/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:59:05,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:59:05,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:59:05,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:59:05,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:59:05,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:59:05,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:59:05,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:59:05,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:59:05,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:59:05,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:59:05,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:59:05,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:59:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:59:05,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:59:05,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:59:05,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:59:05,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:59:05,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:59:05,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:59:05,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:59:05,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:59:05,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:59:05,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:59:05,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:59:05,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:59:05,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:59:05,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:59:05,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:59:05,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:59:05,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:59:05,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:59:05,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:59:05,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:59:05,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:59:05,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:59:05,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:59:05,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:59:05,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:59:05,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:59:05,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:59:05,184 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 02:59:05,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:59:05,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:59:05,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:59:05,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:59:05,238 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:59:05,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:59:05,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:59:05,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:59:05,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:59:05,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:59:05,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:59:05,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:59:05,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:59:05,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:59:05,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:59:05,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:59:05,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:59:05,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:59:05,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:59:05,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:59:05,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:59:05,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:59:05,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:59:05,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:59:05,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:59:05,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:59:05,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:59:05,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:59:05,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:59:05,244 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 02:59:05,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:59:05,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:59:05,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:59:05,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:59:05,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:59:05,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-09-25 02:59:05,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe56c40a4/ff03b2b73dfd4541ac8676f87b968f99/FLAGee4f8eb30 [2020-09-25 02:59:06,472 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:59:06,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-09-25 02:59:06,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe56c40a4/ff03b2b73dfd4541ac8676f87b968f99/FLAGee4f8eb30 [2020-09-25 02:59:06,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe56c40a4/ff03b2b73dfd4541ac8676f87b968f99 [2020-09-25 02:59:06,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:59:06,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:59:06,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:59:06,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:59:06,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:59:06,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:59:06" (1/1) ... [2020-09-25 02:59:06,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0386e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:06, skipping insertion in model container [2020-09-25 02:59:06,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:59:06" (1/1) ... [2020-09-25 02:59:06,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:59:06,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:59:07,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:59:07,395 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:59:07,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:59:07,542 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:59:07,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07 WrapperNode [2020-09-25 02:59:07,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:59:07,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:59:07,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:59:07,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:59:07,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (1/1) ... [2020-09-25 02:59:07,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:59:07,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:59:07,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:59:07,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:59:07,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (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 02:59:07,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:59:07,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:59:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 02:59:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 02:59:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 02:59:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 02:59:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 02:59:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 02:59:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 02:59:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 02:59:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 02:59:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 02:59:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 02:59:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 02:59:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 02:59:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 02:59:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 02:59:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 02:59:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 02:59:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 02:59:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 02:59:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 02:59:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 02:59:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 02:59:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 02:59:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 02:59:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 02:59:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 02:59:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:59:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:59:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 02:59:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 02:59:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 02:59:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 02:59:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 02:59:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 02:59:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 02:59:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 02:59:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 02:59:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 02:59:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 02:59:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:59:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:59:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 02:59:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 02:59:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:59:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:59:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 02:59:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:59:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:59:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:59:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:59:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 02:59:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:59:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 02:59:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 02:59:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:59:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 02:59:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 02:59:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 02:59:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 02:59:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 02:59:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 02:59:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 02:59:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 02:59:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 02:59:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 02:59:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 02:59:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 02:59:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 02:59:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 02:59:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 02:59:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 02:59:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 02:59:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 02:59:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 02:59:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 02:59:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 02:59:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 02:59:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 02:59:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 02:59:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 02:59:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 02:59:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 02:59:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:59:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 02:59:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 02:59:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:59:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 02:59:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:59:09,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:59:09,007 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 02:59:09,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:59:09 BoogieIcfgContainer [2020-09-25 02:59:09,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:59:09,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:59:09,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:59:09,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:59:09,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:59:06" (1/3) ... [2020-09-25 02:59:09,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782dd343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:59:09, skipping insertion in model container [2020-09-25 02:59:09,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:59:07" (2/3) ... [2020-09-25 02:59:09,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782dd343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:59:09, skipping insertion in model container [2020-09-25 02:59:09,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:59:09" (3/3) ... [2020-09-25 02:59:09,026 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product32.cil.c [2020-09-25 02:59:09,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:59:09,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:59:09,073 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:59:09,105 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:59:09,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:59:09,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:59:09,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:59:09,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:59:09,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:59:09,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:59:09,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:59:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2020-09-25 02:59:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 02:59:09,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:09,156 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 02:59:09,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:09,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1415492803, now seen corresponding path program 1 times [2020-09-25 02:59:09,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:09,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899608173] [2020-09-25 02:59:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:11,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:14,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:14,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 02:59:14,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:59:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 02:59:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:59:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 02:59:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 02:59:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:59:15,188 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:15,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-25 02:59:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:59:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:15,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:59:15,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:15,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:59:15,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:15,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:59:15,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:15,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 02:59:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:59:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 02:59:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:15,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:59:15,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:59:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 02:59:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:15,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:15,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:15,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:15,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:15,836 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 02:59:15,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899608173] [2020-09-25 02:59:15,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:15,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:59:15,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471652034] [2020-09-25 02:59:15,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:59:15,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:15,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:59:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:59:15,872 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 8 states. [2020-09-25 02:59:16,550 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:18,420 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:18,803 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:59:19,275 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:19,809 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 02:59:20,122 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:20,468 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:20,761 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 02:59:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:22,256 INFO L93 Difference]: Finished difference Result 668 states and 824 transitions. [2020-09-25 02:59:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:59:22,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 02:59:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:22,281 INFO L225 Difference]: With dead ends: 668 [2020-09-25 02:59:22,282 INFO L226 Difference]: Without dead ends: 463 [2020-09-25 02:59:22,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:59:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-09-25 02:59:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 414. [2020-09-25 02:59:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-09-25 02:59:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 473 transitions. [2020-09-25 02:59:22,466 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 473 transitions. Word has length 153 [2020-09-25 02:59:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:22,467 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 473 transitions. [2020-09-25 02:59:22,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:59:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 473 transitions. [2020-09-25 02:59:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 02:59:22,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:22,476 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 02:59:22,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:59:22,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1511530113, now seen corresponding path program 1 times [2020-09-25 02:59:22,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:22,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806732021] [2020-09-25 02:59:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:22,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 02:59:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 02:59:22,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 02:59:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:59:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,226 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 02:59:23,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:23,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:23,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:23,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:23,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:23,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 02:59:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:59:23,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:23,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 02:59:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:59:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:59:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 02:59:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:23,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:23,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-25 02:59:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:23,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:23,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-25 02:59:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:23,566 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 02:59:23,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806732021] [2020-09-25 02:59:23,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:23,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:59:23,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694296553] [2020-09-25 02:59:23,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:59:23,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:23,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:59:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:59:23,571 INFO L87 Difference]: Start difference. First operand 414 states and 473 transitions. Second operand 6 states. [2020-09-25 02:59:24,071 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 02:59:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:26,829 INFO L93 Difference]: Finished difference Result 1146 states and 1420 transitions. [2020-09-25 02:59:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:59:26,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-25 02:59:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:26,840 INFO L225 Difference]: With dead ends: 1146 [2020-09-25 02:59:26,841 INFO L226 Difference]: Without dead ends: 842 [2020-09-25 02:59:26,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:59:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-09-25 02:59:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 693. [2020-09-25 02:59:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-09-25 02:59:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 807 transitions. [2020-09-25 02:59:26,983 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 807 transitions. Word has length 172 [2020-09-25 02:59:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:26,984 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 807 transitions. [2020-09-25 02:59:26,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:59:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 807 transitions. [2020-09-25 02:59:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 02:59:26,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:26,992 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 02:59:26,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:59:26,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:26,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1993986840, now seen corresponding path program 1 times [2020-09-25 02:59:26,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:26,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042649863] [2020-09-25 02:59:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 02:59:32,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:59:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 02:59:32,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:59:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 02:59:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:59:32,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,403 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 02:59:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:59:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:59:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 02:59:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:59:32,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:59:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:59:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:59:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:59:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:32,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:32,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 02:59:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:32,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:59:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:59:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 02:59:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:32,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:32,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:59:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 02:59:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:59:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:59:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:59:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:59:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 02:59:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:59:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:59:32,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:59:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 02:59:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:59:32,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:59:32,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:59:32,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:59:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:59:32,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:32,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:59:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:59:32,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:59:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 02:59:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:32,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:32,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 02:59:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:32,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:32,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-25 02:59:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:59:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:59:32,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:59:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:59:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:59:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:59:32,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 02:59:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:59:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:59:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:59:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:59:32,917 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 02:59:32,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042649863] [2020-09-25 02:59:32,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:59:32,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:59:32,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653292955] [2020-09-25 02:59:32,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:59:32,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:59:32,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:59:32,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:59:32,921 INFO L87 Difference]: Start difference. First operand 693 states and 807 transitions. Second operand 7 states. [2020-09-25 02:59:33,504 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 02:59:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:59:34,626 INFO L93 Difference]: Finished difference Result 1140 states and 1393 transitions. [2020-09-25 02:59:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:59:34,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-25 02:59:34,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:59:34,631 INFO L225 Difference]: With dead ends: 1140 [2020-09-25 02:59:34,631 INFO L226 Difference]: Without dead ends: 535 [2020-09-25 02:59:34,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:59:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-09-25 02:59:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 461. [2020-09-25 02:59:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-09-25 02:59:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 500 transitions. [2020-09-25 02:59:34,705 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 500 transitions. Word has length 185 [2020-09-25 02:59:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:59:34,705 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 500 transitions. [2020-09-25 02:59:34,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:59:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 500 transitions. [2020-09-25 02:59:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 02:59:34,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:59:34,710 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 02:59:34,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:59:34,710 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:59:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:59:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1825655940, now seen corresponding path program 1 times [2020-09-25 02:59:34,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:59:34,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565053337] [2020-09-25 02:59:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:59:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:59:34,781 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:59:34,781 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:59:34,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:59:34,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:59:34 BoogieIcfgContainer [2020-09-25 02:59:34,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:59:34,816 INFO L168 Benchmark]: Toolchain (without parser) took 28067.47 ms. Allocated memory was 147.8 MB in the beginning and 515.9 MB in the end (delta: 368.1 MB). Free memory was 103.6 MB in the beginning and 253.8 MB in the end (delta: -150.3 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:34,817 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:59:34,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.33 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.9 MB in the beginning and 174.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:34,819 INFO L168 Benchmark]: Boogie Preprocessor took 129.53 ms. Allocated memory is still 205.5 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:34,820 INFO L168 Benchmark]: RCFGBuilder took 1340.48 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 170.4 MB in the beginning and 172.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:34,821 INFO L168 Benchmark]: TraceAbstraction took 25796.89 ms. Allocated memory was 235.4 MB in the beginning and 515.9 MB in the end (delta: 280.5 MB). Free memory was 171.4 MB in the beginning and 253.8 MB in the end (delta: -82.4 MB). Peak memory consumption was 198.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:59:34,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 791.33 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.9 MB in the beginning and 174.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.53 ms. Allocated memory is still 205.5 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1340.48 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 170.4 MB in the beginning and 172.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25796.89 ms. Allocated memory was 235.4 MB in the beginning and 515.9 MB in the end (delta: 280.5 MB). Free memory was 171.4 MB in the beginning and 253.8 MB in the end (delta: -82.4 MB). Peak memory consumption was 198.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 712]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L489] int pumpRunning = 0; [L490] int systemActive = 1; [L717] int cleanupTimeShifts = 4; [L886] int waterLevel = 1; [L887] int methaneLevelCritical = 0; [L793] int retValue_acc ; [L794] int tmp ; [L798] FCALL select_helpers() [L799] FCALL select_features() [L800] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = 1 [L881] return (retValue_acc); [L800] RET, EXPR valid_product() [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) [L804] FCALL setup() [L805] CALL runTest() [L784] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L904] COND TRUE waterLevel < 2 [L905] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___1) [L462] CALL stopSystem() [L688] COND FALSE !(\read(pumpRunning)) [L695] systemActive = 0 [L462] RET stopSystem() [L469] CALL timeShift() [L497] COND FALSE !(\read(pumpRunning)) [L504] COND FALSE !(\read(systemActive)) [L512] CALL __utac_acc__Specification3_spec__1() [L818] int tmp ; [L819] int tmp___0 ; [L820] int tmp___1 ; [L824] CALL, EXPR isMethaneLevelCritical() [L925] int retValue_acc ; [L928] retValue_acc = methaneLevelCritical [L929] return (retValue_acc); [L824] RET, EXPR isMethaneLevelCritical() [L824] tmp = isMethaneLevelCritical() [L826] COND FALSE !(\read(tmp)) [L830] CALL, EXPR getWaterLevel() [L957] int retValue_acc ; [L960] retValue_acc = waterLevel [L961] return (retValue_acc); [L830] RET, EXPR getWaterLevel() [L830] tmp___0 = getWaterLevel() [L832] COND TRUE tmp___0 == 2 [L834] CALL, EXPR isPumpRunning() [L621] int retValue_acc ; [L624] retValue_acc = pumpRunning [L625] return (retValue_acc); [L834] RET, EXPR isPumpRunning() [L834] tmp___1 = isPumpRunning() [L836] COND FALSE !(\read(tmp___1)) [L840] CALL __automaton_fail() [L712] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 640 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 748 SDtfs, 1890 SDslu, 962 SDs, 0 SdLazy, 2166 SolverSat, 690 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=693occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 272 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, 243200 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...