/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:43:43,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:43:43,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:43:43,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:43:43,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:43:43,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:43:43,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:43:43,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:43:43,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:43:43,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:43:43,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:43:43,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:43:43,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:43:43,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:43:43,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:43:43,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:43:43,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:43:43,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:43:43,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:43:43,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:43:43,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:43:43,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:43:43,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:43:43,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:43:43,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:43:43,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:43:43,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:43:43,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:43:43,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:43:43,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:43:43,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:43:43,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:43:43,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:43:43,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:43:43,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:43:43,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:43:43,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:43:43,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:43:43,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:43:43,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:43:43,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:43:43,582 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 [2020-09-24 16:43:43,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:43:43,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:43:43,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:43:43,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:43:43,617 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:43:43,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:43:43,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:43:43,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:43:43,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:43:43,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:43:43,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:43:43,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:43:43,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:43:43,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:43:43,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:43:43,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:43:43,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:43:43,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:43:43,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:43:43,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:43:43,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:43:43,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:43:43,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:43:43,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:43:43,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:43:43,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:43:43,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:43:43,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:43:43,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:43:43,626 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.rcfgbuilder: Size of a code block -> SingleStatement 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;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;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;log-additional-information=true; [2020-09-24 16:43:44,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:43:44,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:43:44,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:43:44,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:43:44,127 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:43:44,128 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-09-24 16:43:44,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50537a0e/84d6388d614a4810b33d690b8975e558/FLAG7512bdca9 [2020-09-24 16:43:44,761 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:43:44,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-09-24 16:43:44,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50537a0e/84d6388d614a4810b33d690b8975e558/FLAG7512bdca9 [2020-09-24 16:43:45,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50537a0e/84d6388d614a4810b33d690b8975e558 [2020-09-24 16:43:45,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:43:45,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:43:45,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:43:45,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:43:45,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:43:45,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45, skipping insertion in model container [2020-09-24 16:43:45,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:43:45,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:43:45,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:43:45,599 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:43:45,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:43:45,722 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:43:45,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45 WrapperNode [2020-09-24 16:43:45,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:43:45,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:43:45,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:43:45,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:43:45,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (1/1) ... [2020-09-24 16:43:45,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:43:45,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:43:45,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:43:45,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:43:45,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (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 [2020-09-24 16:43:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:43:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:43:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:43:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:43:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:43:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:43:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:43:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:43:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:43:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:43:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:43:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:43:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:43:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:43:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:43:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:43:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:43:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:43:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:43:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:43:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:43:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:43:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:43:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:43:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:43:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:43:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:43:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:43:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:43:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:43:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:43:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:43:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:43:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:43:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:43:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:43:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:43:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:43:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:43:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:43:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:43:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:43:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:43:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:43:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:43:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:43:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:43:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:43:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:43:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:43:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:43:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:43:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:43:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:43:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:43:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:43:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:43:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:43:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:43:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:43:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:43:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:43:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:43:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:43:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:43:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:43:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:43:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:43:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:43:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:43:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:43:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:43:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:43:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:43:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:43:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:43:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:43:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:43:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:43:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:43:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:43:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:43:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:43:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:43:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:43:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:43:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:43:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:43:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:43:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:43:47,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:43:47,288 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:43:47,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:43:47 BoogieIcfgContainer [2020-09-24 16:43:47,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:43:47,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:43:47,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:43:47,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:43:47,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:43:45" (1/3) ... [2020-09-24 16:43:47,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4760d1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:43:47, skipping insertion in model container [2020-09-24 16:43:47,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:45" (2/3) ... [2020-09-24 16:43:47,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4760d1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:43:47, skipping insertion in model container [2020-09-24 16:43:47,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:43:47" (3/3) ... [2020-09-24 16:43:47,311 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-09-24 16:43:47,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:43:47,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:43:47,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:43:47,389 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:43:47,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:43:47,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:43:47,390 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:43:47,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:43:47,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:43:47,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:43:47,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:43:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states. [2020-09-24 16:43:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:43:47,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:43:47,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:43:47,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:43:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:43:47,445 INFO L82 PathProgramCache]: Analyzing trace with hash -382472662, now seen corresponding path program 1 times [2020-09-24 16:43:47,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:43:47,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602230442] [2020-09-24 16:43:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:43:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:07,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:44:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:44:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19534 [2020-09-24 16:44:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:44:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 16:44:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 16:44:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:07,806 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:44:07,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:44:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:44:08,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 16:44:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 16:44:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:44:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:08,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:44:08,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:44:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,314 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:08,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 16:44:08,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:08,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:44:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:44:08,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:44:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,343 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:44:08,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:44:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:08,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:44:08,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:44:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:08,428 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:08,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:08,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:44:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:44:08,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602230442] [2020-09-24 16:44:08,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:44:08,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:44:08,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990011972] [2020-09-24 16:44:08,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:44:08,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:44:08,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:44:08,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:44:08,528 INFO L87 Difference]: Start difference. First operand 301 states. Second operand 8 states. [2020-09-24 16:44:09,212 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:44:10,602 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-24 16:44:11,237 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-24 16:44:11,635 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:12,028 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:44:12,345 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:12,993 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:44:13,346 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 16:44:13,982 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:44:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:44:15,437 INFO L93 Difference]: Finished difference Result 627 states and 767 transitions. [2020-09-24 16:44:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:44:15,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 16:44:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:44:15,464 INFO L225 Difference]: With dead ends: 627 [2020-09-24 16:44:15,465 INFO L226 Difference]: Without dead ends: 420 [2020-09-24 16:44:15,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:44:15,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-09-24 16:44:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 365. [2020-09-24 16:44:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-09-24 16:44:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 405 transitions. [2020-09-24 16:44:15,612 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 405 transitions. Word has length 142 [2020-09-24 16:44:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:44:15,613 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 405 transitions. [2020-09-24 16:44:15,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:44:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 405 transitions. [2020-09-24 16:44:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 16:44:15,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:15,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:44:15,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:44:15,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1429218129, now seen corresponding path program 1 times [2020-09-24 16:44:15,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:15,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999756966] [2020-09-24 16:44:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:16,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 16:44:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:44:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3429 [2020-09-24 16:44:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:44:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 16:44:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 16:44:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:19,419 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:44:19,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:44:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:44:19,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 16:44:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 16:44:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:44:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:19,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:44:19,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:44:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:19,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:19,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:19,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:44:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:44:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:44:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:19,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:19,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:19,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:44:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:44:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:44:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:44:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 16:44:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:19,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:44:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 16:44:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:19,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:19,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:19,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:44:19,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:19,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:44:19,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999756966] [2020-09-24 16:44:19,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:44:19,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:44:19,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50263050] [2020-09-24 16:44:19,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:44:19,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:44:19,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:44:19,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:44:19,840 INFO L87 Difference]: Start difference. First operand 365 states and 405 transitions. Second operand 9 states. [2020-09-24 16:44:20,515 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:44:22,112 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-24 16:44:22,699 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-24 16:44:23,053 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:23,394 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:44:23,709 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:24,474 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:44:24,794 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 16:44:25,175 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:44:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:44:26,823 INFO L93 Difference]: Finished difference Result 899 states and 1115 transitions. [2020-09-24 16:44:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:44:26,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2020-09-24 16:44:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:44:26,833 INFO L225 Difference]: With dead ends: 899 [2020-09-24 16:44:26,833 INFO L226 Difference]: Without dead ends: 644 [2020-09-24 16:44:26,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-09-24 16:44:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-09-24 16:44:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 527. [2020-09-24 16:44:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-09-24 16:44:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 605 transitions. [2020-09-24 16:44:26,956 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 605 transitions. Word has length 157 [2020-09-24 16:44:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:44:26,957 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 605 transitions. [2020-09-24 16:44:26,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:44:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 605 transitions. [2020-09-24 16:44:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 16:44:26,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:26,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:44:26,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:44:26,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash -441390253, now seen corresponding path program 1 times [2020-09-24 16:44:26,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:26,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301866926] [2020-09-24 16:44:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:27,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:27,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 16:44:27,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-09-24 16:44:27,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-24 16:44:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:44:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:27,965 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:44:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:44:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:44:28,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 16:44:28,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:44:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:44:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:28,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:28,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:44:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:44:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:44:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:28,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:28,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:44:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:44:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:44:28,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 16:44:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,252 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:44:28,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 16:44:28,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:44:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:44:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 16:44:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,321 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:44:28,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 16:44:28,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:44:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:44:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 16:44:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 16:44:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 16:44:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 16:44:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:44:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:44:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,413 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:44:28,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:44:28,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:44:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 16:44:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:44:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:44:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:44:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:28,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-24 16:44:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:44:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-24 16:44:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:44:28,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:44:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:44:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:44:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:44:28,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301866926] [2020-09-24 16:44:28,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:44:28,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:44:28,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348092067] [2020-09-24 16:44:28,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:44:28,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:44:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:44:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:44:28,535 INFO L87 Difference]: Start difference. First operand 527 states and 605 transitions. Second operand 9 states. [2020-09-24 16:44:29,920 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:44:30,151 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:44:30,442 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:30,780 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 16:44:31,060 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:44:32,192 INFO L93 Difference]: Finished difference Result 1153 states and 1483 transitions. [2020-09-24 16:44:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:44:32,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-09-24 16:44:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:44:32,203 INFO L225 Difference]: With dead ends: 1153 [2020-09-24 16:44:32,203 INFO L226 Difference]: Without dead ends: 736 [2020-09-24 16:44:32,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:44:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-09-24 16:44:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 539. [2020-09-24 16:44:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-24 16:44:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 617 transitions. [2020-09-24 16:44:32,316 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 617 transitions. Word has length 195 [2020-09-24 16:44:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:44:32,317 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 617 transitions. [2020-09-24 16:44:32,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:44:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 617 transitions. [2020-09-24 16:44:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 16:44:32,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:32,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:44:32,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:44:32,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash 532479923, now seen corresponding path program 1 times [2020-09-24 16:44:32,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:32,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783661210] [2020-09-24 16:44:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:33,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:33,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 16:44:33,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-09-24 16:44:33,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:44:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-09-24 16:44:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:44:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:33,462 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:44:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:44:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking...