/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:03:57,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:03:57,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:03:57,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:03:57,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:03:57,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:03:57,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:03:57,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:03:57,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:03:57,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:03:57,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:03:57,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:03:57,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:03:57,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:03:57,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:03:57,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:03:57,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:03:57,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:03:57,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:03:57,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:03:57,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:03:57,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:03:57,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:03:57,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:03:57,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:03:57,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:03:57,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:03:57,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:03:57,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:03:57,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:03:57,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:03:57,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:03:57,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:03:57,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:03:57,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:03:57,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:03:57,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:03:57,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:03:57,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:03:57,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:03:57,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:03:57,093 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 18:03:57,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:03:57,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:03:57,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:03:57,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:03:57,151 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:03:57,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:03:57,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:03:57,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:03:57,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:03:57,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:03:57,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:03:57,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:03:57,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:03:57,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:03:57,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:03:57,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:03:57,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:03:57,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:03:57,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:03:57,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:03:57,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:03:57,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:03:57,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:03:57,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:03:57,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:03:57,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:03:57,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:03:57,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:03:57,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:03:57,159 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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:03:57,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:03:57,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:03:57,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:03:57,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:03:57,653 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:03:57,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2020-09-24 18:03:57,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48cd37615/18c88b3c68954710ad0bee1a2186a385/FLAGd07873273 [2020-09-24 18:03:58,327 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:03:58,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2020-09-24 18:03:58,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48cd37615/18c88b3c68954710ad0bee1a2186a385/FLAGd07873273 [2020-09-24 18:03:58,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48cd37615/18c88b3c68954710ad0bee1a2186a385 [2020-09-24 18:03:58,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:03:58,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:03:58,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:03:58,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:03:58,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:03:58,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:03:58" (1/1) ... [2020-09-24 18:03:58,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:58, skipping insertion in model container [2020-09-24 18:03:58,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:03:58" (1/1) ... [2020-09-24 18:03:58,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:03:58,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:03:59,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:03:59,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:03:59,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:03:59,342 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:03:59,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59 WrapperNode [2020-09-24 18:03:59,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:03:59,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:03:59,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:03:59,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:03:59,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (1/1) ... [2020-09-24 18:03:59,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:03:59,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:03:59,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:03:59,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:03:59,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (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 18:03:59,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:03:59,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:03:59,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 18:03:59,530 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 18:03:59,530 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 18:03:59,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 18:03:59,530 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 18:03:59,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:03:59,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 18:03:59,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 18:03:59,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 18:03:59,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 18:03:59,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 18:03:59,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 18:03:59,533 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 18:03:59,533 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 18:03:59,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 18:03:59,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 18:03:59,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 18:03:59,534 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 18:03:59,535 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 18:03:59,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 18:03:59,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 18:03:59,536 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 18:03:59,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 18:03:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 18:03:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 18:03:59,539 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 18:03:59,539 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 18:03:59,539 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 18:03:59,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 18:03:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 18:03:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 18:03:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 18:03:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 18:03:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 18:03:59,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 18:03:59,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 18:03:59,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 18:03:59,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 18:03:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:03:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:03:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 18:03:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 18:03:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 18:03:59,545 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 18:03:59,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 18:03:59,546 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 18:03:59,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 18:03:59,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 18:03:59,546 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 18:03:59,547 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 18:03:59,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 18:03:59,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 18:03:59,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 18:03:59,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:03:59,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 18:03:59,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:03:59,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:03:59,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 18:03:59,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:03:59,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:03:59,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:03:59,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:03:59,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 18:03:59,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:03:59,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 18:03:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 18:03:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:03:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 18:03:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 18:03:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:03:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 18:03:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 18:03:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 18:03:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 18:03:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 18:03:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 18:03:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 18:03:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 18:03:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 18:03:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 18:03:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 18:03:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 18:03:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 18:03:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:03:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 18:03:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:04:00,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:04:00,747 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 18:04:00,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:04:00 BoogieIcfgContainer [2020-09-24 18:04:00,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:04:00,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:04:00,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:04:00,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:04:00,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:03:58" (1/3) ... [2020-09-24 18:04:00,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce8b881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:04:00, skipping insertion in model container [2020-09-24 18:04:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:03:59" (2/3) ... [2020-09-24 18:04:00,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce8b881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:04:00, skipping insertion in model container [2020-09-24 18:04:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:04:00" (3/3) ... [2020-09-24 18:04:00,775 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product24.cil.c [2020-09-24 18:04:00,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:04:00,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:04:00,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:04:00,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:04:00,854 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:04:00,854 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:04:00,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:04:00,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:04:00,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:04:00,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:04:00,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:04:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-09-24 18:04:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:04:00,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:04:00,903 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 18:04:00,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:04:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:04:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash -55902763, now seen corresponding path program 1 times [2020-09-24 18:04:00,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:04:00,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836274450] [2020-09-24 18:04:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:04:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:04:06,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:04:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:04:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 18:04:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:04:06,890 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:04:06,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:04:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:04:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 18:04:07,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:04:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:07,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:07,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:04:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:07,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:04:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:07,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:04:07,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:07,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:04:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:07,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 18:04:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:04:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:04:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:07,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 18:04:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:07,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:07,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:04:07,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:04:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:07,156 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 18:04:07,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836274450] [2020-09-24 18:04:07,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:04:07,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:04:07,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475497757] [2020-09-24 18:04:07,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:04:07,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:04:07,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:04:07,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:04:07,192 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-09-24 18:04:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:04:08,696 INFO L93 Difference]: Finished difference Result 488 states and 583 transitions. [2020-09-24 18:04:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:04:08,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 18:04:08,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:04:08,721 INFO L225 Difference]: With dead ends: 488 [2020-09-24 18:04:08,722 INFO L226 Difference]: Without dead ends: 303 [2020-09-24 18:04:08,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:04:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-24 18:04:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 259. [2020-09-24 18:04:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-24 18:04:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 282 transitions. [2020-09-24 18:04:08,905 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 282 transitions. Word has length 142 [2020-09-24 18:04:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:04:08,906 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 282 transitions. [2020-09-24 18:04:08,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:04:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 282 transitions. [2020-09-24 18:04:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:04:08,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:04:08,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:04:08,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:04:08,926 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:04:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:04:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2092667990, now seen corresponding path program 1 times [2020-09-24 18:04:08,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:04:08,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126181736] [2020-09-24 18:04:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:04:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:04:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:04:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:04:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:04:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 18:04:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:04:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 18:04:14,338 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:04:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:04:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:04:14,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 18:04:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:04:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:14,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:14,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:14,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:04:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:14,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:14,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:04:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:14,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:04:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:04:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:14,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 18:04:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:14,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:04:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 18:04:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:04:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:04:14,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126181736] [2020-09-24 18:04:14,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:04:14,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:04:14,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220852953] [2020-09-24 18:04:14,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:04:14,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:04:14,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:04:14,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:04:14,578 INFO L87 Difference]: Start difference. First operand 259 states and 282 transitions. Second operand 4 states. [2020-09-24 18:04:15,242 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:04:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:04:16,302 INFO L93 Difference]: Finished difference Result 395 states and 446 transitions. [2020-09-24 18:04:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:04:16,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 18:04:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:04:16,311 INFO L225 Difference]: With dead ends: 395 [2020-09-24 18:04:16,312 INFO L226 Difference]: Without dead ends: 286 [2020-09-24 18:04:16,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:04:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-24 18:04:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 249. [2020-09-24 18:04:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-24 18:04:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-24 18:04:16,381 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 143 [2020-09-24 18:04:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:04:16,381 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-24 18:04:16,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:04:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-24 18:04:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:04:16,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:04:16,384 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 18:04:16,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:04:16,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:04:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:04:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash -747836850, now seen corresponding path program 1 times [2020-09-24 18:04:16,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:04:16,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691008022] [2020-09-24 18:04:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:04:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 18:04:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:04:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:04:21,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:04:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 18:04:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:04:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:21,763 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:04:21,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:04:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:04:21,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 18:04:21,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:21,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:04:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:04:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:21,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:21,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:04:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:21,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:04:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:21,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:04:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:21,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:21,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 18:04:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:04:21,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:04:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:04:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:04:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:21,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 18:04:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:21,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:21,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:21,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:04:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:21,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 18:04:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:22,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:22,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:04:22,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:04:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:22,067 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 18:04:22,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691008022] [2020-09-24 18:04:22,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:04:22,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:04:22,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472407161] [2020-09-24 18:04:22,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:04:22,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:04:22,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:04:22,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:04:22,078 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 5 states. [2020-09-24 18:04:22,675 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:04:24,747 INFO L93 Difference]: Finished difference Result 597 states and 694 transitions. [2020-09-24 18:04:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:04:24,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:04:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:04:24,753 INFO L225 Difference]: With dead ends: 597 [2020-09-24 18:04:24,753 INFO L226 Difference]: Without dead ends: 458 [2020-09-24 18:04:24,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:04:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-09-24 18:04:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 378. [2020-09-24 18:04:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-09-24 18:04:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 419 transitions. [2020-09-24 18:04:24,822 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 419 transitions. Word has length 156 [2020-09-24 18:04:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:04:24,823 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 419 transitions. [2020-09-24 18:04:24,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:04:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 419 transitions. [2020-09-24 18:04:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 18:04:24,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:04:24,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:04:24,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:04:24,827 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:04:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:04:24,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2002058177, now seen corresponding path program 1 times [2020-09-24 18:04:24,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:04:24,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385164662] [2020-09-24 18:04:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:04:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:29,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:29,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 18:04:29,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:04:29,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:04:29,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:04:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-24 18:04:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:04:29,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:04:30,284 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:04:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:04:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:04:30,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 18:04:30,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:30,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:30,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:04:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:30,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:30,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:04:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:04:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:04:30,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:04:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:04:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:30,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:30,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 18:04:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:04:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:04:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:04:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:04:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 18:04:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:30,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:04:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:04:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:04:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 18:04:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:04:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:04:30,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:04:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:04:30,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:04:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:04:30,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:04:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:04:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:04:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:04:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:04:30,654 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 18:04:30,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385164662] [2020-09-24 18:04:30,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:04:30,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:04:30,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737582468] [2020-09-24 18:04:30,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:04:30,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:04:30,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:04:30,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:04:30,658 INFO L87 Difference]: Start difference. First operand 378 states and 419 transitions. Second operand 9 states. [2020-09-24 18:04:31,357 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:32,786 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-24 18:04:33,363 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-24 18:04:33,697 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:33,997 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 18:04:34,281 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 18:04:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:04:34,463 INFO L93 Difference]: Finished difference Result 587 states and 686 transitions. [2020-09-24 18:04:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:04:34,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-24 18:04:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:04:34,465 INFO L225 Difference]: With dead ends: 587 [2020-09-24 18:04:34,465 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:04:34,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:04:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:04:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:04:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:04:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:04:34,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2020-09-24 18:04:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:04:34,471 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:04:34,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:04:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:04:34,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:04:34,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:04:34,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:04:34,628 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 18:04:34,795 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:34,962 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:35,128 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:35,307 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:35,466 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:35,626 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:35,763 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 18:04:35,916 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:36,089 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:36,441 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 18:04:36,683 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-24 18:04:37,009 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 18:04:37,328 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 18:04:37,520 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:37,664 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:37,964 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-24 18:04:38,263 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-24 18:04:38,560 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-24 18:04:38,701 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:04:38,855 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:39,004 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:39,148 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:39,299 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:39,450 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:39,606 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:39,759 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:39,908 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:40,058 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:40,203 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:40,355 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:40,505 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:40,656 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:40,801 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:40,950 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:41,053 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 18:04:41,206 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:41,384 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:41,538 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:41,689 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:41,839 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:41,985 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:42,136 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:42,246 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 18:04:42,356 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 6 [2020-09-24 18:04:42,505 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:42,660 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:42,813 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:42,964 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:43,068 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 18:04:43,217 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:43,554 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 18:04:43,789 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-24 18:04:44,107 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 18:04:44,422 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 18:04:44,571 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:44,716 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:44,865 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:45,016 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:45,176 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:45,321 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:45,469 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:45,617 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:45,763 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:04:45,911 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:46,060 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:04:46,541 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-24 18:04:46,718 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-24 18:04:46,936 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-24 18:04:47,355 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-24 18:04:47,767 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 11