:21,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-21 11:10:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:21,735 INFO L225 Difference]: With dead ends: 348 [2020-09-21 11:10:21,735 INFO L226 Difference]: Without dead ends: 256 [2020-09-21 11:10:21,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-21 11:10:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-09-21 11:10:21,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-21 11:10:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-09-21 11:10:21,799 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-09-21 11:10:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:21,800 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-09-21 11:10:21,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-09-21 11:10:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 11:10:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:21,803 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:21,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:21,803 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:21,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash 691700877, now seen corresponding path program 1 times [2020-09-21 11:10:21,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:21,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15044523] [2020-09-21 11:10:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,163 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-21 11:10:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-21 11:10:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:10:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:10:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,456 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,524 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,524 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,524 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 11:10:22,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,560 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,561 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,561 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,566 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,566 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,567 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,567 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,572 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,572 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,578 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 11:10:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,598 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,598 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,598 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,614 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,615 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,615 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,615 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:22,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:10:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:22,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,627 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,627 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,627 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,628 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-21 11:10:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,634 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,634 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,634 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,635 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 11:10:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,639 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,639 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,640 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,640 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 11:10:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,644 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,645 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,645 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:22,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15044523] [2020-09-21 11:10:22,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:22,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:10:22,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31372818] [2020-09-21 11:10:22,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:10:22,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:22,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:10:22,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:10:22,662 INFO L87 Difference]: Start difference. First operand 208 states and 250 transitions. Second operand 6 states. [2020-09-21 11:10:23,020 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:23,638 INFO L93 Difference]: Finished difference Result 331 states and 413 transitions. [2020-09-21 11:10:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:10:23,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-09-21 11:10:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:23,640 INFO L225 Difference]: With dead ends: 331 [2020-09-21 11:10:23,640 INFO L226 Difference]: Without dead ends: 147 [2020-09-21 11:10:23,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:10:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-21 11:10:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2020-09-21 11:10:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-21 11:10:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2020-09-21 11:10:23,695 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 74 [2020-09-21 11:10:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:23,696 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2020-09-21 11:10:23,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:10:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2020-09-21 11:10:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 11:10:23,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:23,697 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:23,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:23,698 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:23,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash 35008173, now seen corresponding path program 1 times [2020-09-21 11:10:23,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:23,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102489320] [2020-09-21 11:10:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:23,767 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:23,767 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:23,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:10:23,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:23 BoogieIcfgContainer [2020-09-21 11:10:23,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:23,805 INFO L168 Benchmark]: Toolchain (without parser) took 15718.76 ms. Allocated memory was 146.8 MB in the beginning and 491.8 MB in the end (delta: 345.0 MB). Free memory was 102.0 MB in the beginning and 426.6 MB in the end (delta: -324.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:23,806 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:10:23,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.86 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 173.3 MB in the end (delta: -72.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:23,807 INFO L168 Benchmark]: Boogie Preprocessor took 99.84 ms. Allocated memory is still 203.4 MB. Free memory was 173.3 MB in the beginning and 169.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:23,808 INFO L168 Benchmark]: RCFGBuilder took 1401.51 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 198.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:23,809 INFO L168 Benchmark]: TraceAbstraction took 13490.44 ms. Allocated memory was 236.5 MB in the beginning and 491.8 MB in the end (delta: 255.3 MB). Free memory was 198.4 MB in the beginning and 426.6 MB in the end (delta: -228.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:23,813 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.86 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 173.3 MB in the end (delta: -72.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.84 ms. Allocated memory is still 203.4 MB. Free memory was 173.3 MB in the beginning and 169.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1401.51 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 198.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13490.44 ms. Allocated memory was 236.5 MB in the beginning and 491.8 MB in the end (delta: 255.3 MB). Free memory was 198.4 MB in the beginning and 426.6 MB in the end (delta: -228.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 580]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L83] int waterLevel = 1; [L84] int methaneLevelCritical = 0; [L341] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L567] int retValue_acc ; [L570] retValue_acc = 1 [L571] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L882] int splverifierCounter ; [L883] int tmp ; [L884] int tmp___0 ; [L885] int tmp___1 ; [L886] int tmp___2 ; [L889] splverifierCounter = 0 [L891] COND TRUE 1 [L893] COND TRUE splverifierCounter < 4 [L899] tmp = __VERIFIER_nondet_int() [L901] COND TRUE \read(tmp) [L903] CALL waterRise() [L101] COND TRUE waterLevel < 2 [L102] waterLevel = waterLevel + 1 [L903] RET waterRise() [L909] tmp___0 = __VERIFIER_nondet_int() [L911] COND FALSE !(\read(tmp___0)) [L919] tmp___2 = __VERIFIER_nondet_int() [L921] COND TRUE \read(tmp___2) [L934] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L748] int tmp ; [L751] COND FALSE !(\read(pumpRunning)) [L766] CALL processEnvironment__wrappee__methaneQuery() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L766] RET processEnvironment__wrappee__methaneQuery() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L122] int retValue_acc ; [L125] retValue_acc = methaneLevelCritical [L126] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L154] int retValue_acc ; [L157] retValue_acc = waterLevel [L158] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L817] int retValue_acc ; [L820] retValue_acc = pumpRunning [L821] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L580] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 506 SDtfs, 689 SDslu, 210 SDs, 0 SdLazy, 1143 SolverSat, 413 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 142 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 85412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 incorrect! Received shutdown request...