/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:05:34,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:05:34,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:05:34,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:05:34,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:05:34,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:05:34,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:05:34,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:05:34,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:05:34,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:05:34,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:05:34,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:05:34,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:05:34,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:05:34,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:05:34,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:05:34,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:05:34,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:05:34,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:05:34,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:05:34,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:05:34,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:05:34,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:05:34,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:05:34,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:05:34,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:05:34,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:05:34,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:05:34,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:05:34,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:05:34,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:05:34,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:05:34,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:05:34,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:05:34,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:05:34,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:05:34,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:05:34,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:05:34,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:05:34,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:05:34,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:05:34,636 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 11:05:34,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:05:34,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:05:34,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:05:34,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:05:34,664 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:05:34,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:05:34,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:05:34,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:05:34,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:05:34,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:05:34,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:05:34,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:05:34,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:05:34,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:05:34,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:05:34,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:05:34,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:05:34,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:05:34,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:05:34,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:05:34,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:05:34,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:05:34,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:05:34,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:05:34,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:05:34,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:05:34,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:05:34,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:05:34,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:05:34,670 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:05:35,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:05:35,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:05:35,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:05:35,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:05:35,197 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:05:35,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-21 11:05:35,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e21a56ab4/70458edf27d0470eae57ab4c01fc0e3e/FLAG2b8df5910 [2020-09-21 11:05:35,925 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:05:35,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-21 11:05:35,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e21a56ab4/70458edf27d0470eae57ab4c01fc0e3e/FLAG2b8df5910 [2020-09-21 11:05:36,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e21a56ab4/70458edf27d0470eae57ab4c01fc0e3e [2020-09-21 11:05:36,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:05:36,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:05:36,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:05:36,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:05:36,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:05:36,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:05:36" (1/1) ... [2020-09-21 11:05:36,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e77f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:36, skipping insertion in model container [2020-09-21 11:05:36,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:05:36" (1/1) ... [2020-09-21 11:05:36,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:05:36,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:05:36,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:05:36,861 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:05:37,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:05:37,043 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:05:37,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37 WrapperNode [2020-09-21 11:05:37,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:05:37,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:05:37,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:05:37,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:05:37,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (1/1) ... [2020-09-21 11:05:37,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:05:37,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:05:37,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:05:37,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:05:37,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (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 11:05:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:05:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:05:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:05:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:05:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:05:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:05:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:05:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:05:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:05:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:05:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:05:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:05:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:05:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 11:05:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:05:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:05:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:05:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:05:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:05:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:05:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:05:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:05:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:05:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:05:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:05:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:05:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:05:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:05:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:05:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:05:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:05:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:05:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:05:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:05:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:05:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:05:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:05:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:05:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:05:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:05:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:05:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:05:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:05:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:05:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:05:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:05:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:05:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:05:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:05:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:05:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:05:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:05:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:05:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:05:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:05:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:05:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:05:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:05:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:05:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:05:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:05:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:05:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:05:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:05:38,435 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:05:38,436 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:05:38,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:05:38 BoogieIcfgContainer [2020-09-21 11:05:38,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:05:38,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:05:38,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:05:38,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:05:38,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:05:36" (1/3) ... [2020-09-21 11:05:38,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254ff107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:05:38, skipping insertion in model container [2020-09-21 11:05:38,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:37" (2/3) ... [2020-09-21 11:05:38,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254ff107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:05:38, skipping insertion in model container [2020-09-21 11:05:38,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:05:38" (3/3) ... [2020-09-21 11:05:38,452 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-09-21 11:05:38,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:05:38,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:05:38,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:05:38,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:05:38,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:05:38,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:05:38,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:05:38,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:05:38,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:05:38,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:05:38,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:05:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-09-21 11:05:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:05:38,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:38,571 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 11:05:38,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:38,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 733672736, now seen corresponding path program 1 times [2020-09-21 11:05:38,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:38,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798312870] [2020-09-21 11:05:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:38,909 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:38,909 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:38,909 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:38,910 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:38,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 11:05:38,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:05:38,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:05:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-21 11:05:39,387 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,427 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:39,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:39,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:39,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,506 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,507 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,507 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,514 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,522 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,523 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:05:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,530 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,530 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,531 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:39,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:39,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:05:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:39,539 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:39,539 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:39,539 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:39,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:39,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:39,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:39,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:39,558 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 11:05:39,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798312870] [2020-09-21 11:05:39,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:39,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:05:39,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984800758] [2020-09-21 11:05:39,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:05:39,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:39,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:05:39,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:05:39,594 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-09-21 11:05:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:40,971 INFO L93 Difference]: Finished difference Result 352 states and 460 transitions. [2020-09-21 11:05:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:05:40,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 11:05:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:40,998 INFO L225 Difference]: With dead ends: 352 [2020-09-21 11:05:40,999 INFO L226 Difference]: Without dead ends: 190 [2020-09-21 11:05:41,005 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 11:05:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-21 11:05:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2020-09-21 11:05:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-21 11:05:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 182 transitions. [2020-09-21 11:05:41,147 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 182 transitions. Word has length 46 [2020-09-21 11:05:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:41,148 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 182 transitions. [2020-09-21 11:05:41,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:05:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 182 transitions. [2020-09-21 11:05:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:05:41,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:41,164 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 11:05:41,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:05:41,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:41,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1141201306, now seen corresponding path program 1 times [2020-09-21 11:05:41,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:41,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192599278] [2020-09-21 11:05:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:05:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:05:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:05:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,640 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,652 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,694 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:41,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,699 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,699 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,699 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:41,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,704 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,704 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:41,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,711 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,711 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:05:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,716 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,716 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:05:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:41,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:41,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:41,722 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:41,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:41,731 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 11:05:41,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192599278] [2020-09-21 11:05:41,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:41,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:05:41,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943544793] [2020-09-21 11:05:41,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:05:41,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:05:41,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:05:41,735 INFO L87 Difference]: Start difference. First operand 153 states and 182 transitions. Second operand 4 states. [2020-09-21 11:05:42,174 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:43,333 INFO L93 Difference]: Finished difference Result 275 states and 339 transitions. [2020-09-21 11:05:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:05:43,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 11:05:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:43,338 INFO L225 Difference]: With dead ends: 275 [2020-09-21 11:05:43,338 INFO L226 Difference]: Without dead ends: 174 [2020-09-21 11:05:43,340 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 11:05:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-21 11:05:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 144. [2020-09-21 11:05:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-21 11:05:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-09-21 11:05:43,404 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 47 [2020-09-21 11:05:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:43,404 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-09-21 11:05:43,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:05:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-09-21 11:05:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:05:43,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:43,406 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 11:05:43,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:05:43,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:43,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:43,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1705860394, now seen corresponding path program 1 times [2020-09-21 11:05:43,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:43,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443407365] [2020-09-21 11:05:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:43,774 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:05:43,774 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:43,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:43,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:05:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-21 11:05:43,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:05:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:05:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:44,085 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:44,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:05:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:44,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,203 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,203 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,209 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,209 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,209 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:44,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:44,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,222 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:05:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,229 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:44,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:05:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,235 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,235 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,235 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:44,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:44,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:44,247 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 11:05:44,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443407365] [2020-09-21 11:05:44,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:44,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:05:44,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950535669] [2020-09-21 11:05:44,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:05:44,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:05:44,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:05:44,250 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 4 states. [2020-09-21 11:05:44,655 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:46,814 INFO L93 Difference]: Finished difference Result 428 states and 532 transitions. [2020-09-21 11:05:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:05:46,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 11:05:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:46,828 INFO L225 Difference]: With dead ends: 428 [2020-09-21 11:05:46,828 INFO L226 Difference]: Without dead ends: 308 [2020-09-21 11:05:46,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:05:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-09-21 11:05:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 254. [2020-09-21 11:05:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-21 11:05:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 307 transitions. [2020-09-21 11:05:46,911 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 307 transitions. Word has length 52 [2020-09-21 11:05:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:46,912 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 307 transitions. [2020-09-21 11:05:46,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:05:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 307 transitions. [2020-09-21 11:05:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:05:46,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:46,914 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] [2020-09-21 11:05:46,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:05:46,915 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash -986744431, now seen corresponding path program 1 times [2020-09-21 11:05:46,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:46,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74326136] [2020-09-21 11:05:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,265 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:05:47,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-21 11:05:47,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:05:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 11:05:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:47,620 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,682 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,683 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,683 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:47,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:05:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,724 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,724 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,725 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:47,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,731 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,731 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,738 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,739 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,739 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:47,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:47,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,747 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:47,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:47,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:05:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,768 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,769 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:47,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:05:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:47,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:47,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:05:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:47,807 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:47,807 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:47,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:47,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:47,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:47,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:47,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:47,853 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 11:05:47,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74326136] [2020-09-21 11:05:47,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:47,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:05:47,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537886736] [2020-09-21 11:05:47,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:05:47,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:05:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:05:47,856 INFO L87 Difference]: Start difference. First operand 254 states and 307 transitions. Second operand 8 states. [2020-09-21 11:05:48,326 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:49,351 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:05:49,923 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:50,241 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:50,542 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:51,309 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:52,883 INFO L93 Difference]: Finished difference Result 819 states and 1060 transitions. [2020-09-21 11:05:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:05:52,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 11:05:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:52,889 INFO L225 Difference]: With dead ends: 819 [2020-09-21 11:05:52,890 INFO L226 Difference]: Without dead ends: 589 [2020-09-21 11:05:52,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 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 11:05:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-09-21 11:05:52,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 469. [2020-09-21 11:05:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-09-21 11:05:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 572 transitions. [2020-09-21 11:05:53,003 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 572 transitions. Word has length 57 [2020-09-21 11:05:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:53,004 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 572 transitions. [2020-09-21 11:05:53,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:05:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 572 transitions. [2020-09-21 11:05:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:05:53,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:53,007 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] [2020-09-21 11:05:53,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:05:53,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:53,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1925248939, now seen corresponding path program 1 times [2020-09-21 11:05:53,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:53,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134932848] [2020-09-21 11:05:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:53,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:53,602 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:53,602 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:53,603 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:53,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 11:05:53,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-21 11:05:53,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:05:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 11:05:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:53,924 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,004 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 11:05:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,036 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:54,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,042 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,042 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,042 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:54,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,047 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,047 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:54,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,053 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,053 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,054 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,054 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,070 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,070 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,071 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:05:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:05:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,099 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,100 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,100 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,100 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:54,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:05:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:54,109 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:54,109 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:54,109 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:54,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:54,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:54,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:54,140 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 11:05:54,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134932848] [2020-09-21 11:05:54,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:54,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:05:54,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944213119] [2020-09-21 11:05:54,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:05:54,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:05:54,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:05:54,144 INFO L87 Difference]: Start difference. First operand 469 states and 572 transitions. Second operand 9 states. [2020-09-21 11:05:54,595 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:55,762 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:05:56,195 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:56,511 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:57,325 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:57,718 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:59,259 INFO L93 Difference]: Finished difference Result 1370 states and 1837 transitions. [2020-09-21 11:05:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:05:59,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-21 11:05:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:59,268 INFO L225 Difference]: With dead ends: 1370 [2020-09-21 11:05:59,268 INFO L226 Difference]: Without dead ends: 925 [2020-09-21 11:05:59,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:05:59,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-09-21 11:05:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 761. [2020-09-21 11:05:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-09-21 11:05:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 940 transitions. [2020-09-21 11:05:59,422 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 940 transitions. Word has length 61 [2020-09-21 11:05:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:59,422 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 940 transitions. [2020-09-21 11:05:59,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:05:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 940 transitions. [2020-09-21 11:05:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 11:05:59,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:59,425 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 11:05:59,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:05:59,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:59,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1051920088, now seen corresponding path program 1 times [2020-09-21 11:05:59,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:59,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905501979] [2020-09-21 11:05:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,480 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,480 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 11:05:59,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:59,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 11:05:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:59,740 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:59,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,752 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,752 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,752 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,752 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:59,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,802 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,803 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,803 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:59,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:59,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,811 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,812 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:59,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,831 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,832 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,832 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:05:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,839 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,840 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,840 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:59,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,855 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,856 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,856 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:59,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:59,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,886 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,887 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,887 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,887 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 11:05:59,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:59,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 11:05:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,913 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,913 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,914 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:59,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:05:59,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:05:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:59,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:59,934 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:59,934 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:59,935 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:59,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:59,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:05:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:00,010 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:00,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:00,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:00,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:00,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:06:00,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:06:00,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:06:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:06:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:06:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:00,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:00,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:00,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:06:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:06:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:00,060 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:00,061 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:00,061 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:00,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:00,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:00,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:00,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 11:06:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:00,069 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:00,069 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:00,070 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:00,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:00,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 11:06:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:00,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:00,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:00,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:00,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:00,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:00,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:00,090 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 11:06:00,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905501979] [2020-09-21 11:06:00,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:06:00,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:06:00,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342430055] [2020-09-21 11:06:00,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:06:00,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:06:00,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:06:00,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:06:00,093 INFO L87 Difference]: Start difference. First operand 761 states and 940 transitions. Second operand 9 states. [2020-09-21 11:06:01,376 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:06:01,701 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 11:06:02,025 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:06:02,392 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 11:06:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:06:03,750 INFO L93 Difference]: Finished difference Result 1709 states and 2252 transitions. [2020-09-21 11:06:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:06:03,751 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-21 11:06:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:06:03,762 INFO L225 Difference]: With dead ends: 1709 [2020-09-21 11:06:03,762 INFO L226 Difference]: Without dead ends: 972 [2020-09-21 11:06:03,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:06:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-21 11:06:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 787. [2020-09-21 11:06:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-09-21 11:06:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 968 transitions. [2020-09-21 11:06:03,908 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 968 transitions. Word has length 89 [2020-09-21 11:06:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:06:03,909 INFO L479 AbstractCegarLoop]: Abstraction has 787 states and 968 transitions. [2020-09-21 11:06:03,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:06:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 968 transitions. [2020-09-21 11:06:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 11:06:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:06:03,912 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 11:06:03,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:06:03,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:06:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:06:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1326679702, now seen corresponding path program 1 times [2020-09-21 11:06:03,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:06:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801198501] [2020-09-21 11:06:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:06:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:03,965 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:06:03,965 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -60 [2020-09-21 11:06:03,965 FATAL L256 erpolLogProxyWrapper]: Difference in width: 60 [2020-09-21 11:06:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:03,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 11:06:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:06:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:06:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-21 11:06:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:04,279 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:06:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:06:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,288 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,289 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:04,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:06:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,332 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,332 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,332 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,333 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:06:04,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:06:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,338 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,339 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:06:04,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:06:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,344 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,344 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,344 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:04,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:06:04,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:06:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,350 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,350 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,351 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:06:04,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:06:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,362 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:04,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:06:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,387 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 11:06:04,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:06:04,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:06:04,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:06:04,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,406 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:06:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:06:04,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:06:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:06:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,424 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,425 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,425 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,425 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:06:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:06:04,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:06:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:06:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,440 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,441 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:06:04,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:06:04,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:06:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:06:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:06:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:06:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:06:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:06:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:06:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 11:06:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,507 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,508 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,508 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:04,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 11:06:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:04,513 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:04,513 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:04,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:04,534 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 11:06:04,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801198501] [2020-09-21 11:06:04,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:06:04,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:06:04,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661358073] [2020-09-21 11:06:04,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:06:04,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:06:04,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:06:04,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:06:04,537 INFO L87 Difference]: Start difference. First operand 787 states and 968 transitions. Second operand 8 states. [2020-09-21 11:06:05,538 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:06:05,910 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:06:06,229 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:06:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:06:07,618 INFO L93 Difference]: Finished difference Result 1763 states and 2365 transitions. [2020-09-21 11:06:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:06:07,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-09-21 11:06:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:06:07,626 INFO L225 Difference]: With dead ends: 1763 [2020-09-21 11:06:07,627 INFO L226 Difference]: Without dead ends: 1000 [2020-09-21 11:06:07,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:06:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-09-21 11:06:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 803. [2020-09-21 11:06:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-09-21 11:06:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 984 transitions. [2020-09-21 11:06:07,781 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 984 transitions. Word has length 89 [2020-09-21 11:06:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:06:07,781 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 984 transitions. [2020-09-21 11:06:07,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:06:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 984 transitions. [2020-09-21 11:06:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 11:06:07,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:06:07,784 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 11:06:07,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:06:07,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:06:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:06:07,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1017987339, now seen corresponding path program 1 times [2020-09-21 11:06:07,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:06:07,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950654874] [2020-09-21 11:06:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:06:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 11:06:08,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-21 11:06:08,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:06:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 11:06:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,444 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:06:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:06:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:08,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 11:06:08,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:06:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:06:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,547 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,547 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:06:08,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:06:08,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:06:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:06:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,552 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,553 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,553 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,553 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:06:08,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:06:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:06:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:08,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:08,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:06:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,568 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,568 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:06:08,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:06:08,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:06:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:06:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,582 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:08,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:08,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:06:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,606 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 11:06:08,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:06:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:06:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:06:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,635 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,636 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,636 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,636 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:06:08,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:06:08,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:06:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,661 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:06:08,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:06:08,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:06:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:06:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,681 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,681 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,681 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,681 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:06:08,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:08,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:06:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:06:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,699 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,699 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,699 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:06:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:06:08,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:06:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:06:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:06:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:08,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:06:08,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:06:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:06:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:06:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 11:06:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,726 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:08,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:08,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 11:06:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:06:08,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:06:08,732 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:06:08,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:06:08,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:06:08,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:06:08,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:06:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:06:08,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:06:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:06:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:06:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:06:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:06:08,748 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 11:06:08,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950654874] [2020-09-21 11:06:08,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:06:08,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:06:08,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483316608] [2020-09-21 11:06:08,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:06:08,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:06:08,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:06:08,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:06:08,754 INFO L87 Difference]: Start difference. First operand 803 states and 984 transitions. Second operand 7 states. [2020-09-21 11:06:09,154 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:06:09,773 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:06:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:06:13,014 INFO L93 Difference]: Finished difference Result 2571 states and 3470 transitions. [2020-09-21 11:06:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:06:13,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-09-21 11:06:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:06:13,027 INFO L225 Difference]: With dead ends: 2571 [2020-09-21 11:06:13,028 INFO L226 Difference]: Without dead ends: 1792 [2020-09-21 11:06:13,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:06:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-09-21 11:06:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1541. [2020-09-21 11:06:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-09-21 11:06:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1902 transitions. [2020-09-21 11:06:13,296 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1902 transitions. Word has length 89 [2020-09-21 11:06:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:06:13,297 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1902 transitions. [2020-09-21 11:06:13,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:06:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1902 transitions. [2020-09-21 11:06:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 11:06:13,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:06:13,300 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 11:06:13,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:06:13,301 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:06:13,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:06:13,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1174397627, now seen corresponding path program 1 times [2020-09-21 11:06:13,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:06:13,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930030310] [2020-09-21 11:06:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:06:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:06:13,362 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:06:13,363 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:06:13,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:06:13,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:06:13 BoogieIcfgContainer [2020-09-21 11:06:13,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:06:13,399 INFO L168 Benchmark]: Toolchain (without parser) took 37114.09 ms. Allocated memory was 137.9 MB in the beginning and 744.5 MB in the end (delta: 606.6 MB). Free memory was 99.7 MB in the beginning and 154.2 MB in the end (delta: -54.5 MB). Peak memory consumption was 552.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:06:13,400 INFO L168 Benchmark]: CDTParser took 0.88 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:06:13,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.90 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.0 MB in the beginning and 165.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:06:13,402 INFO L168 Benchmark]: Boogie Preprocessor took 132.65 ms. Allocated memory is still 199.8 MB. Free memory was 165.4 MB in the beginning and 160.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:06:13,403 INFO L168 Benchmark]: RCFGBuilder took 1264.96 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 160.6 MB in the beginning and 186.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:06:13,404 INFO L168 Benchmark]: TraceAbstraction took 34953.89 ms. Allocated memory was 230.2 MB in the beginning and 744.5 MB in the end (delta: 514.3 MB). Free memory was 186.4 MB in the beginning and 154.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 546.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:06:13,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.90 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.0 MB in the beginning and 165.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.65 ms. Allocated memory is still 199.8 MB. Free memory was 165.4 MB in the beginning and 160.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1264.96 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 160.6 MB in the beginning and 186.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34953.89 ms. Allocated memory was 230.2 MB in the beginning and 744.5 MB in the end (delta: 514.3 MB). Free memory was 186.4 MB in the beginning and 154.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 546.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L884] int retValue_acc ; [L885] int tmp ; [L889] FCALL select_helpers() [L890] FCALL select_features() [L891] CALL, EXPR valid_product() [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); [L891] RET, EXPR valid_product() [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) [L895] FCALL setup() [L896] CALL runTest() [L878] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) [L444] CALL changeMethaneLevel() [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 [L444] RET changeMethaneLevel() [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND FALSE !(\read(tmp___1)) [L469] CALL timeShift() [L498] COND FALSE !(\read(pumpRunning)) [L505] COND TRUE \read(systemActive) [L507] CALL processEnvironment() [L579] int tmp ; [L582] COND FALSE !(\read(pumpRunning)) [L597] CALL processEnvironment__wrappee__lowWaterSensor() [L553] int tmp ; [L556] COND FALSE !(\read(pumpRunning)) [L571] CALL processEnvironment__wrappee__highWaterSensor() [L527] int tmp ; [L530] COND TRUE ! pumpRunning [L532] CALL, EXPR isHighWaterLevel() [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; [L682] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); [L682] RET, EXPR isHighWaterSensorDry() [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); [L532] RET, EXPR isHighWaterLevel() [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) [L536] CALL activatePump() [L607] pumpRunning = 1 [L536] RET activatePump() [L571] RET processEnvironment__wrappee__highWaterSensor() [L597] RET processEnvironment__wrappee__lowWaterSensor() [L507] RET processEnvironment() [L513] CALL __utac_acc__Specification1_spec__1() [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isMethaneLevelCritical() [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); [L782] RET, EXPR isMethaneLevelCritical() [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) [L786] CALL, EXPR isPumpRunning() [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); [L786] RET, EXPR isPumpRunning() [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) [L790] CALL __automaton_fail() [L806] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 26.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1136 SDtfs, 1871 SDslu, 920 SDs, 0 SdLazy, 4796 SolverSat, 1229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 262 GetRequests, 185 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1541occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1038 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 157882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...