/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 interpolation-heuristic=FIRST --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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:47:14,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:47:14,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:47:14,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:47:14,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:47:14,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:47:14,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:47:14,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:47:14,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:47:14,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:47:14,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:47:14,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:47:14,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:47:14,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:47:14,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:47:14,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:47:14,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:47:14,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:47:14,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:47:14,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:47:14,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:47:14,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:47:14,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:47:14,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:47:14,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:47:14,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:47:14,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:47:14,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:47:14,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:47:14,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:47:14,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:47:14,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:47:14,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:47:14,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:47:14,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:47:14,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:47:14,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:47:14,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:47:14,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:47:14,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:47:14,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:47:14,232 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 15:47:14,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:47:14,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:47:14,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:47:14,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:47:14,284 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:47:14,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:47:14,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:47:14,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:47:14,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:47:14,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:47:14,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:47:14,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:47:14,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:47:14,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:47:14,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:47:14,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:47:14,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:47:14,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:47:14,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:47:14,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:47:14,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:47:14,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:47:14,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:47:14,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:47:14,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:47:14,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:47:14,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:47:14,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:47:14,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:47:14,291 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:47:14,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:47:14,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:47:14,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:47:14,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:47:14,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:47:14,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-24 15:47:14,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff6a18caa/df90a29c90b24cb688767b2ddee21103/FLAG89e68ad67 [2020-09-24 15:47:15,560 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:47:15,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-24 15:47:15,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff6a18caa/df90a29c90b24cb688767b2ddee21103/FLAG89e68ad67 [2020-09-24 15:47:15,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff6a18caa/df90a29c90b24cb688767b2ddee21103 [2020-09-24 15:47:15,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:47:15,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:47:15,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:15,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:47:15,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:47:15,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:15" (1/1) ... [2020-09-24 15:47:15,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:15, skipping insertion in model container [2020-09-24 15:47:15,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:15" (1/1) ... [2020-09-24 15:47:15,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:47:15,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:47:16,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:16,454 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:47:16,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:16,588 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:47:16,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16 WrapperNode [2020-09-24 15:47:16,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:16,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:47:16,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:47:16,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:47:16,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (1/1) ... [2020-09-24 15:47:16,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:47:16,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:47:16,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:47:16,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:47:16,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (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 15:47:16,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:47:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:47:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:47:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:47:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:47:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:47:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:47:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:47:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:47:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:47:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:47:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:47:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 15:47:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:47:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:47:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 15:47:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:47:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:47:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:47:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:47:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:47:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:47:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 15:47:16,793 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 15:47:16,793 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:47:16,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:47:16,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:16,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:16,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:47:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:47:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:47:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:47:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:47:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:47:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:47:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:47:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:47:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:47:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:47:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:47:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:47:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:47:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:47:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 15:47:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 15:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:47:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:47:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:47:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:47:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:47:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:47:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:47:17,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:47:17,975 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:47:17,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:17 BoogieIcfgContainer [2020-09-24 15:47:17,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:47:17,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:47:17,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:47:17,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:47:17,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:47:15" (1/3) ... [2020-09-24 15:47:17,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2967ccc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:17, skipping insertion in model container [2020-09-24 15:47:17,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:16" (2/3) ... [2020-09-24 15:47:17,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2967ccc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:17, skipping insertion in model container [2020-09-24 15:47:17,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:17" (3/3) ... [2020-09-24 15:47:17,993 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-09-24 15:47:18,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:47:18,020 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:47:18,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:47:18,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:47:18,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:47:18,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:47:18,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:47:18,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:47:18,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:47:18,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:47:18,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:47:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-09-24 15:47:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:47:18,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:18,141 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] [2020-09-24 15:47:18,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:18,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1883472631, now seen corresponding path program 1 times [2020-09-24 15:47:18,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:18,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005895081] [2020-09-24 15:47:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:18,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:18,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:18,564 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:47:18,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:47:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:47:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:19,052 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,137 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,137 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:19,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:19,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,252 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,252 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,253 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,259 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,259 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,259 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:19,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:19,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:19,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,277 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,278 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,278 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:19,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:19,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:47:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:19,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:19,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,305 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,306 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,308 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:19,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:19,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 15:47:19,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:19,322 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:19,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:19,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:19,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:19,356 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 15:47:19,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005895081] [2020-09-24 15:47:19,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:19,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:47:19,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020688983] [2020-09-24 15:47:19,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:47:19,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:19,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:47:19,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:19,396 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 3 states. [2020-09-24 15:47:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:20,977 INFO L93 Difference]: Finished difference Result 503 states and 601 transitions. [2020-09-24 15:47:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:47:20,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:47:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:21,002 INFO L225 Difference]: With dead ends: 503 [2020-09-24 15:47:21,002 INFO L226 Difference]: Without dead ends: 310 [2020-09-24 15:47:21,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-24 15:47:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 267. [2020-09-24 15:47:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 15:47:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 292 transitions. [2020-09-24 15:47:21,124 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 292 transitions. Word has length 153 [2020-09-24 15:47:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:21,125 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 292 transitions. [2020-09-24 15:47:21,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:47:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 292 transitions. [2020-09-24 15:47:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:47:21,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:21,132 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] [2020-09-24 15:47:21,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:47:21,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1086228284, now seen corresponding path program 1 times [2020-09-24 15:47:21,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:21,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890701680] [2020-09-24 15:47:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:47:21,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:47:21,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:47:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:47:21,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:21,571 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:21,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,590 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,590 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,591 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,591 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:21,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:21,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:21,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,724 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,725 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:21,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:21,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,740 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:47:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,746 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:21,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:47:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,752 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,752 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,752 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:21,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:47:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:21,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:21,759 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:21,759 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:21,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:21,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:21,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:21,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:21,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:21,793 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 15:47:21,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890701680] [2020-09-24 15:47:21,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:21,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:21,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629093064] [2020-09-24 15:47:21,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:21,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:21,799 INFO L87 Difference]: Start difference. First operand 267 states and 292 transitions. Second operand 4 states. [2020-09-24 15:47:22,479 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:47:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:23,577 INFO L93 Difference]: Finished difference Result 414 states and 468 transitions. [2020-09-24 15:47:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:23,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:47:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:23,584 INFO L225 Difference]: With dead ends: 414 [2020-09-24 15:47:23,584 INFO L226 Difference]: Without dead ends: 293 [2020-09-24 15:47:23,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 15:47:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-24 15:47:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-09-24 15:47:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-24 15:47:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 279 transitions. [2020-09-24 15:47:23,638 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 279 transitions. Word has length 154 [2020-09-24 15:47:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:23,639 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 279 transitions. [2020-09-24 15:47:23,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 279 transitions. [2020-09-24 15:47:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 15:47:23,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:23,643 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] [2020-09-24 15:47:23,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:47:23,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:23,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1753608415, now seen corresponding path program 1 times [2020-09-24 15:47:23,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:23,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864165949] [2020-09-24 15:47:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:23,751 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:47:23,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:23,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 15:47:23,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:47:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:47:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 15:47:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 15:47:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 28 [2020-09-24 15:47:24,170 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:24,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,222 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:24,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:24,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 15:47:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,290 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,290 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,291 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,291 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:24,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,299 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,299 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:24,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:24,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,307 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,308 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,308 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,309 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:24,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:24,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,324 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,324 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,332 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 15:47:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:24,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:24,340 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:24,340 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:24,400 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 15:47:24,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864165949] [2020-09-24 15:47:24,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:24,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:24,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870947354] [2020-09-24 15:47:24,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:24,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:24,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:24,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:24,404 INFO L87 Difference]: Start difference. First operand 257 states and 279 transitions. Second operand 4 states. [2020-09-24 15:47:25,119 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:26,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:26,927 INFO L93 Difference]: Finished difference Result 599 states and 688 transitions. [2020-09-24 15:47:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:26,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-24 15:47:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:26,939 INFO L225 Difference]: With dead ends: 599 [2020-09-24 15:47:26,939 INFO L226 Difference]: Without dead ends: 452 [2020-09-24 15:47:26,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-24 15:47:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 398. [2020-09-24 15:47:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-09-24 15:47:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 443 transitions. [2020-09-24 15:47:27,021 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 443 transitions. Word has length 163 [2020-09-24 15:47:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:27,021 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 443 transitions. [2020-09-24 15:47:27,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:27,022 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 443 transitions. [2020-09-24 15:47:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 15:47:27,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:27,026 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] [2020-09-24 15:47:27,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:47:27,026 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1156257497, now seen corresponding path program 1 times [2020-09-24 15:47:27,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:27,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978623954] [2020-09-24 15:47:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 15:47:27,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:47:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 15:47:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 15:47:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,478 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:27,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,520 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,520 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,521 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,521 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:27,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:27,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 15:47:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,574 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,574 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,575 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,575 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:27,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,580 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,580 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,580 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,581 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,587 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,593 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,593 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,594 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:27,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:47:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,614 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,614 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:47:27,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:47:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 15:47:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,621 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:47:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,631 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,631 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,632 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,632 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:47:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:47:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 15:47:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:27,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:27,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:27,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:27,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:27,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:27,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:27,703 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 15:47:27,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978623954] [2020-09-24 15:47:27,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:27,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:47:27,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476795219] [2020-09-24 15:47:27,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:47:27,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:47:27,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:47:27,706 INFO L87 Difference]: Start difference. First operand 398 states and 443 transitions. Second operand 9 states. [2020-09-24 15:47:28,262 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:30,416 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:30,786 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:31,140 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:31,491 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:31,849 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:32,186 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:32,505 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:33,649 INFO L93 Difference]: Finished difference Result 1065 states and 1318 transitions. [2020-09-24 15:47:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:47:33,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 15:47:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:33,662 INFO L225 Difference]: With dead ends: 1065 [2020-09-24 15:47:33,662 INFO L226 Difference]: Without dead ends: 777 [2020-09-24 15:47:33,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:47:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-09-24 15:47:33,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 657. [2020-09-24 15:47:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-09-24 15:47:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 756 transitions. [2020-09-24 15:47:33,789 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 756 transitions. Word has length 172 [2020-09-24 15:47:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:33,789 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 756 transitions. [2020-09-24 15:47:33,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:47:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 756 transitions. [2020-09-24 15:47:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 15:47:33,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:33,795 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] [2020-09-24 15:47:33,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:47:33,795 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:33,796 INFO L82 PathProgramCache]: Analyzing trace with hash 82436204, now seen corresponding path program 1 times [2020-09-24 15:47:33,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:33,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784389316] [2020-09-24 15:47:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:47:33,907 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:47:33,908 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:47:33,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:47:33,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:47:33 BoogieIcfgContainer [2020-09-24 15:47:33,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:47:33,946 INFO L168 Benchmark]: Toolchain (without parser) took 18089.05 ms. Allocated memory was 143.7 MB in the beginning and 554.7 MB in the end (delta: 411.0 MB). Free memory was 102.9 MB in the beginning and 90.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 423.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:33,947 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 15:47:33,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.24 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 102.0 MB in the beginning and 172.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:33,949 INFO L168 Benchmark]: Boogie Preprocessor took 103.24 ms. Allocated memory is still 205.0 MB. Free memory was 172.7 MB in the beginning and 168.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:33,950 INFO L168 Benchmark]: RCFGBuilder took 1289.28 ms. Allocated memory was 205.0 MB in the beginning and 239.1 MB in the end (delta: 34.1 MB). Free memory was 168.8 MB in the beginning and 178.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:33,951 INFO L168 Benchmark]: TraceAbstraction took 15959.56 ms. Allocated memory was 239.1 MB in the beginning and 554.7 MB in the end (delta: 315.6 MB). Free memory was 178.3 MB in the beginning and 90.3 MB in the end (delta: 88.0 MB). Peak memory consumption was 403.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:33,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.24 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 102.0 MB in the beginning and 172.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.24 ms. Allocated memory is still 205.0 MB. Free memory was 172.7 MB in the beginning and 168.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1289.28 ms. Allocated memory was 205.0 MB in the beginning and 239.1 MB in the end (delta: 34.1 MB). Free memory was 168.8 MB in the beginning and 178.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15959.56 ms. Allocated memory was 239.1 MB in the beginning and 554.7 MB in the end (delta: 315.6 MB). Free memory was 178.3 MB in the beginning and 90.3 MB in the end (delta: 88.0 MB). Peak memory consumption was 403.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1027 SDtfs, 1120 SDslu, 815 SDs, 0 SdLazy, 2254 SolverSat, 374 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 253 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 255580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...