/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:59:24,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:59:24,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:59:24,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:59:24,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:59:24,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:59:24,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:59:24,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:59:24,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:59:24,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:59:24,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:59:24,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:59:24,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:59:24,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:59:24,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:59:24,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:59:24,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:59:24,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:59:24,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:59:24,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:59:24,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:59:24,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:59:24,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:59:24,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:59:24,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:59:24,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:59:24,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:59:24,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:59:24,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:59:24,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:59:24,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:59:24,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:59:24,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:59:24,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:59:24,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:59:24,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:59:24,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:59:24,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:59:24,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:59:24,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:59:24,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:59:24,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:59:24,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:59:24,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:59:24,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:59:24,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:59:24,287 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:59:24,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:59:24,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:59:24,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:59:24,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:59:24,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:59:24,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:59:24,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:59:24,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:59:24,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:59:24,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:59:24,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:59:24,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:59:24,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:59:24,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:59:24,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:59:24,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:59:24,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:59:24,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:59:24,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:59:24,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:59:24,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:59:24,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:59:24,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:59:24,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:59:24,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 02:59:24,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:59:24,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:59:24,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:59:24,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:59:24,851 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:59:24,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-09-25 02:59:24,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46a93b95/d35e5869012549e19094158f66f7c44f/FLAG06115bd33 [2020-09-25 02:59:25,573 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:59:25,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-09-25 02:59:25,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46a93b95/d35e5869012549e19094158f66f7c44f/FLAG06115bd33 [2020-09-25 02:59:25,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46a93b95/d35e5869012549e19094158f66f7c44f [2020-09-25 02:59:25,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:59:25,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:59:25,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:59:25,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:59:25,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:59:25,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:59:25" (1/1) ... [2020-09-25 02:59:25,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277364e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:25, skipping insertion in model container [2020-09-25 02:59:25,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:59:25" (1/1) ... [2020-09-25 02:59:25,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:59:25,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:59:26,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:59:26,505 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:59:26,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:59:26,688 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:59:26,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26 WrapperNode [2020-09-25 02:59:26,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:59:26,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:59:26,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:59:26,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:59:26,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... [2020-09-25 02:59:26,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:59:26,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:59:26,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:59:26,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:59:26,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:59:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:59:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:59:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 02:59:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 02:59:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 02:59:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 02:59:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 02:59:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:59:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 02:59:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 02:59:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 02:59:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 02:59:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:59:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 02:59:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 02:59:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 02:59:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 02:59:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 02:59:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 02:59:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 02:59:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 02:59:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 02:59:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 02:59:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 02:59:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 02:59:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 02:59:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 02:59:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 02:59:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 02:59:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 02:59:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 02:59:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 02:59:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 02:59:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 02:59:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 02:59:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 02:59:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 02:59:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 02:59:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 02:59:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 02:59:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:59:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:59:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 02:59:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 02:59:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 02:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 02:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 02:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 02:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 02:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 02:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 02:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 02:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 02:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 02:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 02:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 02:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 02:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 02:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 02:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 02:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 02:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 02:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 02:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:59:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 02:59:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 02:59:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 02:59:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 02:59:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 02:59:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 02:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 02:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 02:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 02:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 02:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 02:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 02:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 02:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 02:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 02:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 02:59:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:59:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 02:59:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:59:28,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:59:28,162 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 02:59:28,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:59:28 BoogieIcfgContainer [2020-09-25 02:59:28,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:59:28,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:59:28,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:59:28,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:59:28,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:59:25" (1/3) ... [2020-09-25 02:59:28,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391634e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:59:28, skipping insertion in model container [2020-09-25 02:59:28,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:26" (2/3) ... [2020-09-25 02:59:28,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391634e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:59:28, skipping insertion in model container [2020-09-25 02:59:28,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:59:28" (3/3) ... [2020-09-25 02:59:28,180 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-09-25 02:59:28,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:59:28,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:59:28,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:59:28,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:59:28,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:59:28,270 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:59:28,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:59:28,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:59:28,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:59:28,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:59:28,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:59:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-09-25 02:59:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 02:59:28,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:28,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:59:28,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash 396628182, now seen corresponding path program 1 times [2020-09-25 02:59:28,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:28,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349469238] [2020-09-25 02:59:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:33,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 02:59:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:59:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:59:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:59:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 02:59:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 02:59:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:59:34,480 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:34,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:34,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:34,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 02:59:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:59:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:34,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:34,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:34,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:34,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:34,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:34,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:59:34,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:35,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:35,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:35,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:35,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:59:35,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:35,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:35,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:35,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:35,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:35,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:35,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 02:59:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:35,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:35,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:35,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:35,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:35,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:35,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:35,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 02:59:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:35,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:59:35,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:59:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 02:59:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:35,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:35,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:59:35,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349469238] [2020-09-25 02:59:35,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:35,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:59:35,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345657402] [2020-09-25 02:59:35,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:59:35,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:35,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:59:35,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:59:35,182 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 8 states. [2020-09-25 02:59:36,068 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:38,070 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 02:59:38,485 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 02:59:39,088 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 02:59:39,499 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:39,902 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:59:40,246 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:59:40,582 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:42,131 INFO L93 Difference]: Finished difference Result 690 states and 849 transitions. [2020-09-25 02:59:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:59:42,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 02:59:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:42,159 INFO L225 Difference]: With dead ends: 690 [2020-09-25 02:59:42,159 INFO L226 Difference]: Without dead ends: 479 [2020-09-25 02:59:42,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:59:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-09-25 02:59:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 428. [2020-09-25 02:59:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-25 02:59:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 484 transitions. [2020-09-25 02:59:42,342 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 484 transitions. Word has length 153 [2020-09-25 02:59:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:42,343 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 484 transitions. [2020-09-25 02:59:42,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:59:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 484 transitions. [2020-09-25 02:59:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 02:59:42,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:42,353 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] [2020-09-25 02:59:42,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:59:42,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash -497585483, now seen corresponding path program 1 times [2020-09-25 02:59:42,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:42,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217367656] [2020-09-25 02:59:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 02:59:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-09-25 02:59:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 02:59:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:59:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,144 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:43,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 02:59:43,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:43,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:43,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:43,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:43,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 02:59:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:59:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:43,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 02:59:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:59:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:59:43,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:59:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 02:59:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-25 02:59:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:43,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:43,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-25 02:59:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:43,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:59:43,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217367656] [2020-09-25 02:59:43,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:43,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:59:43,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726469385] [2020-09-25 02:59:43,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:59:43,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:43,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:59:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:59:43,412 INFO L87 Difference]: Start difference. First operand 428 states and 484 transitions. Second operand 6 states. [2020-09-25 02:59:44,011 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:47,053 INFO L93 Difference]: Finished difference Result 1192 states and 1457 transitions. [2020-09-25 02:59:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:59:47,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-25 02:59:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:47,063 INFO L225 Difference]: With dead ends: 1192 [2020-09-25 02:59:47,064 INFO L226 Difference]: Without dead ends: 874 [2020-09-25 02:59:47,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:59:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-09-25 02:59:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 721. [2020-09-25 02:59:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-09-25 02:59:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 829 transitions. [2020-09-25 02:59:47,180 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 829 transitions. Word has length 172 [2020-09-25 02:59:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:47,181 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 829 transitions. [2020-09-25 02:59:47,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:59:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 829 transitions. [2020-09-25 02:59:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 02:59:47,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:47,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:59:47,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:59:47,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2130439438, now seen corresponding path program 1 times [2020-09-25 02:59:47,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:47,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885854501] [2020-09-25 02:59:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:47,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 02:59:52,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:59:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:59:52,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:59:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 02:59:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 02:59:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:52,528 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 02:59:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 02:59:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:52,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:52,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:52,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:52,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:59:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:52,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:59:52,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:52,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 02:59:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:59:52,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:52,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:59:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 02:59:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:59:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:59:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:59:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 02:59:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:59:52,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:59:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:59:52,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:59:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:59:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:59:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:59:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:59:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:59:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:59:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:59:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:59:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:59:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:52,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 02:59:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:52,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:52,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 02:59:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:52,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:52,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-25 02:59:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:52,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:52,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:52,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:59:53,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885854501] [2020-09-25 02:59:53,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:53,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:59:53,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713931092] [2020-09-25 02:59:53,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:59:53,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:53,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:59:53,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:59:53,029 INFO L87 Difference]: Start difference. First operand 721 states and 829 transitions. Second operand 8 states. [2020-09-25 02:59:53,578 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:55,485 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 02:59:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:58,676 INFO L93 Difference]: Finished difference Result 2136 states and 2794 transitions. [2020-09-25 02:59:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 02:59:58,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-09-25 02:59:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:58,689 INFO L225 Difference]: With dead ends: 2136 [2020-09-25 02:59:58,689 INFO L226 Difference]: Without dead ends: 1525 [2020-09-25 02:59:58,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:59:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2020-09-25 02:59:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1143. [2020-09-25 02:59:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-09-25 02:59:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1335 transitions. [2020-09-25 02:59:58,895 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1335 transitions. Word has length 185 [2020-09-25 02:59:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:58,896 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1335 transitions. [2020-09-25 02:59:58,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:59:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1335 transitions. [2020-09-25 02:59:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 02:59:58,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:58,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:59:58,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:59:58,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash 230448906, now seen corresponding path program 1 times [2020-09-25 02:59:58,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:58,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503224849] [2020-09-25 02:59:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:59:58,969 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:59:58,969 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:59:58,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:59:59,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:59:59 BoogieIcfgContainer [2020-09-25 02:59:59,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:59:59,005 INFO L168 Benchmark]: Toolchain (without parser) took 33161.02 ms. Allocated memory was 139.5 MB in the beginning and 643.3 MB in the end (delta: 503.8 MB). Free memory was 100.6 MB in the beginning and 570.8 MB in the end (delta: -470.2 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:59,006 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:59:59,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 838.57 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 99.9 MB in the beginning and 167.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:59,008 INFO L168 Benchmark]: Boogie Preprocessor took 95.28 ms. Allocated memory is still 200.3 MB. Free memory was 167.8 MB in the beginning and 163.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:59,009 INFO L168 Benchmark]: RCFGBuilder took 1384.27 ms. Allocated memory was 200.3 MB in the beginning and 233.8 MB in the end (delta: 33.6 MB). Free memory was 163.8 MB in the beginning and 172.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:59,009 INFO L168 Benchmark]: TraceAbstraction took 30831.39 ms. Allocated memory was 233.8 MB in the beginning and 643.3 MB in the end (delta: 409.5 MB). Free memory was 172.8 MB in the beginning and 570.8 MB in the end (delta: -398.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:59,014 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 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 838.57 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 99.9 MB in the beginning and 167.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.28 ms. Allocated memory is still 200.3 MB. Free memory was 167.8 MB in the beginning and 163.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1384.27 ms. Allocated memory was 200.3 MB in the beginning and 233.8 MB in the end (delta: 33.6 MB). Free memory was 163.8 MB in the beginning and 172.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30831.39 ms. Allocated memory was 233.8 MB in the beginning and 643.3 MB in the end (delta: 409.5 MB). Free memory was 172.8 MB in the beginning and 570.8 MB in the end (delta: -398.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 221]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int waterLevel = 1; [L230] int methaneLevelCritical = 0; [L327] int pumpRunning = 0; [L328] int systemActive = 1; [L766] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L529] int splverifierCounter ; [L530] int tmp ; [L531] int tmp___0 ; [L532] int tmp___1 ; [L533] int tmp___2 ; [L536] splverifierCounter = 0 [L538] COND TRUE 1 [L540] COND TRUE splverifierCounter < 4 [L546] tmp = __VERIFIER_nondet_int() [L548] COND TRUE \read(tmp) [L550] CALL waterRise() [L247] COND TRUE waterLevel < 2 [L248] waterLevel = waterLevel + 1 [L550] RET waterRise() [L556] tmp___0 = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp___0)) [L566] tmp___2 = __VERIFIER_nondet_int() [L568] COND FALSE !(\read(tmp___2)) [L574] tmp___1 = __VERIFIER_nondet_int() [L576] COND TRUE \read(tmp___1) [L578] CALL stopSystem() [L508] COND FALSE !(\read(pumpRunning)) [L515] systemActive = 0 [L578] RET stopSystem() [L585] CALL timeShift() [L334] COND FALSE !(\read(pumpRunning)) [L341] COND FALSE !(\read(systemActive)) [L349] CALL __utac_acc__Specification3_spec__1() [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L190] CALL, EXPR isMethaneLevelCritical() [L268] int retValue_acc ; [L271] retValue_acc = methaneLevelCritical [L272] return (retValue_acc); [L190] RET, EXPR isMethaneLevelCritical() [L190] tmp = isMethaneLevelCritical() [L192] COND FALSE !(\read(tmp)) [L196] CALL, EXPR getWaterLevel() [L300] int retValue_acc ; [L303] retValue_acc = waterLevel [L304] return (retValue_acc); [L196] RET, EXPR getWaterLevel() [L196] tmp___0 = getWaterLevel() [L198] COND TRUE tmp___0 == 2 [L200] CALL, EXPR isPumpRunning() [L441] int retValue_acc ; [L444] retValue_acc = pumpRunning [L445] return (retValue_acc); [L200] RET, EXPR isPumpRunning() [L200] tmp___1 = isPumpRunning() [L202] COND FALSE !(\read(tmp___1)) [L206] CALL __automaton_fail() [L221] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 634 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 2077 SDslu, 1287 SDs, 0 SdLazy, 3294 SolverSat, 887 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1143occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 586 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 687 NumberOfCodeBlocks, 687 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 219712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...