/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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:54:47,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:54:47,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:54:47,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:54:47,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:54:47,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:54:47,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:54:47,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:54:47,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:54:47,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:54:47,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:54:47,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:54:47,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:54:47,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:54:47,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:54:47,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:54:47,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:54:47,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:54:47,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:54:47,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:54:47,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:54:47,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:54:47,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:54:47,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:54:47,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:54:47,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:54:47,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:54:47,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:54:47,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:54:47,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:54:47,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:54:47,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:54:48,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:54:48,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:54:48,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:54:48,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:54:48,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:54:48,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:54:48,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:54:48,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:54:48,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:54:48,006 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 16:54:48,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:54:48,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:54:48,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:54:48,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:54:48,035 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:54:48,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:54:48,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:54:48,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:54:48,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:54:48,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:54:48,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:54:48,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:54:48,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:54:48,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:54:48,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:54:48,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:54:48,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:54:48,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:54:48,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:54:48,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:54:48,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:54:48,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:48,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:54:48,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:54:48,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:54:48,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:54:48,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:54:48,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:54:48,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:54:48,040 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 16:54:48,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:54:48,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:54:48,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:54:48,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:54:48,524 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:54:48,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-09-24 16:54:48,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a16be9ea/254ec88a8c4c4bd4b3a13c625592a266/FLAG24fc8de6b [2020-09-24 16:54:49,251 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:54:49,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-09-24 16:54:49,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a16be9ea/254ec88a8c4c4bd4b3a13c625592a266/FLAG24fc8de6b [2020-09-24 16:54:49,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a16be9ea/254ec88a8c4c4bd4b3a13c625592a266 [2020-09-24 16:54:49,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:54:49,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:54:49,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:49,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:54:49,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:54:49,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:49" (1/1) ... [2020-09-24 16:54:49,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d3ce57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:49, skipping insertion in model container [2020-09-24 16:54:49,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:49" (1/1) ... [2020-09-24 16:54:49,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:54:49,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:54:50,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:50,147 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:54:50,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:50,276 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:54:50,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50 WrapperNode [2020-09-24 16:54:50,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:50,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:54:50,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:54:50,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:54:50,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (1/1) ... [2020-09-24 16:54:50,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:54:50,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:54:50,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:54:50,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:54:50,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (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 16:54:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:54:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:54:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:54:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:54:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:54:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:54:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:54:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:54:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:54:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:54:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:54:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:54:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 16:54:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:54:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:54:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:54:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:54:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:54:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:54:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:54:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:54:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:54:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:54:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:54:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:54:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:54:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:54:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:54:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:54:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:54:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:54:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:54:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:54:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:54:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:54:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:54:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:54:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:54:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:54:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:54:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 16:54:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:54:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:54:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:54:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:54:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:54:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:54:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:54:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:54:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:54:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:54:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:54:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:54:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:54:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:54:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:54:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:54:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:54:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:54:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:54:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:54:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:54:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:54:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:54:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:54:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:54:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:54:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:54:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:54:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:54:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:54:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:54:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:54:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:54:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:54:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:54:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:54:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:54:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:54:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:54:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:54:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:54:51,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:54:51,663 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:54:51,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:51 BoogieIcfgContainer [2020-09-24 16:54:51,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:54:51,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:54:51,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:54:51,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:54:51,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:54:49" (1/3) ... [2020-09-24 16:54:51,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18589243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:51, skipping insertion in model container [2020-09-24 16:54:51,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:50" (2/3) ... [2020-09-24 16:54:51,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18589243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:51, skipping insertion in model container [2020-09-24 16:54:51,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:51" (3/3) ... [2020-09-24 16:54:51,681 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-09-24 16:54:51,693 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:54:51,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:54:51,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:54:51,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:54:51,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:54:51,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:54:51,756 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:54:51,756 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:54:51,756 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:54:51,756 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:54:51,756 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:54:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-09-24 16:54:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:54:51,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:51,802 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 16:54:51,802 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash 391863934, now seen corresponding path program 1 times [2020-09-24 16:54:51,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:51,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826530614] [2020-09-24 16:54:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:10,260 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:10,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:55:10,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:55:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18120 [2020-09-24 16:55:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:55:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 16:55:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 16:55:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:55:10,851 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:55:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:55:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:55:11,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-24 16:55:11,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 16:55:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:55:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,244 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:11,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:55:11,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:11,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:55:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:11,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:55:11,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:55:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:55:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:55:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:55:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:11,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:55:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:11,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:55:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:11,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:55:11,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:55:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:55:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:11,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:11,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:11,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:11,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:11,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:55:11,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:55:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:55:11,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:11,389 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 16:55:11,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826530614] [2020-09-24 16:55:11,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:55:11,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:55:11,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191212110] [2020-09-24 16:55:11,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:55:11,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:55:11,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:55:11,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:55:11,431 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 8 states. [2020-09-24 16:55:12,057 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:55:13,293 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:55:13,570 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:55:13,918 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:55:14,338 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:55:14,653 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:55:15,293 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:55:15,577 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:55:15,965 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:55:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:55:17,099 INFO L93 Difference]: Finished difference Result 559 states and 699 transitions. [2020-09-24 16:55:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:55:17,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 16:55:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:55:17,130 INFO L225 Difference]: With dead ends: 559 [2020-09-24 16:55:17,130 INFO L226 Difference]: Without dead ends: 379 [2020-09-24 16:55:17,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:55:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-09-24 16:55:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 334. [2020-09-24 16:55:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-09-24 16:55:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 382 transitions. [2020-09-24 16:55:17,272 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 382 transitions. Word has length 142 [2020-09-24 16:55:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:55:17,273 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 382 transitions. [2020-09-24 16:55:17,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:55:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 382 transitions. [2020-09-24 16:55:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 16:55:17,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:55:17,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:55:17,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:55:17,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:55:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:55:17,281 INFO L82 PathProgramCache]: Analyzing trace with hash 819044080, now seen corresponding path program 1 times [2020-09-24 16:55:17,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:55:17,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487248259] [2020-09-24 16:55:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:55:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:18,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking...