/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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:55:20,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:55:20,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:55:20,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:55:20,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:55:20,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:55:20,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:55:20,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:55:20,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:55:20,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:55:20,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:55:20,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:55:20,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:55:20,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:55:20,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:55:20,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:55:20,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:55:20,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:55:20,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:55:20,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:55:20,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:55:20,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:55:20,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:55:20,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:55:20,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:55:20,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:55:20,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:55:20,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:55:20,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:55:20,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:55:20,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:55:20,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:55:20,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:55:20,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:55:20,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:55:20,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:55:20,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:55:20,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:55:20,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:55:20,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:55:20,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:55:20,126 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 16:55:20,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:55:20,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:55:20,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:55:20,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:55:20,157 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:55:20,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:55:20,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:55:20,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:55:20,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:55:20,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:55:20,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:55:20,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:55:20,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:55:20,158 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:55:20,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:55:20,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:55:20,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:55:20,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:55:20,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:55:20,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:55:20,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:55:20,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:55:20,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:55:20,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:55:20,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:55:20,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:55:20,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:55:20,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:55:20,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:55:20,162 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 16:55:20,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:55:20,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:55:20,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:55:20,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:55:20,651 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:55:20,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-09-24 16:55:20,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/683eacd29/4abe79454c824f8ba6f2c8d1251298ca/FLAGdeeff6b3e [2020-09-24 16:55:21,342 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:55:21,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-09-24 16:55:21,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/683eacd29/4abe79454c824f8ba6f2c8d1251298ca/FLAGdeeff6b3e [2020-09-24 16:55:21,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/683eacd29/4abe79454c824f8ba6f2c8d1251298ca [2020-09-24 16:55:21,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:55:21,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:55:21,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:55:21,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:55:21,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:55:21,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:21" (1/1) ... [2020-09-24 16:55:21,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:21, skipping insertion in model container [2020-09-24 16:55:21,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:55:21" (1/1) ... [2020-09-24 16:55:21,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:55:21,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:55:22,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:55:22,093 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:55:22,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:55:22,375 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:55:22,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22 WrapperNode [2020-09-24 16:55:22,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:55:22,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:55:22,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:55:22,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:55:22,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (1/1) ... [2020-09-24 16:55:22,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:55:22,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:55:22,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:55:22,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:55:22,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (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 16:55:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:55:22,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:55:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:55:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:55:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:55:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:55:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:55:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:55:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:55:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:55:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:55:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:55:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:55:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:55:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:55:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:55:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:55:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:55:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 16:55:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:55:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 16:55:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:55:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:55:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:55:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:55:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:55:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:55:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:55:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:55:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:55:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:55:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:55:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:55:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:55:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:55:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:55:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:55:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:55:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:55:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:55:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:55:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:55:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:55:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:55:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:55:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:55:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:55:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:55:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:55:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:55:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:55:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:55:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:55:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:55:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:55:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:55:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:55:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:55:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:55:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:55:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:55:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:55:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:55:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 16:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 16:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:55:23,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:55:23,785 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:55:23,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:23 BoogieIcfgContainer [2020-09-24 16:55:23,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:55:23,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:55:23,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:55:23,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:55:23,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:55:21" (1/3) ... [2020-09-24 16:55:23,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7559229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:23, skipping insertion in model container [2020-09-24 16:55:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:55:22" (2/3) ... [2020-09-24 16:55:23,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7559229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:55:23, skipping insertion in model container [2020-09-24 16:55:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:55:23" (3/3) ... [2020-09-24 16:55:23,802 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-09-24 16:55:23,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:55:23,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:55:23,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:55:23,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:55:23,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:55:23,879 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:55:23,879 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:55:23,879 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:55:23,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:55:23,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:55:23,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:55:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-09-24 16:55:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:55:23,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:55:23,929 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 16:55:23,930 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:55:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:55:23,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2069436890, now seen corresponding path program 1 times [2020-09-24 16:55:23,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:55:23,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708894993] [2020-09-24 16:55:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:55:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:40,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:40,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:55:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:55:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16264 [2020-09-24 16:55:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:55:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:55:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 16:55:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:55:41,016 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:55:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:55:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:55:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 16:55:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 16:55:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:55:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:55:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:55:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:41,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:55:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:55:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:41,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 16:55:41,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:41,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:41,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:55:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:55:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:41,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:55:41,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:55:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:55:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:55:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:41,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:41,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:41,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:41,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:55:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:41,636 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 16:55:41,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708894993] [2020-09-24 16:55:41,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:55:41,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:55:41,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366261571] [2020-09-24 16:55:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:55:41,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:55:41,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:55:41,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:55:41,669 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 4 states. [2020-09-24 16:55:42,258 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:55:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:55:43,570 INFO L93 Difference]: Finished difference Result 506 states and 600 transitions. [2020-09-24 16:55:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:55:43,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 16:55:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:55:43,594 INFO L225 Difference]: With dead ends: 506 [2020-09-24 16:55:43,594 INFO L226 Difference]: Without dead ends: 312 [2020-09-24 16:55:43,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 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 16:55:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-24 16:55:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 268. [2020-09-24 16:55:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 16:55:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions. [2020-09-24 16:55:43,721 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 142 [2020-09-24 16:55:43,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:55:43,722 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 290 transitions. [2020-09-24 16:55:43,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:55:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions. [2020-09-24 16:55:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 16:55:43,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:55:43,728 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] [2020-09-24 16:55:43,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:55:43,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:55:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:55:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 445163065, now seen corresponding path program 1 times [2020-09-24 16:55:43,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:55:43,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024828209] [2020-09-24 16:55:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:55:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking...