/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:11:53,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:11:53,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:11:53,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:11:53,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:11:53,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:11:53,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:11:53,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:11:53,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:11:53,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:11:53,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:11:53,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:11:53,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:11:53,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:11:53,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:11:53,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:11:53,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:11:53,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:11:53,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:11:53,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:11:53,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:11:53,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:11:53,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:11:53,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:11:53,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:11:53,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:11:53,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:11:53,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:11:53,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:11:53,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:11:53,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:11:53,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:11:53,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:11:53,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:11:53,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:11:53,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:11:53,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:11:53,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:11:53,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:11:53,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:11:53,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:11:53,613 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 [2020-09-21 12:11:53,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:11:53,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:11:53,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:11:53,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:11:53,642 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:11:53,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:11:53,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:11:53,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:11:53,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:11:53,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:11:53,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:11:53,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:11:53,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:11:53,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:11:53,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:11:53,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:11:53,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:11:53,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:11:53,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:11:53,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:11:53,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:11:53,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:11:53,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:11:53,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:11:53,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:11:53,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:11:53,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:11:53,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:11:53,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:11:53,648 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:11:54,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:11:54,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:11:54,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:11:54,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:11:54,151 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:11:54,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-21 12:11:54,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4077f7275/aae8ab6734f646b2b8a274236a375ffd/FLAG32b6d2e8f [2020-09-21 12:11:54,902 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:11:54,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-21 12:11:54,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4077f7275/aae8ab6734f646b2b8a274236a375ffd/FLAG32b6d2e8f [2020-09-21 12:11:55,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4077f7275/aae8ab6734f646b2b8a274236a375ffd [2020-09-21 12:11:55,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:11:55,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:11:55,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:11:55,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:11:55,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:11:55,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:55,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55, skipping insertion in model container [2020-09-21 12:11:55,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:55,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:11:55,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:11:55,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:11:55,752 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:11:55,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:11:55,890 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:11:55,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55 WrapperNode [2020-09-21 12:11:55,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:11:55,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:11:55,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:11:55,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:11:55,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:55,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:55,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:55,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:56,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:56,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:56,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (1/1) ... [2020-09-21 12:11:56,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:11:56,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:11:56,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:11:56,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:11:56,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (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 [2020-09-21 12:11:56,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:11:56,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:11:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:11:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:11:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:11:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:11:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:11:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:11:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:11:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:11:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:11:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:11:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:11:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:11:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:11:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:11:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:11:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:11:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:11:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:11:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:11:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:11:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:11:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:11:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:11:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:11:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:11:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:11:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:11:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:11:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:11:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:11:56,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:11:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:11:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:11:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:11:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:11:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:11:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:11:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:11:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:11:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:11:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:11:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:11:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:11:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:11:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:11:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:11:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:11:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:11:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:11:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:11:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:11:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:11:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:11:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:11:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:11:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:11:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:11:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:11:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:11:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:11:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:11:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:11:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:11:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:11:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:11:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:11:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:11:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:11:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:11:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:11:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:11:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:11:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:11:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:11:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:11:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:11:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:11:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:11:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:11:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:11:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:11:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:11:57,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:11:57,278 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:11:57,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:57 BoogieIcfgContainer [2020-09-21 12:11:57,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:11:57,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:11:57,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:11:57,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:11:57,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:11:55" (1/3) ... [2020-09-21 12:11:57,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab2408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:11:57, skipping insertion in model container [2020-09-21 12:11:57,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:55" (2/3) ... [2020-09-21 12:11:57,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab2408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:11:57, skipping insertion in model container [2020-09-21 12:11:57,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:57" (3/3) ... [2020-09-21 12:11:57,294 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-09-21 12:11:57,307 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:11:57,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:11:57,341 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:11:57,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:11:57,375 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:11:57,375 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:11:57,375 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:11:57,375 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:11:57,375 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:11:57,375 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:11:57,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:11:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-09-21 12:11:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:11:57,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:57,422 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] [2020-09-21 12:11:57,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-09-21 12:11:57,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:57,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303906232] [2020-09-21 12:11:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:11:59,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:11:59,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1333 [2020-09-21 12:11:59,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:11:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:11:59,742 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:11:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:59,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:11:59,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:59,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:59,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:59,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:59,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:59,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:59,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:59,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:59,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:11:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:59,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:59,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:11:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:59,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:59,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:59,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:59,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:59,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:59,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:59,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:59,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:00,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:12:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:00,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:00,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:12:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:00,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:00,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:00,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303906232] [2020-09-21 12:12:00,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:00,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:12:00,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019493206] [2020-09-21 12:12:00,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:12:00,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:00,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:12:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:12:00,101 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-09-21 12:12:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:01,524 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-09-21 12:12:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:12:01,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 12:12:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:01,544 INFO L225 Difference]: With dead ends: 291 [2020-09-21 12:12:01,544 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 12:12:01,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:12:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 12:12:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-09-21 12:12:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 12:12:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-09-21 12:12:01,649 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-09-21 12:12:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:01,650 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-09-21 12:12:01,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:12:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-09-21 12:12:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:12:01,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:01,655 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] [2020-09-21 12:12:01,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:12:01,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-09-21 12:12:01,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:01,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946120736] [2020-09-21 12:12:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:12:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:12:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:12:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 12:12:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,034 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:03,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-21 12:12:03,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:03,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:03,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:03,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:03,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:03,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:03,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:03,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:03,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:12:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:03,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:12:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:03,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:12:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:03,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:03,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:03,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:03,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946120736] [2020-09-21 12:12:03,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:03,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:12:03,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257977401] [2020-09-21 12:12:03,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:12:03,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:03,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:12:03,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:12:03,296 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-09-21 12:12:03,650 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:04,539 INFO L93 Difference]: Finished difference Result 258 states and 328 transitions. [2020-09-21 12:12:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:12:04,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 12:12:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:04,543 INFO L225 Difference]: With dead ends: 258 [2020-09-21 12:12:04,543 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 12:12:04,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:12:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 12:12:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-09-21 12:12:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 12:12:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-09-21 12:12:04,605 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 53 [2020-09-21 12:12:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:04,606 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-09-21 12:12:04,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:12:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-09-21 12:12:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 12:12:04,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:04,616 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] [2020-09-21 12:12:04,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:12:04,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:04,617 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-09-21 12:12:04,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:04,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073873604] [2020-09-21 12:12:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:05,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:05,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 12:12:05,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:12:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:12:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 12:12:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,173 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:06,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-21 12:12:06,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:06,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:06,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:06,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:06,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:06,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:12:06,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:06,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:12:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:12:06,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:12:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:12:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:12:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:12:06,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:12:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:06,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:06,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:06,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:12:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:06,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:06,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 12:12:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:12:06,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:12:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 12:12:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:06,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:06,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:06,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:06,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:06,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073873604] [2020-09-21 12:12:06,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:06,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:12:06,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160054990] [2020-09-21 12:12:06,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:12:06,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:06,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:12:06,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:12:06,679 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 8 states. [2020-09-21 12:12:07,155 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:08,988 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:12:09,421 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:12:09,720 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:12:10,251 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:12:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:11,116 INFO L93 Difference]: Finished difference Result 396 states and 539 transitions. [2020-09-21 12:12:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:12:11,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-21 12:12:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:11,123 INFO L225 Difference]: With dead ends: 396 [2020-09-21 12:12:11,124 INFO L226 Difference]: Without dead ends: 295 [2020-09-21 12:12:11,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:12:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-21 12:12:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 226. [2020-09-21 12:12:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-21 12:12:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 278 transitions. [2020-09-21 12:12:11,194 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 278 transitions. Word has length 70 [2020-09-21 12:12:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:11,195 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 278 transitions. [2020-09-21 12:12:11,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:12:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 278 transitions. [2020-09-21 12:12:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 12:12:11,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:11,197 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] [2020-09-21 12:12:11,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:12:11,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:11,198 INFO L82 PathProgramCache]: Analyzing trace with hash 807382646, now seen corresponding path program 1 times [2020-09-21 12:12:11,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:11,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185089148] [2020-09-21 12:12:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-21 12:12:12,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:12,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:12:12,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:12:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:12:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:12:12,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,508 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:12,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:12:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:12,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:12,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:12,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:12,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:12,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:12:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:12,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:12,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:12:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:12:12,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:12:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:12:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:12:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:12:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:12:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:12:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:12:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:12:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:12,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:12,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-21 12:12:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 12:12:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:12:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:12,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:12,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185089148] [2020-09-21 12:12:12,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:12,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:12:12,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265020615] [2020-09-21 12:12:12,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:12:12,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:12,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:12:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:12:12,730 INFO L87 Difference]: Start difference. First operand 226 states and 278 transitions. Second operand 7 states. [2020-09-21 12:12:13,362 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:12:13,612 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:16,616 INFO L93 Difference]: Finished difference Result 608 states and 863 transitions. [2020-09-21 12:12:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:12:16,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-09-21 12:12:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:16,622 INFO L225 Difference]: With dead ends: 608 [2020-09-21 12:12:16,622 INFO L226 Difference]: Without dead ends: 396 [2020-09-21 12:12:16,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:12:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-09-21 12:12:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 337. [2020-09-21 12:12:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-21 12:12:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 432 transitions. [2020-09-21 12:12:16,710 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 432 transitions. Word has length 74 [2020-09-21 12:12:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:16,711 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 432 transitions. [2020-09-21 12:12:16,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:12:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 432 transitions. [2020-09-21 12:12:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 12:12:16,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:16,714 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] [2020-09-21 12:12:16,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:12:16,714 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:16,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-09-21 12:12:16,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:16,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880945444] [2020-09-21 12:12:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:12:16,775 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:12:16,776 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:12:16,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:12:16,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:12:16 BoogieIcfgContainer [2020-09-21 12:12:16,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:12:16,813 INFO L168 Benchmark]: Toolchain (without parser) took 21627.39 ms. Allocated memory was 146.3 MB in the beginning and 537.9 MB in the end (delta: 391.6 MB). Free memory was 101.7 MB in the beginning and 388.2 MB in the end (delta: -286.5 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:16,814 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-21 12:12:16,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.13 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.9 MB in the beginning and 168.9 MB in the end (delta: -68.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:16,821 INFO L168 Benchmark]: Boogie Preprocessor took 175.16 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 163.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:16,822 INFO L168 Benchmark]: RCFGBuilder took 1215.10 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 163.0 MB in the beginning and 192.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:16,824 INFO L168 Benchmark]: TraceAbstraction took 19526.01 ms. Allocated memory was 233.8 MB in the beginning and 537.9 MB in the end (delta: 304.1 MB). Free memory was 192.5 MB in the beginning and 388.2 MB in the end (delta: -195.7 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:16,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.13 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.9 MB in the beginning and 168.9 MB in the end (delta: -68.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.16 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 163.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1215.10 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 163.0 MB in the beginning and 192.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19526.01 ms. Allocated memory was 233.8 MB in the beginning and 537.9 MB in the end (delta: 304.1 MB). Free memory was 192.5 MB in the beginning and 388.2 MB in the end (delta: -195.7 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: 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; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 585 SDtfs, 845 SDslu, 385 SDs, 0 SdLazy, 1794 SolverSat, 537 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 192 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 69647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...