/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:13:50,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:13:50,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:13:50,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:13:50,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:13:50,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:13:50,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:13:50,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:13:50,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:13:50,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:13:50,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:13:50,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:13:50,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:13:50,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:13:50,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:13:50,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:13:50,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:13:50,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:13:50,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:13:50,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:13:50,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:13:50,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:13:50,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:13:50,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:13:50,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:13:50,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:13:50,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:13:50,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:13:50,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:13:50,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:13:50,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:13:50,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:13:50,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:13:50,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:13:50,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:13:50,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:13:50,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:13:50,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:13:50,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:13:50,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:13:50,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:13:50,703 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 [2020-08-22 01:13:50,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:13:50,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:13:50,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:13:50,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:13:50,727 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:13:50,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:13:50,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:13:50,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:13:50,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:13:50,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:13:50,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:13:50,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:13:50,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:13:50,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:13:50,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:13:50,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:13:50,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:13:50,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:13:50,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:13:50,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:13:50,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:13:50,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:13:50,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:13:50,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:13:50,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:13:50,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:13:50,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:13:50,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:13:50,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:13:50,732 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:13:51,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:13:51,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:13:51,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:13:51,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:13:51,057 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:13:51,058 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-22 01:13:51,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7a3ef4ef/582cb652c33d423885bc4d37fd1fe332/FLAGdd7a9f50a [2020-08-22 01:13:51,689 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:13:51,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-22 01:13:51,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7a3ef4ef/582cb652c33d423885bc4d37fd1fe332/FLAGdd7a9f50a [2020-08-22 01:13:51,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7a3ef4ef/582cb652c33d423885bc4d37fd1fe332 [2020-08-22 01:13:52,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:13:52,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:13:52,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:13:52,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:13:52,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:13:52,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:13:51" (1/1) ... [2020-08-22 01:13:52,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744e04a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52, skipping insertion in model container [2020-08-22 01:13:52,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:13:51" (1/1) ... [2020-08-22 01:13:52,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:13:52,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:13:52,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:13:52,603 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:13:52,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:13:52,718 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:13:52,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52 WrapperNode [2020-08-22 01:13:52,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:13:52,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:13:52,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:13:52,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:13:52,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (1/1) ... [2020-08-22 01:13:52,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:13:52,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:13:52,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:13:52,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:13:52,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (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 [2020-08-22 01:13:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:13:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:13:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:13:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 01:13:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 01:13:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:13:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:13:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:13:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:13:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:13:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:13:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:13:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:13:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:13:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:13:52,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:13:52,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:13:52,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:13:52,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:13:52,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:13:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:13:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:13:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:13:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:13:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:13:52,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:13:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:13:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:13:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:13:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:13:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:13:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:13:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:13:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:13:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:13:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:13:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:13:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:13:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:13:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:13:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:13:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:13:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:13:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 01:13:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 01:13:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:13:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:13:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:13:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:13:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:13:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:13:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:13:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:13:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:13:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:13:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:13:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:13:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:13:52,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:13:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:13:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:13:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:13:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:13:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:13:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:13:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:13:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:13:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:13:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:13:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:13:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:13:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:13:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:13:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:13:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:13:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 01:13:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:13:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:13:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:13:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:13:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:13:53,967 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:13:53,968 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:13:53,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:13:53 BoogieIcfgContainer [2020-08-22 01:13:53,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:13:53,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:13:53,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:13:53,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:13:53,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:13:51" (1/3) ... [2020-08-22 01:13:53,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6022b45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:13:53, skipping insertion in model container [2020-08-22 01:13:53,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:13:52" (2/3) ... [2020-08-22 01:13:53,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6022b45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:13:53, skipping insertion in model container [2020-08-22 01:13:53,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:13:53" (3/3) ... [2020-08-22 01:13:53,982 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-08-22 01:13:53,993 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:13:54,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:13:54,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:13:54,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:13:54,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:13:54,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:13:54,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:13:54,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:13:54,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:13:54,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:13:54,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:13:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-22 01:13:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:13:54,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:54,078 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] [2020-08-22 01:13:54,079 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2020-08-22 01:13:54,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:54,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135061085] [2020-08-22 01:13:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,774 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:13:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:13:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:54,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135061085] [2020-08-22 01:13:54,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:54,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:13:54,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282686237] [2020-08-22 01:13:54,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:13:54,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:13:54,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:13:54,915 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-08-22 01:13:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:56,310 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2020-08-22 01:13:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:13:56,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 01:13:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:56,329 INFO L225 Difference]: With dead ends: 344 [2020-08-22 01:13:56,329 INFO L226 Difference]: Without dead ends: 190 [2020-08-22 01:13:56,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:13:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-22 01:13:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2020-08-22 01:13:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 01:13:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-22 01:13:56,487 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2020-08-22 01:13:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:56,488 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-22 01:13:56,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:13:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-22 01:13:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 01:13:56,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:56,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:56,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:13:56,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:56,503 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2020-08-22 01:13:56,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:56,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570798079] [2020-08-22 01:13:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,880 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:56,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:13:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:13:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:56,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570798079] [2020-08-22 01:13:56,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:56,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:13:56,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261144255] [2020-08-22 01:13:56,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:13:56,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:56,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:13:56,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:13:56,970 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states. [2020-08-22 01:13:57,511 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:58,623 INFO L93 Difference]: Finished difference Result 289 states and 359 transitions. [2020-08-22 01:13:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:13:58,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 01:13:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:58,628 INFO L225 Difference]: With dead ends: 289 [2020-08-22 01:13:58,628 INFO L226 Difference]: Without dead ends: 180 [2020-08-22 01:13:58,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:13:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-22 01:13:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-22 01:13:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 01:13:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-22 01:13:58,678 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-22 01:13:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:58,679 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-22 01:13:58,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:13:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-22 01:13:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 01:13:58,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:58,681 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] [2020-08-22 01:13:58,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:13:58,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2020-08-22 01:13:58,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:58,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823048379] [2020-08-22 01:13:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,010 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:59,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:13:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:13:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:59,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823048379] [2020-08-22 01:13:59,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:59,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:13:59,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776901951] [2020-08-22 01:13:59,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:13:59,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:13:59,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:13:59,156 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states. [2020-08-22 01:13:59,641 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:59,921 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:00,160 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:00,406 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:01,918 INFO L93 Difference]: Finished difference Result 298 states and 374 transitions. [2020-08-22 01:14:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:14:01,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-22 01:14:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:01,925 INFO L225 Difference]: With dead ends: 298 [2020-08-22 01:14:01,925 INFO L226 Difference]: Without dead ends: 180 [2020-08-22 01:14:01,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:14:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-22 01:14:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-22 01:14:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 01:14:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-08-22 01:14:01,971 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2020-08-22 01:14:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:01,971 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-08-22 01:14:01,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:14:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-08-22 01:14:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 01:14:01,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:01,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:01,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:14:01,974 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2020-08-22 01:14:01,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:01,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683317943] [2020-08-22 01:14:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,300 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:14:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 01:14:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 01:14:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:14:02,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683317943] [2020-08-22 01:14:02,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:14:02,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:14:02,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611983779] [2020-08-22 01:14:02,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:14:02,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:02,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:14:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:14:02,430 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states. [2020-08-22 01:14:02,881 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:04,070 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:05,010 INFO L93 Difference]: Finished difference Result 403 states and 508 transitions. [2020-08-22 01:14:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:14:05,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-22 01:14:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:05,016 INFO L225 Difference]: With dead ends: 403 [2020-08-22 01:14:05,016 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 01:14:05,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:14:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 01:14:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2020-08-22 01:14:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 01:14:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2020-08-22 01:14:05,072 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2020-08-22 01:14:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:05,073 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2020-08-22 01:14:05,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:14:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2020-08-22 01:14:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 01:14:05,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:05,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:05,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:14:05,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2020-08-22 01:14:05,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:05,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791002179] [2020-08-22 01:14:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,354 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:14:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 01:14:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 01:14:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:14:05,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791002179] [2020-08-22 01:14:05,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:14:05,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:14:05,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083337333] [2020-08-22 01:14:05,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:14:05,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:05,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:14:05,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:14:05,463 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states. [2020-08-22 01:14:05,871 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:06,899 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:07,284 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:07,924 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:08,165 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:09,570 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2020-08-22 01:14:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 01:14:09,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 01:14:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:09,576 INFO L225 Difference]: With dead ends: 708 [2020-08-22 01:14:09,576 INFO L226 Difference]: Without dead ends: 497 [2020-08-22 01:14:09,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 01:14:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-08-22 01:14:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426. [2020-08-22 01:14:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-22 01:14:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2020-08-22 01:14:09,674 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2020-08-22 01:14:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:09,675 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2020-08-22 01:14:09,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:14:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2020-08-22 01:14:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 01:14:09,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:09,677 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] [2020-08-22 01:14:09,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:14:09,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:09,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2020-08-22 01:14:09,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:09,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262325972] [2020-08-22 01:14:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,010 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:14:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:14:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 01:14:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 01:14:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:14:10,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262325972] [2020-08-22 01:14:10,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:14:10,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:14:10,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045693099] [2020-08-22 01:14:10,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:14:10,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:10,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:14:10,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:14:10,171 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states. [2020-08-22 01:14:10,589 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:11,814 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:13,020 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:13,257 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:13,514 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:13,977 INFO L93 Difference]: Finished difference Result 930 states and 1135 transitions. [2020-08-22 01:14:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 01:14:13,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 01:14:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:13,982 INFO L225 Difference]: With dead ends: 930 [2020-08-22 01:14:13,983 INFO L226 Difference]: Without dead ends: 532 [2020-08-22 01:14:13,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-22 01:14:13,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-22 01:14:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425. [2020-08-22 01:14:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-22 01:14:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2020-08-22 01:14:14,069 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2020-08-22 01:14:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:14,070 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2020-08-22 01:14:14,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:14:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2020-08-22 01:14:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:14:14,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:14,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:14,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:14:14,073 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:14,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2020-08-22 01:14:14,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:14,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098399278] [2020-08-22 01:14:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,540 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:14:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:14:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:14:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:14:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:14:14,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098399278] [2020-08-22 01:14:14,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:14:14,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:14:14,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243735690] [2020-08-22 01:14:14,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:14:14,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:14,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:14:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:14:14,693 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states. [2020-08-22 01:14:15,581 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:15,804 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:16,046 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:16,299 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:17,681 INFO L93 Difference]: Finished difference Result 937 states and 1168 transitions. [2020-08-22 01:14:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:14:17,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-08-22 01:14:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:17,689 INFO L225 Difference]: With dead ends: 937 [2020-08-22 01:14:17,690 INFO L226 Difference]: Without dead ends: 540 [2020-08-22 01:14:17,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:14:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-08-22 01:14:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435. [2020-08-22 01:14:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-22 01:14:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2020-08-22 01:14:17,795 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2020-08-22 01:14:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:17,796 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2020-08-22 01:14:17,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:14:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2020-08-22 01:14:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:14:17,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:17,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:17,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:14:17,801 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:17,802 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2020-08-22 01:14:17,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:17,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384961770] [2020-08-22 01:14:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,084 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:14:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:14:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:14:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:14:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:14:18,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384961770] [2020-08-22 01:14:18,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:14:18,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:14:18,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860176908] [2020-08-22 01:14:18,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:14:18,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:18,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:14:18,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:14:18,266 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states. [2020-08-22 01:14:18,834 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:19,061 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:19,284 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:19,918 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:20,159 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:20,387 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:14:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:21,975 INFO L93 Difference]: Finished difference Result 957 states and 1190 transitions. [2020-08-22 01:14:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:14:21,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-22 01:14:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:21,979 INFO L225 Difference]: With dead ends: 957 [2020-08-22 01:14:21,980 INFO L226 Difference]: Without dead ends: 550 [2020-08-22 01:14:21,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:14:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-22 01:14:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443. [2020-08-22 01:14:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-22 01:14:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2020-08-22 01:14:22,062 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2020-08-22 01:14:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:22,063 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2020-08-22 01:14:22,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:14:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2020-08-22 01:14:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:14:22,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:22,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:22,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:14:22,066 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:22,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2020-08-22 01:14:22,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:22,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70913935] [2020-08-22 01:14:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,343 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:14:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:14:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:14:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:14:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:14:22,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70913935] [2020-08-22 01:14:22,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:14:22,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:14:22,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180835669] [2020-08-22 01:14:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:14:22,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:14:22,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:14:22,553 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states. [2020-08-22 01:14:23,117 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:23,877 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:26,405 INFO L93 Difference]: Finished difference Result 1296 states and 1667 transitions. [2020-08-22 01:14:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 01:14:26,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-08-22 01:14:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:26,412 INFO L225 Difference]: With dead ends: 1296 [2020-08-22 01:14:26,412 INFO L226 Difference]: Without dead ends: 881 [2020-08-22 01:14:26,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-22 01:14:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-22 01:14:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749. [2020-08-22 01:14:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-22 01:14:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions. [2020-08-22 01:14:26,561 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108 [2020-08-22 01:14:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:26,561 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 881 transitions. [2020-08-22 01:14:26,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:14:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions. [2020-08-22 01:14:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:14:26,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:26,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:26,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:14:26,564 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:26,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2020-08-22 01:14:26,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:26,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67168288] [2020-08-22 01:14:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,838 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:14:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:14:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:14:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:14:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 01:14:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:14:27,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67168288] [2020-08-22 01:14:27,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:14:27,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 01:14:27,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921921419] [2020-08-22 01:14:27,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 01:14:27,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:27,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 01:14:27,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:14:27,192 INFO L87 Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states. [2020-08-22 01:14:28,144 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:28,653 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:28,898 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:29,128 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:29,751 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:30,692 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:31,014 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:31,279 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:31,536 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:31,871 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:32,163 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:32,705 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-22 01:14:33,292 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-22 01:14:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:36,015 INFO L93 Difference]: Finished difference Result 1572 states and 1938 transitions. [2020-08-22 01:14:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 01:14:36,016 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-08-22 01:14:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:36,022 INFO L225 Difference]: With dead ends: 1572 [2020-08-22 01:14:36,022 INFO L226 Difference]: Without dead ends: 851 [2020-08-22 01:14:36,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 01:14:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-08-22 01:14:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728. [2020-08-22 01:14:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-22 01:14:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions. [2020-08-22 01:14:36,182 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112 [2020-08-22 01:14:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:36,182 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 846 transitions. [2020-08-22 01:14:36,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 01:14:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions. [2020-08-22 01:14:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-22 01:14:36,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:14:36,186 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:14:36,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:14:36,187 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:14:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:14:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times [2020-08-22 01:14:36,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:14:36,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184334839] [2020-08-22 01:14:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:14:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,497 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:14:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:14:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:14:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:14:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:14:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:14:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:14:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:14:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:14:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:14:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:14:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 01:14:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 01:14:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 01:14:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:14:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:14:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:14:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:14:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 01:14:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-22 01:14:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:14:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 01:14:36,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184334839] [2020-08-22 01:14:36,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:14:36,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 01:14:36,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151772446] [2020-08-22 01:14:36,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 01:14:36,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:14:36,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 01:14:36,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:14:36,911 INFO L87 Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states. [2020-08-22 01:14:37,642 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:37,975 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:38,243 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:38,497 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:14:39,251 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:14:40,326 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:40,664 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:40,949 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:41,224 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:41,626 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:41,908 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:43,130 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:43,388 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:43,678 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:43,934 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:14:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:14:45,151 INFO L93 Difference]: Finished difference Result 1341 states and 1663 transitions. [2020-08-22 01:14:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 01:14:45,152 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2020-08-22 01:14:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:14:45,153 INFO L225 Difference]: With dead ends: 1341 [2020-08-22 01:14:45,153 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 01:14:45,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 01:14:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 01:14:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 01:14:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 01:14:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 01:14:45,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-08-22 01:14:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:14:45,170 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 01:14:45,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 01:14:45,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 01:14:45,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 01:14:45,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:14:45,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 01:14:46,895 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 310 DAG size of output: 247 [2020-08-22 01:14:47,215 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-22 01:14:47,572 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-22 01:14:49,185 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 265