/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=LOWLEXORDER --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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:57:30,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:57:30,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:57:30,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:57:30,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:57:30,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:57:30,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:57:30,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:57:30,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:57:30,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:57:30,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:57:30,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:57:30,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:57:30,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:57:30,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:57:30,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:57:30,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:57:30,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:57:30,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:57:30,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:57:30,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:57:30,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:57:30,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:57:30,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:57:30,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:57:30,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:57:30,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:57:30,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:57:30,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:57:30,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:57:30,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:57:30,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:57:30,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:57:30,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:57:30,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:57:30,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:57:30,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:57:30,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:57:30,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:57:30,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:57:30,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:57:30,999 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 [2020-08-21 17:57:31,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:57:31,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:57:31,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:57:31,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:57:31,023 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:57:31,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:57:31,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:57:31,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:57:31,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:57:31,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:57:31,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:57:31,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:57:31,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:57:31,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:57:31,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:57:31,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:57:31,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:57:31,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:57:31,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:57:31,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:57:31,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:57:31,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:57:31,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:57:31,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:57:31,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:57:31,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:57:31,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:57:31,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:57:31,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:57:31,031 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:57:31,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:57:31,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:57:31,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:57:31,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:57:31,342 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:57:31,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-21 17:57:31,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b62e2253b/4fa9443cb331467eb70d53ea43e6a7f6/FLAG9894d2047 [2020-08-21 17:57:31,951 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:57:31,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-21 17:57:31,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b62e2253b/4fa9443cb331467eb70d53ea43e6a7f6/FLAG9894d2047 [2020-08-21 17:57:32,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b62e2253b/4fa9443cb331467eb70d53ea43e6a7f6 [2020-08-21 17:57:32,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:57:32,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:57:32,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:57:32,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:57:32,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:57:32,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e399bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32, skipping insertion in model container [2020-08-21 17:57:32,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:57:32,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:57:32,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:57:32,754 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:57:32,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:57:32,873 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:57:32,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32 WrapperNode [2020-08-21 17:57:32,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:57:32,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:57:32,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:57:32,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:57:32,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:32,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:33,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (1/1) ... [2020-08-21 17:57:33,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:57:33,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:57:33,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:57:33,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:57:33,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (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 [2020-08-21 17:57:33,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:57:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:57:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:57:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:57:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:57:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:57:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:57:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:57:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:57:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:57:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:57:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:57:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:57:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:57:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:57:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:57:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:57:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:57:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:57:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:57:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:57:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:57:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:57:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:57:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:57:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:57:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:57:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:57:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:57:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:57:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:57:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:57:33,081 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:57:33,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:57:33,081 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:57:33,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:57:33,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:57:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:57:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:57:33,082 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:57:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:57:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:57:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:57:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:57:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:57:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:57:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:57:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:57:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:57:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:57:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:57:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:57:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:57:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:57:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:57:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:57:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:57:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:57:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:57:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:57:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:57:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:57:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:57:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:57:34,057 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:57:34,057 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:57:34,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:34 BoogieIcfgContainer [2020-08-21 17:57:34,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:57:34,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:57:34,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:57:34,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:57:34,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:57:32" (1/3) ... [2020-08-21 17:57:34,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2981ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:34, skipping insertion in model container [2020-08-21 17:57:34,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:32" (2/3) ... [2020-08-21 17:57:34,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2981ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:34, skipping insertion in model container [2020-08-21 17:57:34,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:34" (3/3) ... [2020-08-21 17:57:34,070 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-21 17:57:34,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:57:34,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:57:34,101 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:57:34,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:57:34,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:57:34,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:57:34,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:57:34,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:57:34,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:57:34,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:57:34,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:57:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-21 17:57:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:57:34,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:34,159 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] [2020-08-21 17:57:34,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-21 17:57:34,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:34,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77356064] [2020-08-21 17:57:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,830 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:57:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:57:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:34,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77356064] [2020-08-21 17:57:34,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:34,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:57:34,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078937672] [2020-08-21 17:57:34,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:57:34,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:34,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:57:34,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:57:34,958 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-21 17:57:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:36,059 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-21 17:57:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:57:36,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 17:57:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:36,076 INFO L225 Difference]: With dead ends: 343 [2020-08-21 17:57:36,076 INFO L226 Difference]: Without dead ends: 190 [2020-08-21 17:57:36,081 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 [2020-08-21 17:57:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-21 17:57:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-21 17:57:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-21 17:57:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-21 17:57:36,211 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-21 17:57:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:36,212 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-21 17:57:36,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:57:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-21 17:57:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:57:36,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:36,225 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] [2020-08-21 17:57:36,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:57:36,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-21 17:57:36,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:36,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986843820] [2020-08-21 17:57:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,583 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:57:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:57:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:36,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986843820] [2020-08-21 17:57:36,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:36,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:57:36,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627562812] [2020-08-21 17:57:36,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:57:36,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:36,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:57:36,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:57:36,638 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-21 17:57:37,082 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:38,161 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-21 17:57:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:57:38,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 17:57:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:38,166 INFO L225 Difference]: With dead ends: 282 [2020-08-21 17:57:38,166 INFO L226 Difference]: Without dead ends: 180 [2020-08-21 17:57:38,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:57:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-21 17:57:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-21 17:57:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-21 17:57:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-21 17:57:38,232 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-21 17:57:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:38,233 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-21 17:57:38,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:57:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-21 17:57:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 17:57:38,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:38,238 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] [2020-08-21 17:57:38,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:57:38,239 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:38,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-21 17:57:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:38,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426820256] [2020-08-21 17:57:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,648 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:57:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:57:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:38,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426820256] [2020-08-21 17:57:38,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:38,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:57:38,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360460324] [2020-08-21 17:57:38,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:57:38,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:38,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:57:38,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:57:38,760 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-21 17:57:39,170 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:39,484 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:39,722 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:39,963 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:40,698 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:42,867 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-21 17:57:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:57:42,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 17:57:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:42,873 INFO L225 Difference]: With dead ends: 487 [2020-08-21 17:57:42,873 INFO L226 Difference]: Without dead ends: 370 [2020-08-21 17:57:42,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:57:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-21 17:57:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-21 17:57:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 17:57:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-21 17:57:42,947 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-21 17:57:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:42,948 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-21 17:57:42,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:57:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-21 17:57:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 17:57:42,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:42,950 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] [2020-08-21 17:57:42,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:57:42,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:42,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-21 17:57:42,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:42,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175996095] [2020-08-21 17:57:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,235 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:57:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:57:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 17:57:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:43,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175996095] [2020-08-21 17:57:43,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:43,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:57:43,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193320213] [2020-08-21 17:57:43,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:57:43,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:43,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:57:43,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:57:43,356 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-21 17:57:43,762 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:44,652 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:45,110 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:45,408 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:45,661 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:47,292 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-21 17:57:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 17:57:47,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 17:57:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:47,300 INFO L225 Difference]: With dead ends: 973 [2020-08-21 17:57:47,300 INFO L226 Difference]: Without dead ends: 696 [2020-08-21 17:57:47,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 17:57:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-21 17:57:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-21 17:57:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-21 17:57:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-21 17:57:47,440 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-21 17:57:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:47,441 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-21 17:57:47,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:57:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-21 17:57:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 17:57:47,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:47,444 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] [2020-08-21 17:57:47,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:57:47,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:47,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-21 17:57:47,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:47,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835803073] [2020-08-21 17:57:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,764 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:57:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:57:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:57:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:47,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835803073] [2020-08-21 17:57:47,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:47,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:57:47,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477858694] [2020-08-21 17:57:47,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:57:47,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:57:47,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:57:47,861 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-21 17:57:48,380 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:49,316 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:49,620 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:49,866 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:50,561 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:51,990 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-21 17:57:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 17:57:51,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 17:57:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:51,998 INFO L225 Difference]: With dead ends: 1531 [2020-08-21 17:57:51,999 INFO L226 Difference]: Without dead ends: 1001 [2020-08-21 17:57:52,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:57:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-21 17:57:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-21 17:57:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-21 17:57:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-21 17:57:52,197 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-21 17:57:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:52,197 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-21 17:57:52,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:57:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-21 17:57:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:57:52,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:52,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:52,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:57:52,202 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-21 17:57:52,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:52,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324545796] [2020-08-21 17:57:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,476 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:57:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:57:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:57:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:52,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324545796] [2020-08-21 17:57:52,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:52,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:57:52,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215497205] [2020-08-21 17:57:52,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:57:52,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:52,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:57:52,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:57:52,674 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-21 17:57:53,823 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:54,071 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:57:54,314 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:54,550 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:55,969 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-21 17:57:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:57:55,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 17:57:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:55,980 INFO L225 Difference]: With dead ends: 1854 [2020-08-21 17:57:55,981 INFO L226 Difference]: Without dead ends: 1077 [2020-08-21 17:57:55,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:57:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-21 17:57:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-21 17:57:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-21 17:57:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-21 17:57:56,160 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-21 17:57:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:56,160 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-21 17:57:56,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:57:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-21 17:57:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:57:56,163 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:56,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:56,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:57:56,164 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-21 17:57:56,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:56,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267308744] [2020-08-21 17:57:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,456 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:57:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:57:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:57:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:56,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267308744] [2020-08-21 17:57:56,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:56,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:57:56,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295856475] [2020-08-21 17:57:56,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:57:56,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:57:56,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:57:56,637 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-21 17:57:57,157 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:57,392 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:57,612 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:58,351 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:58,619 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:58,865 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:00,390 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-21 17:58:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:58:00,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-21 17:58:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:00,404 INFO L225 Difference]: With dead ends: 1908 [2020-08-21 17:58:00,404 INFO L226 Difference]: Without dead ends: 1105 [2020-08-21 17:58:00,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:58:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-21 17:58:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-21 17:58:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 17:58:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-21 17:58:00,616 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-21 17:58:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:00,617 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-21 17:58:00,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:58:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-21 17:58:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:58:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:00,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:00,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:58:00,619 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-21 17:58:00,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:00,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281502366] [2020-08-21 17:58:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,882 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:58:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:58:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:58:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:58:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:01,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281502366] [2020-08-21 17:58:01,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:01,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:58:01,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866374267] [2020-08-21 17:58:01,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:58:01,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:01,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:58:01,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:58:01,044 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-21 17:58:01,385 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:01,888 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:04,646 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-21 17:58:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:58:04,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 17:58:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:04,660 INFO L225 Difference]: With dead ends: 2850 [2020-08-21 17:58:04,660 INFO L226 Difference]: Without dead ends: 2031 [2020-08-21 17:58:04,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 17:58:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-21 17:58:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-21 17:58:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 17:58:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-21 17:58:04,981 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-21 17:58:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:04,981 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-21 17:58:04,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:58:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-21 17:58:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 17:58:04,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:04,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:04,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:58:04,987 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:04,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-21 17:58:04,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:04,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447323144] [2020-08-21 17:58:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,238 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:58:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 17:58:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:58:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:05,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447323144] [2020-08-21 17:58:05,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:05,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:58:05,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300609641] [2020-08-21 17:58:05,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:58:05,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:58:05,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:58:05,404 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-21 17:58:05,919 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:09,101 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-21 17:58:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 17:58:09,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-21 17:58:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:09,124 INFO L225 Difference]: With dead ends: 3406 [2020-08-21 17:58:09,124 INFO L226 Difference]: Without dead ends: 3403 [2020-08-21 17:58:09,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:58:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-21 17:58:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-21 17:58:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-21 17:58:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-21 17:58:09,729 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-21 17:58:09,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:09,731 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-21 17:58:09,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:58:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-21 17:58:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 17:58:09,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:09,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2020-08-21 17:58:09,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:58:09,741 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:09,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:09,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1898255401, now seen corresponding path program 1 times [2020-08-21 17:58:09,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:09,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293461969] [2020-08-21 17:58:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,086 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 17:58:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 17:58:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:58:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 17:58:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 17:58:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-21 17:58:10,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293461969] [2020-08-21 17:58:10,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:10,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 17:58:10,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904441544] [2020-08-21 17:58:10,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 17:58:10,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:10,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 17:58:10,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:58:10,440 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 15 states. [2020-08-21 17:58:11,359 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:11,669 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:11,877 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:12,381 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:12,708 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:13,022 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:14,830 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:15,132 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:18,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:18,220 INFO L93 Difference]: Finished difference Result 5813 states and 7558 transitions. [2020-08-21 17:58:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-08-21 17:58:18,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 175 [2020-08-21 17:58:18,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:18,237 INFO L225 Difference]: With dead ends: 5813 [2020-08-21 17:58:18,238 INFO L226 Difference]: Without dead ends: 3015 [2020-08-21 17:58:18,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=695, Invalid=3727, Unknown=0, NotChecked=0, Total=4422 [2020-08-21 17:58:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-08-21 17:58:18,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2662. [2020-08-21 17:58:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-08-21 17:58:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3098 transitions. [2020-08-21 17:58:18,759 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3098 transitions. Word has length 175 [2020-08-21 17:58:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:18,760 INFO L479 AbstractCegarLoop]: Abstraction has 2662 states and 3098 transitions. [2020-08-21 17:58:18,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 17:58:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3098 transitions. [2020-08-21 17:58:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-21 17:58:18,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:18,768 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-08-21 17:58:18,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:58:18,768 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:18,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-21 17:58:18,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:18,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481776654] [2020-08-21 17:58:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,054 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 17:58:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 17:58:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-21 17:58:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 17:58:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-21 17:58:19,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481776654] [2020-08-21 17:58:19,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:19,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:58:19,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306496780] [2020-08-21 17:58:19,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:58:19,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:19,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:58:19,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:58:19,295 INFO L87 Difference]: Start difference. First operand 2662 states and 3098 transitions. Second operand 10 states. [2020-08-21 17:58:20,165 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:21,876 INFO L93 Difference]: Finished difference Result 3277 states and 3955 transitions. [2020-08-21 17:58:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 17:58:21,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-21 17:58:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:21,888 INFO L225 Difference]: With dead ends: 3277 [2020-08-21 17:58:21,889 INFO L226 Difference]: Without dead ends: 1158 [2020-08-21 17:58:21,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 17:58:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2020-08-21 17:58:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 923. [2020-08-21 17:58:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-08-21 17:58:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1059 transitions. [2020-08-21 17:58:22,069 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1059 transitions. Word has length 170 [2020-08-21 17:58:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:22,069 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1059 transitions. [2020-08-21 17:58:22,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:58:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1059 transitions. [2020-08-21 17:58:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-21 17:58:22,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:22,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2020-08-21 17:58:22,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:58:22,074 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-21 17:58:22,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:22,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338385068] [2020-08-21 17:58:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,492 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 17:58:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 17:58:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:58:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:58:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 17:58:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 17:58:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 17:58:22,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338385068] [2020-08-21 17:58:22,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:22,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 17:58:22,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476788015] [2020-08-21 17:58:22,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 17:58:22,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 17:58:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:58:22,818 INFO L87 Difference]: Start difference. First operand 923 states and 1059 transitions. Second operand 19 states. [2020-08-21 17:58:23,548 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:23,885 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:58:24,137 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:24,374 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:25,013 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:26,174 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:26,527 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:27,764 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:28,013 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:28,274 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:28,511 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:28,762 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191