/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_spec3_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:51:28,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:51:28,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:51:28,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:51:28,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:51:28,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:51:28,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:51:28,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:51:28,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:51:28,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:51:28,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:51:28,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:51:28,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:51:28,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:51:28,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:51:28,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:51:28,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:51:28,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:51:28,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:51:28,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:51:28,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:51:28,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:51:28,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:51:28,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:51:28,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:51:28,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:51:28,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:51:28,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:51:28,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:51:28,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:51:28,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:51:28,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:51:28,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:51:28,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:51:28,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:51:28,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:51:28,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:51:28,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:51:28,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:51:28,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:51:28,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:51:28,492 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 16:51:28,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:51:28,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:51:28,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:51:28,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:51:28,521 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:51:28,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:51:28,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:51:28,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:51:28,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:51:28,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:51:28,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:51:28,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:51:28,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:51:28,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:51:28,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:51:28,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:51:28,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:51:28,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:51:28,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:51:28,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:51:28,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:51:28,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:51:28,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:51:28,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:51:28,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:51:28,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:51:28,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:51:28,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:51:28,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:51:28,526 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 16:51:29,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:51:29,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:51:29,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:51:29,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:51:29,053 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:51:29,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-09-24 16:51:29,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f579f287/ee0e66829f7a4c5fb1b14d7445d405a2/FLAG88121f7f2 [2020-09-24 16:51:29,793 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:51:29,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-09-24 16:51:29,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f579f287/ee0e66829f7a4c5fb1b14d7445d405a2/FLAG88121f7f2 [2020-09-24 16:51:29,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f579f287/ee0e66829f7a4c5fb1b14d7445d405a2 [2020-09-24 16:51:30,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:51:30,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:51:30,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:51:30,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:51:30,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:51:30,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:29" (1/1) ... [2020-09-24 16:51:30,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30, skipping insertion in model container [2020-09-24 16:51:30,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:29" (1/1) ... [2020-09-24 16:51:30,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:51:30,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:51:30,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:51:30,620 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:51:30,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:51:30,745 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:51:30,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30 WrapperNode [2020-09-24 16:51:30,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:51:30,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:51:30,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:51:30,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:51:30,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (1/1) ... [2020-09-24 16:51:30,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:51:30,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:51:30,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:51:30,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:51:30,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (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 16:51:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:51:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:51:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:51:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:51:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:51:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:51:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:51:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:51:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:51:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:51:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:51:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:51:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:51:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:51:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:51:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:51:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:51:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:51:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:51:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:51:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:51:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:51:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:51:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:51:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:51:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:51:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:51:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:51:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:51:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:51:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:51:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 16:51:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:51:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:51:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:51:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:51:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:51:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:51:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:51:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:51:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:51:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:51:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:51:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:51:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:51:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:51:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:51:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:51:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:51:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:51:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:51:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:51:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:51:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:51:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:51:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:51:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:51:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:51:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:51:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:51:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:51:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:51:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 16:51:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:51:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:51:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:51:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:51:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:51:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:51:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:51:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:51:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:51:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:51:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:51:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:51:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:51:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:51:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:51:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:51:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:51:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:51:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:51:32,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:51:32,059 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:51:32,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:32 BoogieIcfgContainer [2020-09-24 16:51:32,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:51:32,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:51:32,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:51:32,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:51:32,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:51:29" (1/3) ... [2020-09-24 16:51:32,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb3bc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:32, skipping insertion in model container [2020-09-24 16:51:32,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:30" (2/3) ... [2020-09-24 16:51:32,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb3bc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:32, skipping insertion in model container [2020-09-24 16:51:32,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:32" (3/3) ... [2020-09-24 16:51:32,076 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-09-24 16:51:32,087 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:51:32,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:51:32,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:51:32,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:51:32,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:51:32,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:51:32,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:51:32,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:51:32,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:51:32,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:51:32,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:51:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-09-24 16:51:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 16:51:32,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:51:32,201 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] [2020-09-24 16:51:32,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:51:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:51:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 396628182, now seen corresponding path program 1 times [2020-09-24 16:51:32,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:51:32,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489092565] [2020-09-24 16:51:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:51:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:38,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:38,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 16:51:38,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:51:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5891 [2020-09-24 16:51:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:51:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:51:38,924 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:51:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:51:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:51:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 16:51:39,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:51:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:51:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:39,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:39,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:51:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,206 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:39,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:39,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:39,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:51:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:39,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:51:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:51:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:39,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:39,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 16:51:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:39,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:51:39,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 16:51:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:39,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:39,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 16:51:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:39,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:39,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:39,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:39,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:39,335 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 16:51:39,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489092565] [2020-09-24 16:51:39,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:51:39,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:51:39,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146451541] [2020-09-24 16:51:39,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:51:39,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:51:39,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:51:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:51:39,381 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2020-09-24 16:51:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:51:41,005 INFO L93 Difference]: Finished difference Result 512 states and 611 transitions. [2020-09-24 16:51:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:51:41,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 16:51:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:51:41,030 INFO L225 Difference]: With dead ends: 512 [2020-09-24 16:51:41,031 INFO L226 Difference]: Without dead ends: 315 [2020-09-24 16:51:41,042 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 [2020-09-24 16:51:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-24 16:51:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 271. [2020-09-24 16:51:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 16:51:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 296 transitions. [2020-09-24 16:51:41,194 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 296 transitions. Word has length 153 [2020-09-24 16:51:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:51:41,195 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 296 transitions. [2020-09-24 16:51:41,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:51:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 296 transitions. [2020-09-24 16:51:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 16:51:41,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:51:41,201 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] [2020-09-24 16:51:41,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:51:41,202 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:51:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:51:41,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1765968117, now seen corresponding path program 1 times [2020-09-24 16:51:41,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:51:41,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396418138] [2020-09-24 16:51:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:51:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 16:51:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:51:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6945 [2020-09-24 16:51:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 16:51:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 16:51:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:48,545 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:51:48,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:51:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,672 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:51:48,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 16:51:48,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:51:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:48,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:48,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:48,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:51:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:51:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,725 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:48,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:51:48,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:51:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 16:51:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,742 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:48,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 16:51:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,752 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:48,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:48,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 16:51:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:48,760 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:48,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:48,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:48,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:48,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:48,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:51:48,802 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 16:51:48,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396418138] [2020-09-24 16:51:48,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:51:48,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:51:48,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345535642] [2020-09-24 16:51:48,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:51:48,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:51:48,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:51:48,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:51:48,812 INFO L87 Difference]: Start difference. First operand 271 states and 296 transitions. Second operand 4 states. [2020-09-24 16:51:49,527 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:51:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:51:50,590 INFO L93 Difference]: Finished difference Result 419 states and 474 transitions. [2020-09-24 16:51:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:51:50,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 16:51:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:51:50,595 INFO L225 Difference]: With dead ends: 419 [2020-09-24 16:51:50,595 INFO L226 Difference]: Without dead ends: 298 [2020-09-24 16:51:50,596 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 [2020-09-24 16:51:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-24 16:51:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-09-24 16:51:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-24 16:51:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2020-09-24 16:51:50,669 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 154 [2020-09-24 16:51:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:51:50,672 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2020-09-24 16:51:50,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:51:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2020-09-24 16:51:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 16:51:50,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:51:50,677 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] [2020-09-24 16:51:50,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:51:50,678 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:51:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:51:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash 308056419, now seen corresponding path program 1 times [2020-09-24 16:51:50,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:51:50,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125101931] [2020-09-24 16:51:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:51:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:53,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 16:51:53,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 16:51:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2727 [2020-09-24 16:51:53,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:51:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:51:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 16:51:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:53,800 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:51:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:51:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:51:54,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 16:51:54,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:51:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:51:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:51:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:51:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:54,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:51:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:51:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:54,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:51:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:51:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:51:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:51:54,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:54,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:51:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 16:51:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:51:54,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:51:54,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:51:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 16:51:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:51:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:51:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:51:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 16:51:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:54,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:51:54,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:51:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:51:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:51:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 16:51:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:54,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:51:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:51:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:51:54,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:51:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:51:54,254 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 16:51:54,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125101931] [2020-09-24 16:51:54,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:51:54,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:51:54,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830638165] [2020-09-24 16:51:54,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:51:54,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:51:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:51:54,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:51:54,258 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand 9 states. [2020-09-24 16:51:54,976 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:51:56,730 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:51:57,182 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:51:57,541 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:51:57,882 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:51:58,206 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:51:58,566 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:51:58,877 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:52:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:00,055 INFO L93 Difference]: Finished difference Result 637 states and 761 transitions. [2020-09-24 16:52:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:52:00,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-09-24 16:52:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:00,063 INFO L225 Difference]: With dead ends: 637 [2020-09-24 16:52:00,063 INFO L226 Difference]: Without dead ends: 486 [2020-09-24 16:52:00,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:52:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-09-24 16:52:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 404. [2020-09-24 16:52:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-09-24 16:52:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 452 transitions. [2020-09-24 16:52:00,123 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 452 transitions. Word has length 167 [2020-09-24 16:52:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:00,124 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 452 transitions. [2020-09-24 16:52:00,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:52:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 452 transitions. [2020-09-24 16:52:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 16:52:00,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:00,128 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] [2020-09-24 16:52:00,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:52:00,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1742944392, now seen corresponding path program 1 times [2020-09-24 16:52:00,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:00,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343703985] [2020-09-24 16:52:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:17,641 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17466 [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 16:52:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:17,942 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 16:52:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 16:52:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:18,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:18,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:18,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:52:18,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:18,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:18,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 16:52:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:52:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:18,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:52:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:52:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,272 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:52:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:52:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 16:52:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:18,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:18,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 16:52:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:18,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:52:18,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 16:52:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:18,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:18,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:52:18,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:18,328 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 16:52:18,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343703985] [2020-09-24 16:52:18,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:18,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:52:18,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803020832] [2020-09-24 16:52:18,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:52:18,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:18,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:52:18,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:52:18,330 INFO L87 Difference]: Start difference. First operand 404 states and 452 transitions. Second operand 6 states. [2020-09-24 16:52:18,855 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186