/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:01:41,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:01:41,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:01:41,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:01:41,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:01:41,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:01:41,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:01:41,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:01:41,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:01:41,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:01:41,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:01:41,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:01:41,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:01:41,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:01:41,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:01:41,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:01:41,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:01:41,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:01:41,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:01:41,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:01:41,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:01:41,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:01:41,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:01:41,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:01:41,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:01:41,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:01:41,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:01:41,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:01:41,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:01:41,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:01:41,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:01:41,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:01:42,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:01:42,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:01:42,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:01:42,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:01:42,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:01:42,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:01:42,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:01:42,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:01:42,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:01:42,007 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 14:01:42,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:01:42,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:01:42,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:01:42,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:01:42,055 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:01:42,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:01:42,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:01:42,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:01:42,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:01:42,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:01:42,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:01:42,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:01:42,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:01:42,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:01:42,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:01:42,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:01:42,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:01:42,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:01:42,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:01:42,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:01:42,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:01:42,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:01:42,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:01:42,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:01:42,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:01:42,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:01:42,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:01:42,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:01:42,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:01:42,063 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 -> log-additional-information=true; [2020-08-21 14:01:42,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:01:42,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:01:42,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:01:42,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:01:42,380 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:01:42,380 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-21 14:01:42,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da05feef5/e6b649be2fcb4544b48fa1b6e316633a/FLAG8a77b260c [2020-08-21 14:01:42,937 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:01:42,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-21 14:01:42,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da05feef5/e6b649be2fcb4544b48fa1b6e316633a/FLAG8a77b260c [2020-08-21 14:01:43,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da05feef5/e6b649be2fcb4544b48fa1b6e316633a [2020-08-21 14:01:43,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:01:43,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:01:43,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:01:43,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:01:43,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:01:43,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43, skipping insertion in model container [2020-08-21 14:01:43,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:01:43,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:01:43,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:01:43,761 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:01:43,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:01:43,891 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:01:43,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43 WrapperNode [2020-08-21 14:01:43,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:01:43,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:01:43,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:01:43,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:01:43,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:43,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (1/1) ... [2020-08-21 14:01:44,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:01:44,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:01:44,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:01:44,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:01:44,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (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 14:01:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:01:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:01:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:01:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:01:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:01:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:01:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:01:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:01:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:01:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:01:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:01:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:01:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:01:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:01:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:01:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:01:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:01:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:01:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:01:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:01:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:01:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:01:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:01:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:01:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:01:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:01:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:01:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:01:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:01:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:01:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:01:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:01:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:01:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:01:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:01:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:01:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:01:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:01:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:01:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:01:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:01:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:01:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:01:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:01:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:01:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:01:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:01:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:01:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:01:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:01:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:01:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:01:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:01:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:01:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:01:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:01:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:01:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:01:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:01:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:01:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:01:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:01:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:01:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:01:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:01:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:01:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:01:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:01:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:01:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:01:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:01:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:01:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:01:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:01:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:01:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:01:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:01:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:01:45,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:01:45,220 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:01:45,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:01:45 BoogieIcfgContainer [2020-08-21 14:01:45,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:01:45,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:01:45,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:01:45,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:01:45,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:01:43" (1/3) ... [2020-08-21 14:01:45,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5459b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:01:45, skipping insertion in model container [2020-08-21 14:01:45,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:01:43" (2/3) ... [2020-08-21 14:01:45,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5459b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:01:45, skipping insertion in model container [2020-08-21 14:01:45,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:01:45" (3/3) ... [2020-08-21 14:01:45,240 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2020-08-21 14:01:45,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:01:45,262 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:01:45,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:01:45,298 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:01:45,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:01:45,298 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:01:45,299 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:01:45,299 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:01:45,299 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:01:45,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:01:45,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:01:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-21 14:01:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 14:01:45,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:01:45,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:01:45,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:01:45,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:01:45,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451371, now seen corresponding path program 1 times [2020-08-21 14:01:45,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:01:45,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367049736] [2020-08-21 14:01:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:01:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,067 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:01:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:01:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:01:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:01:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:01:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:01:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:01:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:01:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:01:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:01:46,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367049736] [2020-08-21 14:01:46,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:01:46,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:01:46,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250535674] [2020-08-21 14:01:46,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:01:46,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:01:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:01:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:01:46,209 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-21 14:01:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:01:47,213 INFO L93 Difference]: Finished difference Result 286 states and 369 transitions. [2020-08-21 14:01:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:01:47,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 14:01:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:01:47,235 INFO L225 Difference]: With dead ends: 286 [2020-08-21 14:01:47,235 INFO L226 Difference]: Without dead ends: 159 [2020-08-21 14:01:47,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 14:01:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-21 14:01:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-21 14:01:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 14:01:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2020-08-21 14:01:47,323 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 59 [2020-08-21 14:01:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:01:47,324 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2020-08-21 14:01:47,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:01:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2020-08-21 14:01:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 14:01:47,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:01:47,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:01:47,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:01:47,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:01:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:01:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1343962066, now seen corresponding path program 1 times [2020-08-21 14:01:47,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:01:47,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618144330] [2020-08-21 14:01:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:01:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,702 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:01:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:01:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:01:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:01:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:01:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:01:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:01:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:01:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:01:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:01:47,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618144330] [2020-08-21 14:01:47,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:01:47,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:01:47,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518243648] [2020-08-21 14:01:47,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:01:47,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:01:47,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:01:47,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:01:47,779 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 5 states. [2020-08-21 14:01:48,243 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:01:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:01:49,072 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2020-08-21 14:01:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:01:49,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 14:01:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:01:49,076 INFO L225 Difference]: With dead ends: 218 [2020-08-21 14:01:49,077 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 14:01:49,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:01:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 14:01:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-21 14:01:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 14:01:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-21 14:01:49,116 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2020-08-21 14:01:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:01:49,117 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-21 14:01:49,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:01:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-21 14:01:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 14:01:49,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:01:49,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:01:49,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:01:49,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:01:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:01:49,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1988567769, now seen corresponding path program 1 times [2020-08-21 14:01:49,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:01:49,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623387677] [2020-08-21 14:01:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:01:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,502 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:01:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:01:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:01:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:01:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:01:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:01:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:01:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:01:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:01:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:01:49,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623387677] [2020-08-21 14:01:49,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:01:49,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:01:49,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956636469] [2020-08-21 14:01:49,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:01:49,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:01:49,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:01:49,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:01:49,671 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 9 states. [2020-08-21 14:01:50,092 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:01:50,423 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:01:50,674 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:01:50,918 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:01:51,845 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:01:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:01:53,029 INFO L93 Difference]: Finished difference Result 402 states and 496 transitions. [2020-08-21 14:01:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:01:53,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 14:01:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:01:53,035 INFO L225 Difference]: With dead ends: 402 [2020-08-21 14:01:53,036 INFO L226 Difference]: Without dead ends: 311 [2020-08-21 14:01:53,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 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 14:01:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-21 14:01:53,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 242. [2020-08-21 14:01:53,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 14:01:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2020-08-21 14:01:53,105 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 65 [2020-08-21 14:01:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:01:53,106 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2020-08-21 14:01:53,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:01:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2020-08-21 14:01:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 14:01:53,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:01:53,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:01:53,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:01:53,109 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:01:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:01:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 827482166, now seen corresponding path program 1 times [2020-08-21 14:01:53,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:01:53,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975614501] [2020-08-21 14:01:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:01:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,433 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:01:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:01:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:01:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:01:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:01:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:01:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:01:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:01:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:01:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:01:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 14:01:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975614501] [2020-08-21 14:01:53,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:01:53,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:01:53,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330549656] [2020-08-21 14:01:53,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:01:53,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:01:53,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:01:53,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:01:53,546 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 9 states. [2020-08-21 14:01:53,918 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:01:54,611 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:01:55,404 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:01:55,701 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:01:55,978 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:01:56,236 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:01:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:01:56,815 INFO L93 Difference]: Finished difference Result 631 states and 816 transitions. [2020-08-21 14:01:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:01:56,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 14:01:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:01:56,822 INFO L225 Difference]: With dead ends: 631 [2020-08-21 14:01:56,822 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 14:01:56,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:01:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 14:01:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2020-08-21 14:01:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-21 14:01:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2020-08-21 14:01:56,906 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 70 [2020-08-21 14:01:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:01:56,907 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2020-08-21 14:01:56,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:01:56,907 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2020-08-21 14:01:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 14:01:56,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:01:56,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:01:56,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:01:56,910 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:01:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:01:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash 361073596, now seen corresponding path program 1 times [2020-08-21 14:01:56,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:01:56,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272720688] [2020-08-21 14:01:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:01:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,159 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:01:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:01:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:01:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:01:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:01:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:01:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:01:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:01:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:01:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:01:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:01:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:01:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 14:01:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 14:01:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:01:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:01:57,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272720688] [2020-08-21 14:01:57,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:01:57,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:01:57,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702841135] [2020-08-21 14:01:57,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:01:57,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:01:57,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:01:57,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:01:57,334 INFO L87 Difference]: Start difference. First operand 353 states and 423 transitions. Second operand 9 states. [2020-08-21 14:01:57,649 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:01:58,718 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:01:58,977 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:01:59,244 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:01:59,529 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:00,507 INFO L93 Difference]: Finished difference Result 1112 states and 1489 transitions. [2020-08-21 14:02:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:02:00,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 14:02:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:00,514 INFO L225 Difference]: With dead ends: 1112 [2020-08-21 14:02:00,515 INFO L226 Difference]: Without dead ends: 787 [2020-08-21 14:02:00,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:02:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-21 14:02:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 665. [2020-08-21 14:02:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-08-21 14:02:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 802 transitions. [2020-08-21 14:02:00,647 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 802 transitions. Word has length 88 [2020-08-21 14:02:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:00,648 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 802 transitions. [2020-08-21 14:02:00,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:02:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 802 transitions. [2020-08-21 14:02:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 14:02:00,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:00,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:02:00,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:02:00,651 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1750216773, now seen corresponding path program 1 times [2020-08-21 14:02:00,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:00,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150954031] [2020-08-21 14:02:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,962 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:02:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:00,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:02:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 14:02:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 14:02:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:01,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150954031] [2020-08-21 14:02:01,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:01,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:02:01,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979192181] [2020-08-21 14:02:01,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:02:01,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:02:01,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:02:01,105 INFO L87 Difference]: Start difference. First operand 665 states and 802 transitions. Second operand 9 states. [2020-08-21 14:02:02,078 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:02,332 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:02:02,641 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:02,889 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:03,450 INFO L93 Difference]: Finished difference Result 1429 states and 1823 transitions. [2020-08-21 14:02:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:02:03,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 14:02:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:03,458 INFO L225 Difference]: With dead ends: 1429 [2020-08-21 14:02:03,459 INFO L226 Difference]: Without dead ends: 792 [2020-08-21 14:02:03,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:02:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-08-21 14:02:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 685. [2020-08-21 14:02:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-21 14:02:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 822 transitions. [2020-08-21 14:02:03,627 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 822 transitions. Word has length 88 [2020-08-21 14:02:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:03,630 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 822 transitions. [2020-08-21 14:02:03,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:02:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 822 transitions. [2020-08-21 14:02:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 14:02:03,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:03,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:02:03,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:02:03,636 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash -364013379, now seen corresponding path program 1 times [2020-08-21 14:02:03,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:03,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623729799] [2020-08-21 14:02:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,915 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:02:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:02:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 14:02:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 14:02:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:04,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623729799] [2020-08-21 14:02:04,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:04,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:02:04,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822540988] [2020-08-21 14:02:04,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:02:04,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:04,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:02:04,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:02:04,054 INFO L87 Difference]: Start difference. First operand 685 states and 822 transitions. Second operand 11 states. [2020-08-21 14:02:04,545 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:04,782 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:05,004 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:05,737 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:06,010 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:06,279 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:06,888 INFO L93 Difference]: Finished difference Result 1290 states and 1630 transitions. [2020-08-21 14:02:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:02:06,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-21 14:02:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:06,895 INFO L225 Difference]: With dead ends: 1290 [2020-08-21 14:02:06,895 INFO L226 Difference]: Without dead ends: 633 [2020-08-21 14:02:06,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:02:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-08-21 14:02:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 556. [2020-08-21 14:02:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 14:02:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2020-08-21 14:02:07,052 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 88 [2020-08-21 14:02:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:07,053 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2020-08-21 14:02:07,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:02:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2020-08-21 14:02:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 14:02:07,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:07,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:02:07,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:02:07,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1797836392, now seen corresponding path program 1 times [2020-08-21 14:02:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:07,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833533505] [2020-08-21 14:02:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,468 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:02:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 14:02:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 14:02:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 14:02:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:07,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833533505] [2020-08-21 14:02:07,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:07,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:02:07,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082636150] [2020-08-21 14:02:07,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:02:07,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:07,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:02:07,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:02:07,644 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand 12 states. [2020-08-21 14:02:08,082 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:08,733 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:09,497 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:09,841 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:10,085 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:10,362 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:10,639 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:12,000 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:12,278 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:12,856 INFO L93 Difference]: Finished difference Result 1629 states and 2065 transitions. [2020-08-21 14:02:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:02:12,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-21 14:02:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:12,866 INFO L225 Difference]: With dead ends: 1629 [2020-08-21 14:02:12,866 INFO L226 Difference]: Without dead ends: 1277 [2020-08-21 14:02:12,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 14:02:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-08-21 14:02:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1157. [2020-08-21 14:02:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-08-21 14:02:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1355 transitions. [2020-08-21 14:02:13,062 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1355 transitions. Word has length 92 [2020-08-21 14:02:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:13,066 INFO L479 AbstractCegarLoop]: Abstraction has 1157 states and 1355 transitions. [2020-08-21 14:02:13,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:02:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1355 transitions. [2020-08-21 14:02:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 14:02:13,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:13,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:13,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:02:13,071 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:13,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:13,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1966372220, now seen corresponding path program 1 times [2020-08-21 14:02:13,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:13,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675465662] [2020-08-21 14:02:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,371 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:02:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:02:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:02:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 14:02:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 14:02:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 14:02:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 14:02:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 14:02:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 14:02:13,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675465662] [2020-08-21 14:02:13,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:02:13,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:02:13,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885138651] [2020-08-21 14:02:13,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:02:13,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:02:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:02:13,678 INFO L87 Difference]: Start difference. First operand 1157 states and 1355 transitions. Second operand 16 states. [2020-08-21 14:02:14,199 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:02:14,644 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 14:02:15,012 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:02:15,372 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:02:16,222 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 14:02:16,625 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 14:02:16,951 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:02:17,333 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 14:02:17,681 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 14:02:18,715 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:19,782 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 14:02:20,312 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 14:02:20,626 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:21,316 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 14:02:22,217 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 14:02:22,443 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:22,742 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 14:02:23,008 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:02:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:23,708 INFO L93 Difference]: Finished difference Result 2376 states and 2878 transitions. [2020-08-21 14:02:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-21 14:02:23,709 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-08-21 14:02:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:23,718 INFO L225 Difference]: With dead ends: 2376 [2020-08-21 14:02:23,718 INFO L226 Difference]: Without dead ends: 1417 [2020-08-21 14:02:23,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=630, Invalid=2562, Unknown=0, NotChecked=0, Total=3192 [2020-08-21 14:02:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-08-21 14:02:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1269. [2020-08-21 14:02:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-21 14:02:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1463 transitions. [2020-08-21 14:02:23,940 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1463 transitions. Word has length 136 [2020-08-21 14:02:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:23,941 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1463 transitions. [2020-08-21 14:02:23,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:02:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1463 transitions. [2020-08-21 14:02:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-21 14:02:23,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:23,952 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:23,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:02:23,953 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:23,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1880321482, now seen corresponding path program 1 times [2020-08-21 14:02:23,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:23,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070156671] [2020-08-21 14:02:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,254 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:24,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:02:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:02:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:02:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 14:02:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:02:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 14:02:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:02:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:02:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-21 14:02:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 14:02:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:02:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 14:02:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-08-21 14:02:24,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070156671] [2020-08-21 14:02:24,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:02:24,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:02:24,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785716059] [2020-08-21 14:02:24,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:02:24,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:24,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:02:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:02:24,785 INFO L87 Difference]: Start difference. First operand 1269 states and 1463 transitions. Second operand 16 states. [2020-08-21 14:02:26,137 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:26,360 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:26,655 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:26,934 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:27,201 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:27,919 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:28,451 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:02:28,917 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:02:29,513 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:31,541 INFO L93 Difference]: Finished difference Result 3631 states and 4392 transitions. [2020-08-21 14:02:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 14:02:31,542 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 244 [2020-08-21 14:02:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:31,556 INFO L225 Difference]: With dead ends: 3631 [2020-08-21 14:02:31,556 INFO L226 Difference]: Without dead ends: 2241 [2020-08-21 14:02:31,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-21 14:02:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-08-21 14:02:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1858. [2020-08-21 14:02:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-08-21 14:02:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2154 transitions. [2020-08-21 14:02:32,039 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2154 transitions. Word has length 244 [2020-08-21 14:02:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:32,040 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2154 transitions. [2020-08-21 14:02:32,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:02:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2154 transitions. [2020-08-21 14:02:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-08-21 14:02:32,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:32,048 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:32,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:02:32,049 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1137238651, now seen corresponding path program 1 times [2020-08-21 14:02:32,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:32,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414934422] [2020-08-21 14:02:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,337 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:02:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:02:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:02:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 14:02:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:02:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:02:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 14:02:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:02:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-21 14:02:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-21 14:02:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-21 14:02:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 14:02:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 14:02:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 90 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-21 14:02:32,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414934422] [2020-08-21 14:02:32,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:02:32,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 14:02:32,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335594866] [2020-08-21 14:02:32,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 14:02:32,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:32,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 14:02:32,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:02:32,692 INFO L87 Difference]: Start difference. First operand 1858 states and 2154 transitions. Second operand 17 states. [2020-08-21 14:02:33,470 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:33,778 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:02:34,028 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:34,263 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:02:35,026 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:35,921 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:36,263 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:36,509 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:37,323 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:38,050 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:38,309 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:39,153 INFO L93 Difference]: Finished difference Result 3499 states and 4139 transitions. [2020-08-21 14:02:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:02:39,154 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 250 [2020-08-21 14:02:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:39,165 INFO L225 Difference]: With dead ends: 3499 [2020-08-21 14:02:39,165 INFO L226 Difference]: Without dead ends: 1909 [2020-08-21 14:02:39,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 14:02:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-08-21 14:02:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1807. [2020-08-21 14:02:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-08-21 14:02:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2067 transitions. [2020-08-21 14:02:39,486 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2067 transitions. Word has length 250 [2020-08-21 14:02:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:39,486 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2067 transitions. [2020-08-21 14:02:39,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 14:02:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2067 transitions. [2020-08-21 14:02:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-21 14:02:39,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:39,498 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:39,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:02:39,498 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:39,498 INFO L82 PathProgramCache]: Analyzing trace with hash 507686355, now seen corresponding path program 1 times [2020-08-21 14:02:39,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:39,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663220912] [2020-08-21 14:02:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,895 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:02:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:02:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:02:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 14:02:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:02:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:02:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 14:02:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:02:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:02:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:02:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 14:02:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-21 14:02:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-21 14:02:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 97 proven. 27 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-21 14:02:40,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663220912] [2020-08-21 14:02:40,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:02:40,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 14:02:40,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506884421] [2020-08-21 14:02:40,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 14:02:40,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:40,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 14:02:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:02:40,370 INFO L87 Difference]: Start difference. First operand 1807 states and 2067 transitions. Second operand 17 states.