/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_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:07:33,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:07:33,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:07:33,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:07:33,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:07:33,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:07:33,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:07:33,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:07:33,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:07:33,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:07:33,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:07:33,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:07:33,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:07:33,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:07:33,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:07:33,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:07:33,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:07:33,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:07:33,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:07:33,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:07:33,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:07:33,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:07:33,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:07:33,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:07:33,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:07:33,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:07:33,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:07:33,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:07:33,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:07:33,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:07:33,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:07:33,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:07:33,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:07:33,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:07:33,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:07:33,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:07:33,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:07:33,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:07:33,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:07:33,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:07:33,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:07:33,586 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 12:07:33,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:07:33,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:07:33,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:07:33,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:07:33,625 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:07:33,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:07:33,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:07:33,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:07:33,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:07:33,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:07:33,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:07:33,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:07:33,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:07:33,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:07:33,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:07:33,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:07:33,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:07:33,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:07:33,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:07:33,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:07:33,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:07:33,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:07:33,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:07:33,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:07:33,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:07:33,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:07:33,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:07:33,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:07:33,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:07:33,633 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 12:07:34,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:07:34,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:07:34,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:07:34,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:07:34,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:07:34,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-21 12:07:34,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2790d993f/ba5f687acf504a4baaec46d9c60971e8/FLAGc31693c5e [2020-09-21 12:07:34,916 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:07:34,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-21 12:07:34,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2790d993f/ba5f687acf504a4baaec46d9c60971e8/FLAGc31693c5e [2020-09-21 12:07:35,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2790d993f/ba5f687acf504a4baaec46d9c60971e8 [2020-09-21 12:07:35,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:07:35,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:07:35,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:35,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:07:35,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:07:35,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35, skipping insertion in model container [2020-09-21 12:07:35,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:07:35,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:07:35,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:35,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:07:35,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:35,866 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:07:35,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35 WrapperNode [2020-09-21 12:07:35,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:35,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:07:35,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:07:35,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:07:35,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (1/1) ... [2020-09-21 12:07:35,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:07:35,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:07:35,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:07:35,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:07:35,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (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 12:07:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:07:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:07:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:07:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:07:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:07:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:07:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:07:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:07:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:07:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:07:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:07:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:07:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:07:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:07:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:07:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:07:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:07:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:07:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:07:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:07:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:07:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:07:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:07:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:07:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:07:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:07:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:07:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:07:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:07:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:07:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:07:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:07:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:07:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:07:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:07:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:07:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:07:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:07:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:07:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:07:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:07:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:07:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:07:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:07:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:07:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:07:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:07:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:07:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:07:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:07:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:07:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:07:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:07:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:07:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:07:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:07:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:07:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:07:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:07:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:07:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:07:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:07:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:07:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:07:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:07:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:07:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:07:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:07:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:07:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:07:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:07:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:07:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:07:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:07:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:07:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:07:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:07:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:07:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:07:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:07:37,441 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:07:37,441 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:07:37,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:37 BoogieIcfgContainer [2020-09-21 12:07:37,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:07:37,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:07:37,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:07:37,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:07:37,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:07:35" (1/3) ... [2020-09-21 12:07:37,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d85955d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:37, skipping insertion in model container [2020-09-21 12:07:37,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:35" (2/3) ... [2020-09-21 12:07:37,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d85955d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:37, skipping insertion in model container [2020-09-21 12:07:37,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:37" (3/3) ... [2020-09-21 12:07:37,459 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-09-21 12:07:37,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:07:37,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:07:37,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:07:37,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:07:37,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:07:37,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:07:37,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:07:37,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:07:37,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:07:37,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:07:37,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:07:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-21 12:07:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:07:37,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:37,583 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] [2020-09-21 12:07:37,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:37,592 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-09-21 12:07:37,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:37,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599634665] [2020-09-21 12:07:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:07:38,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:07:38,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:07:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-21 12:07:39,423 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:07:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:39,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:39,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:39,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:07:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:39,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:39,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,604 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 12:07:39,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599634665] [2020-09-21 12:07:39,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:39,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:07:39,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714900253] [2020-09-21 12:07:39,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:07:39,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:39,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:07:39,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:39,636 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-09-21 12:07:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:40,982 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-09-21 12:07:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:07:40,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:07:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:41,003 INFO L225 Difference]: With dead ends: 338 [2020-09-21 12:07:41,004 INFO L226 Difference]: Without dead ends: 182 [2020-09-21 12:07:41,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:41,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-21 12:07:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-09-21 12:07:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-21 12:07:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-09-21 12:07:41,111 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-09-21 12:07:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:41,111 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-09-21 12:07:41,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:07:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-09-21 12:07:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:07:41,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:41,121 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] [2020-09-21 12:07:41,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:07:41,121 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-09-21 12:07:41,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:41,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202141363] [2020-09-21 12:07:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:42,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:42,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:07:42,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:42,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-09-21 12:07:42,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:07:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:42,976 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:07:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:43,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:43,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:43,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:43,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,152 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 12:07:43,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202141363] [2020-09-21 12:07:43,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:43,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:43,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255426373] [2020-09-21 12:07:43,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:43,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:43,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:43,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:43,158 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-09-21 12:07:43,650 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:44,726 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-09-21 12:07:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:44,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:07:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:44,735 INFO L225 Difference]: With dead ends: 267 [2020-09-21 12:07:44,735 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 12:07:44,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 12:07:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-09-21 12:07:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 12:07:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-09-21 12:07:44,794 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-09-21 12:07:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:44,794 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-09-21 12:07:44,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-09-21 12:07:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:07:44,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:44,797 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 12:07:44,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:07:44,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:44,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-09-21 12:07:44,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:44,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41634725] [2020-09-21 12:07:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:07:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:07:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:07:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:07:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:46,207 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-21 12:07:46,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:46,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:46,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:46,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:46,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:46,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:46,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:46,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:46,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:46,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:07:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:46,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:46,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:46,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:46,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:46,440 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 12:07:46,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41634725] [2020-09-21 12:07:46,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:46,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:46,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147811465] [2020-09-21 12:07:46,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:46,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:46,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:46,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:46,443 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-09-21 12:07:46,803 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:47,805 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-09-21 12:07:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:47,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:07:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:47,810 INFO L225 Difference]: With dead ends: 280 [2020-09-21 12:07:47,810 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 12:07:47,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 12:07:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-09-21 12:07:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 12:07:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-09-21 12:07:47,858 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-09-21 12:07:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:47,859 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-09-21 12:07:47,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-09-21 12:07:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 12:07:47,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:47,863 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 12:07:47,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:07:47,864 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:47,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:47,864 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-09-21 12:07:47,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:47,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082207940] [2020-09-21 12:07:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 12:07:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:07:48,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:07:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 12:07:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,273 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:49,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-21 12:07:49,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:49,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:49,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:49,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:49,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:49,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:49,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:07:49,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:07:49,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:07:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:07:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:07:49,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:07:49,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:49,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:49,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 12:07:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:49,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:49,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 12:07:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:49,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:49,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:49,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:49,652 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 12:07:49,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082207940] [2020-09-21 12:07:49,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:49,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:49,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481080624] [2020-09-21 12:07:49,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:49,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:49,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:49,655 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 8 states. [2020-09-21 12:07:50,156 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:51,161 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:51,604 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:53,007 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:53,298 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:53,782 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:54,432 INFO L93 Difference]: Finished difference Result 434 states and 561 transitions. [2020-09-21 12:07:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:07:54,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-21 12:07:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:54,439 INFO L225 Difference]: With dead ends: 434 [2020-09-21 12:07:54,439 INFO L226 Difference]: Without dead ends: 320 [2020-09-21 12:07:54,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:07:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-09-21 12:07:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 243. [2020-09-21 12:07:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-21 12:07:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2020-09-21 12:07:54,506 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 70 [2020-09-21 12:07:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:54,506 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2020-09-21 12:07:54,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2020-09-21 12:07:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 12:07:54,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:54,510 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 12:07:54,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:07:54,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:54,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:54,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1790325260, now seen corresponding path program 1 times [2020-09-21 12:07:54,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:54,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914529834] [2020-09-21 12:07:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-21 12:07:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:07:55,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-09-21 12:07:55,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-21 12:07:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,336 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:56,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:56,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:07:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:07:56,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:56,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:07:56,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 12:07:56,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:56,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:07:56,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:56,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:07:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:07:56,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:07:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:56,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 12:07:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:56,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:07:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:56,640 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 12:07:56,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914529834] [2020-09-21 12:07:56,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:56,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:56,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248229133] [2020-09-21 12:07:56,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:56,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:56,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:56,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:56,643 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand 8 states. [2020-09-21 12:07:57,005 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:58,384 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:59,424 INFO L93 Difference]: Finished difference Result 732 states and 938 transitions. [2020-09-21 12:07:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:07:59,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-09-21 12:07:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:59,431 INFO L225 Difference]: With dead ends: 732 [2020-09-21 12:07:59,431 INFO L226 Difference]: Without dead ends: 513 [2020-09-21 12:07:59,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:07:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-09-21 12:07:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 407. [2020-09-21 12:07:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-09-21 12:07:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 462 transitions. [2020-09-21 12:07:59,535 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 462 transitions. Word has length 74 [2020-09-21 12:07:59,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:59,535 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 462 transitions. [2020-09-21 12:07:59,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 462 transitions. [2020-09-21 12:07:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 12:07:59,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:59,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:59,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:07:59,539 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1587006907, now seen corresponding path program 1 times [2020-09-21 12:07:59,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:59,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289895500] [2020-09-21 12:07:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-21 12:08:00,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:08:00,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-21 12:08:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:00,844 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:00,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:08:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:00,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:00,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:00,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:00,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:00,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:00,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:00,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:00,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:00,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:00,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:08:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:00,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:00,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:00,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:08:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 12:08:01,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:08:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:08:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-21 12:08:01,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:08:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:08:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:08:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:08:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:08:01,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:08:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:01,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:08:01,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:08:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:01,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:01,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 12:08:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 12:08:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:08:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:01,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,429 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 12:08:01,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289895500] [2020-09-21 12:08:01,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:01,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:08:01,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265071185] [2020-09-21 12:08:01,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:08:01,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:08:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:08:01,433 INFO L87 Difference]: Start difference. First operand 407 states and 462 transitions. Second operand 8 states. [2020-09-21 12:08:02,387 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:02,696 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:03,004 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:04,401 INFO L93 Difference]: Finished difference Result 904 states and 1120 transitions. [2020-09-21 12:08:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:08:04,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-09-21 12:08:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:04,406 INFO L225 Difference]: With dead ends: 904 [2020-09-21 12:08:04,406 INFO L226 Difference]: Without dead ends: 521 [2020-09-21 12:08:04,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:08:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-09-21 12:08:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-09-21 12:08:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-09-21 12:08:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 470 transitions. [2020-09-21 12:08:04,497 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 470 transitions. Word has length 88 [2020-09-21 12:08:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:04,498 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 470 transitions. [2020-09-21 12:08:04,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:08:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 470 transitions. [2020-09-21 12:08:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 12:08:04,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:04,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:08:04,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:08:04,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-09-21 12:08:04,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:04,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711653586] [2020-09-21 12:08:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-21 12:08:05,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:08:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:08:05,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-21 12:08:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:08:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:05,847 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:05,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:08:05,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:05,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:05,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:05,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:05,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:08:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:05,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:05,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:08:06,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:08:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-21 12:08:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:08:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:08:06,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:08:06,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:08:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:08:06,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:08:06,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:08:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:06,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:08:06,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:08:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:06,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:06,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:06,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:06,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 12:08:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:06,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:08:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:08:06,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,440 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 12:08:06,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711653586] [2020-09-21 12:08:06,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:06,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:08:06,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855888412] [2020-09-21 12:08:06,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:08:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:08:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:08:06,444 INFO L87 Difference]: Start difference. First operand 415 states and 470 transitions. Second operand 9 states. [2020-09-21 12:08:06,947 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:08,287 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:08:08,591 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:08,940 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:08:09,286 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:08:09,641 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:11,147 INFO L93 Difference]: Finished difference Result 524 states and 650 transitions. [2020-09-21 12:08:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:08:11,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-09-21 12:08:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:11,152 INFO L225 Difference]: With dead ends: 524 [2020-09-21 12:08:11,152 INFO L226 Difference]: Without dead ends: 521 [2020-09-21 12:08:11,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:08:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-09-21 12:08:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-09-21 12:08:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-09-21 12:08:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2020-09-21 12:08:11,234 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 88 [2020-09-21 12:08:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:11,234 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2020-09-21 12:08:11,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:08:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2020-09-21 12:08:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 12:08:11,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:11,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:08:11,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:08:11,237 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:11,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:11,237 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-09-21 12:08:11,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:11,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548963509] [2020-09-21 12:08:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:11,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:08:11,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-21 12:08:11,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 12:08:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,221 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:12,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:08:12,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:12,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:12,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:12,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:12,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:12,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:12,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:12,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:08:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:12,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:12,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:08:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:08:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:08:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:08:12,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:08:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:12,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:08:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:08:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:12,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:08:12,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:08:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:12,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:12,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:08:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:12,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:12,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:08:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:12,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:12,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:12,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:12,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:12,732 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 12:08:12,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548963509] [2020-09-21 12:08:12,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:12,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:08:12,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025106418] [2020-09-21 12:08:12,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:08:12,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:08:12,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:08:12,735 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 9 states. [2020-09-21 12:08:13,797 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:14,132 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:08:14,448 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:14,766 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:16,185 INFO L93 Difference]: Finished difference Result 916 states and 1112 transitions. [2020-09-21 12:08:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:08:16,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-21 12:08:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:16,191 INFO L225 Difference]: With dead ends: 916 [2020-09-21 12:08:16,192 INFO L226 Difference]: Without dead ends: 525 [2020-09-21 12:08:16,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:08:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-09-21 12:08:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-09-21 12:08:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-21 12:08:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-09-21 12:08:16,288 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-09-21 12:08:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:16,289 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-09-21 12:08:16,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:08:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-09-21 12:08:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 12:08:16,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:16,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:08:16,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:08:16,293 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-09-21 12:08:16,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:16,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852169090] [2020-09-21 12:08:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:08:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:08:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:08:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:08:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:17,733 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:17,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:08:17,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:08:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:17,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:17,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:17,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:17,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:17,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:17,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:17,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:17,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:17,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:08:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:17,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:17,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:08:17,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:08:17,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:08:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:08:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:18,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:08:18,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:08:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:18,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:08:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:08:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:08:18,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:08:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:08:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:18,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:18,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:08:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:18,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:18,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:08:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:18,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:18,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:18,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:18,170 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 12:08:18,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852169090] [2020-09-21 12:08:18,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:18,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:08:18,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155961052] [2020-09-21 12:08:18,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:08:18,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:18,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:08:18,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:08:18,173 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 7 states. [2020-09-21 12:08:18,610 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:19,283 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:22,258 INFO L93 Difference]: Finished difference Result 1286 states and 1638 transitions. [2020-09-21 12:08:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:08:22,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-09-21 12:08:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:22,265 INFO L225 Difference]: With dead ends: 1286 [2020-09-21 12:08:22,265 INFO L226 Difference]: Without dead ends: 885 [2020-09-21 12:08:22,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:08:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-09-21 12:08:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-09-21 12:08:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-09-21 12:08:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 897 transitions. [2020-09-21 12:08:22,394 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 897 transitions. Word has length 89 [2020-09-21 12:08:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:22,394 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 897 transitions. [2020-09-21 12:08:22,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:08:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 897 transitions. [2020-09-21 12:08:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 12:08:22,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:22,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:08:22,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:08:22,397 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:22,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-09-21 12:08:22,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:22,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511695564] [2020-09-21 12:08:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:08:22,455 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:08:22,455 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:08:22,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:08:22,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:08:22 BoogieIcfgContainer [2020-09-21 12:08:22,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:08:22,508 INFO L168 Benchmark]: Toolchain (without parser) took 47370.97 ms. Allocated memory was 137.9 MB in the beginning and 744.5 MB in the end (delta: 606.6 MB). Free memory was 100.5 MB in the beginning and 595.3 MB in the end (delta: -494.9 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:22,519 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:08:22,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.11 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 170.7 MB in the end (delta: -71.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:22,525 INFO L168 Benchmark]: Boogie Preprocessor took 100.74 ms. Allocated memory is still 201.3 MB. Free memory was 170.7 MB in the beginning and 166.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:22,526 INFO L168 Benchmark]: RCFGBuilder took 1479.57 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 166.4 MB in the beginning and 195.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:22,527 INFO L168 Benchmark]: TraceAbstraction took 45056.46 ms. Allocated memory was 231.7 MB in the beginning and 744.5 MB in the end (delta: 512.8 MB). Free memory was 195.0 MB in the beginning and 595.3 MB in the end (delta: -400.4 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:22,537 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.11 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 170.7 MB in the end (delta: -71.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.74 ms. Allocated memory is still 201.3 MB. Free memory was 170.7 MB in the beginning and 166.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1479.57 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 166.4 MB in the beginning and 195.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45056.46 ms. Allocated memory was 231.7 MB in the beginning and 744.5 MB in the end (delta: 512.8 MB). Free memory was 195.0 MB in the beginning and 595.3 MB in the end (delta: -400.4 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 27.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1217 SDtfs, 2275 SDslu, 910 SDs, 0 SdLazy, 4877 SolverSat, 1479 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 234 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 706 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 736 NumberOfCodeBlocks, 736 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 199268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...