/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:59:26,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:59:26,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:59:26,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:59:26,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:59:26,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:59:26,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:59:26,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:59:26,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:59:26,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:59:26,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:59:26,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:59:26,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:59:26,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:59:26,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:59:26,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:59:26,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:59:26,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:59:26,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:59:26,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:59:26,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:59:26,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:59:26,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:59:26,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:59:26,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:59:26,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:59:26,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:59:26,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:59:26,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:59:26,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:59:26,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:59:26,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:59:26,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:59:26,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:59:26,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:59:26,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:59:26,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:59:26,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:59:26,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:59:26,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:59:26,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:59:26,297 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 [2020-09-25 02:59:26,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:59:26,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:59:26,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:59:26,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:59:26,347 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:59:26,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:59:26,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:59:26,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:59:26,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:59:26,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:59:26,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:59:26,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:59:26,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:59:26,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:59:26,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:59:26,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:59:26,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:59:26,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:59:26,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:59:26,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:59:26,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:59:26,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:59:26,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:59:26,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:59:26,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:59:26,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:59:26,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:59:26,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:59:26,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:59:26,353 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 02:59:26,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:59:26,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:59:26,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:59:26,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:59:26,815 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:59:26,816 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-09-25 02:59:26,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/351441630/dd5c953410984149a643c434489349e6/FLAG525bc93ff [2020-09-25 02:59:27,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:59:27,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-09-25 02:59:27,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/351441630/dd5c953410984149a643c434489349e6/FLAG525bc93ff [2020-09-25 02:59:27,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/351441630/dd5c953410984149a643c434489349e6 [2020-09-25 02:59:27,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:59:27,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:59:27,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:59:27,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:59:27,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:59:27,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:59:27" (1/1) ... [2020-09-25 02:59:27,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:27, skipping insertion in model container [2020-09-25 02:59:27,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:59:27" (1/1) ... [2020-09-25 02:59:27,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:59:27,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:59:28,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:59:28,422 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:59:28,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:59:28,565 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:59:28,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28 WrapperNode [2020-09-25 02:59:28,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:59:28,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:59:28,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:59:28,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:59:28,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (1/1) ... [2020-09-25 02:59:28,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:59:28,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:59:28,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:59:28,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:59:28,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (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 [2020-09-25 02:59:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:59:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:59:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 02:59:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 02:59:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 02:59:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 02:59:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 02:59:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 02:59:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:59:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 02:59:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 02:59:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 02:59:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 02:59:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 02:59:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 02:59:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 02:59:28,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 02:59:28,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 02:59:28,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 02:59:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 02:59:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 02:59:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 02:59:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 02:59:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 02:59:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 02:59:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 02:59:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 02:59:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 02:59:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 02:59:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 02:59:28,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 02:59:28,786 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 02:59:28,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 02:59:28,786 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 02:59:28,786 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 02:59:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 02:59:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 02:59:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 02:59:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 02:59:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:59:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:59:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:59:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 02:59:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 02:59:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 02:59:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 02:59:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 02:59:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 02:59:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 02:59:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 02:59:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 02:59:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 02:59:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 02:59:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 02:59:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 02:59:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 02:59:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:59:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 02:59:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 02:59:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:59:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:59:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 02:59:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:59:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:59:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:59:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:59:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 02:59:28,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:59:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 02:59:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 02:59:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:59:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 02:59:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 02:59:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:59:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 02:59:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 02:59:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 02:59:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 02:59:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 02:59:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 02:59:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 02:59:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 02:59:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 02:59:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:59:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 02:59:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 02:59:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 02:59:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 02:59:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 02:59:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 02:59:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 02:59:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:59:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 02:59:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:59:30,168 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:59:30,168 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 02:59:30,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:59:30 BoogieIcfgContainer [2020-09-25 02:59:30,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:59:30,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:59:30,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:59:30,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:59:30,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:59:27" (1/3) ... [2020-09-25 02:59:30,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a774718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:59:30, skipping insertion in model container [2020-09-25 02:59:30,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:28" (2/3) ... [2020-09-25 02:59:30,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a774718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:59:30, skipping insertion in model container [2020-09-25 02:59:30,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:59:30" (3/3) ... [2020-09-25 02:59:30,196 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-09-25 02:59:30,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:59:30,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:59:30,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:59:30,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:59:30,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:59:30,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:59:30,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:59:30,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:59:30,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:59:30,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:59:30,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:59:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2020-09-25 02:59:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 02:59:30,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:30,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:59:30,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1612013966, now seen corresponding path program 1 times [2020-09-25 02:59:30,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:30,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682243095] [2020-09-25 02:59:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 02:59:35,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:59:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 02:59:35,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:35,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:59:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 02:59:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 02:59:35,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:59:36,356 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:36,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 02:59:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:59:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:59:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:59:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:36,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:59:36,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:36,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:36,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:59:36,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:59:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 02:59:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:36,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:36,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 02:59:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:59:36,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:59:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 02:59:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:36,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:36,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:59:37,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682243095] [2020-09-25 02:59:37,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:37,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:59:37,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87908554] [2020-09-25 02:59:37,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:59:37,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:37,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:59:37,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:59:37,044 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 8 states. [2020-09-25 02:59:37,771 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:39,596 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:39,970 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:59:40,377 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:40,823 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:41,145 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:59:41,448 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:41,759 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:43,362 INFO L93 Difference]: Finished difference Result 702 states and 868 transitions. [2020-09-25 02:59:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:59:43,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 02:59:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:43,387 INFO L225 Difference]: With dead ends: 702 [2020-09-25 02:59:43,387 INFO L226 Difference]: Without dead ends: 486 [2020-09-25 02:59:43,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:59:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-09-25 02:59:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 436. [2020-09-25 02:59:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-09-25 02:59:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 498 transitions. [2020-09-25 02:59:43,557 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 498 transitions. Word has length 153 [2020-09-25 02:59:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:43,559 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 498 transitions. [2020-09-25 02:59:43,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:59:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 498 transitions. [2020-09-25 02:59:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 02:59:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:43,567 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] [2020-09-25 02:59:43,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:59:43,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1936006400, now seen corresponding path program 1 times [2020-09-25 02:59:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:43,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967948630] [2020-09-25 02:59:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:48,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 02:59:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:59:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 02:59:48,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:59:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 02:59:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:59:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:49,097 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:49,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 02:59:49,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 02:59:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:49,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:49,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:49,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:49,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:49,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:59:49,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 02:59:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:59:49,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:59:49,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:59:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 02:59:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:49,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:49,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 02:59:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:49,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:59:49,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 02:59:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:49,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:49,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:49,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:49,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:49,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:59:49,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967948630] [2020-09-25 02:59:49,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:49,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:59:49,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659115391] [2020-09-25 02:59:49,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:59:49,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:49,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:59:49,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:59:49,669 INFO L87 Difference]: Start difference. First operand 436 states and 498 transitions. Second operand 6 states. [2020-09-25 02:59:50,193 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:51,026 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 02:59:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:54,069 INFO L93 Difference]: Finished difference Result 1358 states and 1688 transitions. [2020-09-25 02:59:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:59:54,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 02:59:54,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:54,081 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 02:59:54,082 INFO L226 Difference]: Without dead ends: 1032 [2020-09-25 02:59:54,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:59:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-09-25 02:59:54,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 915. [2020-09-25 02:59:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-09-25 02:59:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1083 transitions. [2020-09-25 02:59:54,259 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1083 transitions. Word has length 159 [2020-09-25 02:59:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:54,260 INFO L479 AbstractCegarLoop]: Abstraction has 915 states and 1083 transitions. [2020-09-25 02:59:54,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:59:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1083 transitions. [2020-09-25 02:59:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 02:59:54,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:54,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:59:54,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:59:54,267 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:54,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:54,268 INFO L82 PathProgramCache]: Analyzing trace with hash -662013374, now seen corresponding path program 1 times [2020-09-25 02:59:54,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:54,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121225528] [2020-09-25 02:59:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:59,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 02:59:59,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:59:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 02:59:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:59:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 02:59:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:59:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:59,725 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:00:00,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 03:00:00,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:00:00,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:00:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:00:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:00:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:00,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:00:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:00:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:00,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:00:00,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:00:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:00:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:00:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 03:00:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:00:00,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:00:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:00:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 03:00:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:00:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:00:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:00:00,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:00:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:00:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:00:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:00:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:00:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:00:00,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:00:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:00:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:00:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:00:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:00,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:00:00,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 03:00:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:00,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:00,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 03:00:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:00,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:00,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-25 03:00:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:00,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:00,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:00,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:00:00,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121225528] [2020-09-25 03:00:00,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:00:00,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:00:00,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827854794] [2020-09-25 03:00:00,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:00:00,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:00:00,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:00:00,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:00:00,343 INFO L87 Difference]: Start difference. First operand 915 states and 1083 transitions. Second operand 7 states. [2020-09-25 03:00:01,063 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:00:03,048 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:00:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:00:05,091 INFO L93 Difference]: Finished difference Result 2424 states and 3153 transitions. [2020-09-25 03:00:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:00:05,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 03:00:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:00:05,103 INFO L225 Difference]: With dead ends: 2424 [2020-09-25 03:00:05,103 INFO L226 Difference]: Without dead ends: 1619 [2020-09-25 03:00:05,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:00:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-09-25 03:00:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1342. [2020-09-25 03:00:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2020-09-25 03:00:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1580 transitions. [2020-09-25 03:00:05,290 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1580 transitions. Word has length 181 [2020-09-25 03:00:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:00:05,292 INFO L479 AbstractCegarLoop]: Abstraction has 1342 states and 1580 transitions. [2020-09-25 03:00:05,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:00:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1580 transitions. [2020-09-25 03:00:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 03:00:05,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:00:05,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:00:05,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:00:05,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:00:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:00:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash 654753658, now seen corresponding path program 1 times [2020-09-25 03:00:05,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:00:05,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624309633] [2020-09-25 03:00:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:00:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:00:05,370 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:00:05,370 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:00:05,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:00:05,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:00:05 BoogieIcfgContainer [2020-09-25 03:00:05,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:00:05,433 INFO L168 Benchmark]: Toolchain (without parser) took 37637.16 ms. Allocated memory was 141.0 MB in the beginning and 621.3 MB in the end (delta: 480.2 MB). Free memory was 100.7 MB in the beginning and 342.9 MB in the end (delta: -242.2 MB). Peak memory consumption was 238.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:00:05,434 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:00:05,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.50 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 172.6 MB in the end (delta: -72.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:00:05,440 INFO L168 Benchmark]: Boogie Preprocessor took 106.09 ms. Allocated memory is still 204.5 MB. Free memory was 172.6 MB in the beginning and 168.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:00:05,448 INFO L168 Benchmark]: RCFGBuilder took 1510.82 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 168.5 MB in the beginning and 177.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:00:05,454 INFO L168 Benchmark]: TraceAbstraction took 35244.63 ms. Allocated memory was 237.5 MB in the beginning and 621.3 MB in the end (delta: 383.8 MB). Free memory was 176.2 MB in the beginning and 342.9 MB in the end (delta: -166.7 MB). Peak memory consumption was 217.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:00:05,459 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.50 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 172.6 MB in the end (delta: -72.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.09 ms. Allocated memory is still 204.5 MB. Free memory was 172.6 MB in the beginning and 168.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1510.82 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 168.5 MB in the beginning and 177.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35244.63 ms. Allocated memory was 237.5 MB in the beginning and 621.3 MB in the end (delta: 383.8 MB). Free memory was 176.2 MB in the beginning and 342.9 MB in the end (delta: -166.7 MB). Peak memory consumption was 217.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) [L577] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L577] RET waterRise() [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) [L603] CALL stopSystem() [L828] COND FALSE !(\read(pumpRunning)) [L835] systemActive = 0 [L603] RET stopSystem() [L610] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND FALSE !(\read(systemActive)) [L652] CALL __utac_acc__Specification3_spec__1() [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L942] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] RET, EXPR isMethaneLevelCritical() [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L948] CALL, EXPR getWaterLevel() [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] RET, EXPR getWaterLevel() [L948] tmp___0 = getWaterLevel() [L950] COND TRUE tmp___0 == 2 [L952] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L952] RET, EXPR isPumpRunning() [L952] tmp___1 = isPumpRunning() [L954] COND FALSE !(\read(tmp___1)) [L958] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 639 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 941 SDtfs, 1926 SDslu, 1317 SDs, 0 SdLazy, 3107 SolverSat, 742 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1342occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 444 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 250274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...