/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_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:54:58,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:54:58,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:54:58,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:54:58,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:54:58,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:54:58,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:54:58,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:54:58,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:54:58,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:54:58,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:54:58,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:54:58,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:54:58,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:54:58,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:54:58,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:54:58,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:54:58,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:54:58,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:54:58,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:54:58,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:54:58,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:54:58,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:54:58,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:54:58,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:54:58,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:54:58,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:54:58,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:54:58,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:54:58,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:54:58,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:54:58,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:54:58,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:54:58,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:54:58,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:54:58,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:54:58,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:54:58,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:54:58,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:54:58,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:54:58,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:54:58,528 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 16:54:58,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:54:58,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:54:58,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:54:58,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:54:58,577 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:54:58,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:54:58,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:54:58,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:54:58,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:54:58,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:54:58,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:54:58,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:54:58,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:54:58,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:54:58,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:54:58,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:54:58,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:54:58,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:54:58,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:54:58,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:54:58,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:54:58,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:58,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:54:58,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:54:58,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:54:58,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:54:58,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:54:58,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:54:58,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:54:58,583 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 16:54:59,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:54:59,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:54:59,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:54:59,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:54:59,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:54:59,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-09-24 16:54:59,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4afacdc1/a019422364ee4568aa61db0a0bc02799/FLAGdba270159 [2020-09-24 16:54:59,780 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:54:59,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-09-24 16:54:59,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4afacdc1/a019422364ee4568aa61db0a0bc02799/FLAGdba270159 [2020-09-24 16:55:00,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4afacdc1/a019422364ee4568aa61db0a0bc02799 [2020-09-24 16:55:00,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:55:00,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:55:00,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:55:00,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:55:00,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:55:00,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2810e635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00, skipping insertion in model container [2020-09-24 16:55:00,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:55:00,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:55:00,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:55:00,597 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:55:00,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:55:00,755 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:55:00,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00 WrapperNode [2020-09-24 16:55:00,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:55:00,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:55:00,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:55:00,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:55:00,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (1/1) ... [2020-09-24 16:55:00,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:55:00,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:55:00,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:55:00,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:55:00,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (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 16:55:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:55:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:55:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:55:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:55:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:55:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:55:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:55:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:55:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:55:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:55:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:55:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:55:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:55:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:55:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:55:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:55:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:55:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:55:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:55:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:55:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:55:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:55:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:55:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:55:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:55:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:55:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:55:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:55:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:55:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:55:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:55:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:55:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:55:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:55:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:55:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:55:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:55:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:55:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:55:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:55:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:55:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:55:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:55:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:55:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:55:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:55:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:55:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:55:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:55:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:55:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:55:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:55:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:55:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:55:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:55:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:55:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:55:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:55:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:55:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:55:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:55:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 16:55:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:55:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:55:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:55:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:55:02,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:55:02,107 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:55:02,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:02 BoogieIcfgContainer [2020-09-24 16:55:02,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:55:02,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:55:02,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:55:02,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:55:02,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:55:00" (1/3) ... [2020-09-24 16:55:02,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de86795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:02, skipping insertion in model container [2020-09-24 16:55:02,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:00" (2/3) ... [2020-09-24 16:55:02,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de86795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:02, skipping insertion in model container [2020-09-24 16:55:02,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:02" (3/3) ... [2020-09-24 16:55:02,124 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-09-24 16:55:02,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:55:02,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:55:02,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:55:02,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:55:02,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:55:02,202 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:55:02,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:55:02,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:55:02,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:55:02,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:55:02,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:55:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-24 16:55:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:55:02,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:55:02,250 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 16:55:02,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:55:02,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:55:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash -66701350, now seen corresponding path program 1 times [2020-09-24 16:55:02,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:55:02,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939803276] [2020-09-24 16:55:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:55:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:05,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:17,692 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:17,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:55:17,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:55:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15064 [2020-09-24 16:55:17,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:17,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:55:17,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:17,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:55:18,224 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:55:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:55:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:55:18,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 16:55:18,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:55:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,494 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:18,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:18,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:55:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:18,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:18,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:55:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:55:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:55:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:18,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:55:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:18,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:55:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:18,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:55:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:18,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:55:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:18,573 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 16:55:18,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939803276] [2020-09-24 16:55:18,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:55:18,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:55:18,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540206489] [2020-09-24 16:55:18,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:55:18,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:55:18,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:55:18,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:55:18,610 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-09-24 16:55:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:55:20,069 INFO L93 Difference]: Finished difference Result 474 states and 559 transitions. [2020-09-24 16:55:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:55:20,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 16:55:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:55:20,093 INFO L225 Difference]: With dead ends: 474 [2020-09-24 16:55:20,093 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 16:55:20,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:55:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 16:55:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 253. [2020-09-24 16:55:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-24 16:55:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 272 transitions. [2020-09-24 16:55:20,206 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 272 transitions. Word has length 142 [2020-09-24 16:55:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:55:20,207 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 272 transitions. [2020-09-24 16:55:20,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:55:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 272 transitions. [2020-09-24 16:55:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 16:55:20,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:55:20,213 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] [2020-09-24 16:55:20,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:55:20,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:55:20,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:55:20,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2010231336, now seen corresponding path program 1 times [2020-09-24 16:55:20,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:55:20,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445109055] [2020-09-24 16:55:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:55:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking...