/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:48:18,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:48:18,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:48:18,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:48:18,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:48:18,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:48:18,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:48:18,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:48:18,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:48:18,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:48:18,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:48:18,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:48:18,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:48:18,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:48:18,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:48:18,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:48:18,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:48:18,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:48:18,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:48:18,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:48:18,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:48:18,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:48:18,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:48:18,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:48:18,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:48:18,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:48:18,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:48:18,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:48:18,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:48:18,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:48:18,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:48:18,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:48:18,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:48:18,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:48:18,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:48:18,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:48:18,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:48:18,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:48:18,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:48:18,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:48:18,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:48:18,103 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 22:48:18,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:48:18,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:48:18,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:48:18,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:48:18,127 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:48:18,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:48:18,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:48:18,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:48:18,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:48:18,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:48:18,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:48:18,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:48:18,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:48:18,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:48:18,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:48:18,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:48:18,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:48:18,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:48:18,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:48:18,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:48:18,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:48:18,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:48:18,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:48:18,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:48:18,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:48:18,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:48:18,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:48:18,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:48:18,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:48:18,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:48:18,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:48:18,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:48:18,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:48:18,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:48:18,478 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:48:18,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-21 22:48:18,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d276e527/561439963cc7434084ed32ccede4c56a/FLAG18fd2dd8c [2020-08-21 22:48:19,122 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:48:19,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-21 22:48:19,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d276e527/561439963cc7434084ed32ccede4c56a/FLAG18fd2dd8c [2020-08-21 22:48:19,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d276e527/561439963cc7434084ed32ccede4c56a [2020-08-21 22:48:19,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:48:19,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:48:19,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:48:19,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:48:19,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:48:19,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:48:19" (1/1) ... [2020-08-21 22:48:19,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78532141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:19, skipping insertion in model container [2020-08-21 22:48:19,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:48:19" (1/1) ... [2020-08-21 22:48:19,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:48:19,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:48:19,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:48:19,984 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:48:20,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:48:20,116 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:48:20,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20 WrapperNode [2020-08-21 22:48:20,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:48:20,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:48:20,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:48:20,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:48:20,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (1/1) ... [2020-08-21 22:48:20,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:48:20,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:48:20,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:48:20,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:48:20,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (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 22:48:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:48:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:48:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:48:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:48:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:48:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:48:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:48:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:48:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:48:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:48:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:48:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:48:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-21 22:48:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-21 22:48:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-21 22:48:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-21 22:48:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-21 22:48:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-21 22:48:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:48:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-21 22:48:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-21 22:48:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:48:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:48:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:48:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:48:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:48:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:48:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:48:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:48:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:48:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:48:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:48:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:48:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:48:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:48:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:48:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 22:48:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 22:48:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:48:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:48:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:48:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:48:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:48:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:48:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:48:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 22:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-21 22:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-21 22:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-21 22:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-21 22:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 22:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:48:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:48:21,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:48:21,409 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:48:21,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:48:21 BoogieIcfgContainer [2020-08-21 22:48:21,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:48:21,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:48:21,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:48:21,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:48:21,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:48:19" (1/3) ... [2020-08-21 22:48:21,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4559ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:48:21, skipping insertion in model container [2020-08-21 22:48:21,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:20" (2/3) ... [2020-08-21 22:48:21,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4559ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:48:21, skipping insertion in model container [2020-08-21 22:48:21,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:48:21" (3/3) ... [2020-08-21 22:48:21,422 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-08-21 22:48:21,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:48:21,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:48:21,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:48:21,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:48:21,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:48:21,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:48:21,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:48:21,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:48:21,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:48:21,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:48:21,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:48:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2020-08-21 22:48:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 22:48:21,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:21,522 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:21,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144369, now seen corresponding path program 1 times [2020-08-21 22:48:21,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:21,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951610291] [2020-08-21 22:48:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,390 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 22:48:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 22:48:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:22,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951610291] [2020-08-21 22:48:22,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:22,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:48:22,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561166138] [2020-08-21 22:48:22,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:48:22,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:22,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:48:22,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:48:22,601 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 6 states. [2020-08-21 22:48:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:25,174 INFO L93 Difference]: Finished difference Result 442 states and 585 transitions. [2020-08-21 22:48:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:48:25,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-21 22:48:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:25,193 INFO L225 Difference]: With dead ends: 442 [2020-08-21 22:48:25,193 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 22:48:25,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:48:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 22:48:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2020-08-21 22:48:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-21 22:48:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2020-08-21 22:48:25,322 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 83 [2020-08-21 22:48:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:25,325 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2020-08-21 22:48:25,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:48:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2020-08-21 22:48:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 22:48:25,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:25,341 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:25,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:48:25,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:25,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:25,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1458323181, now seen corresponding path program 1 times [2020-08-21 22:48:25,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:25,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165827290] [2020-08-21 22:48:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,769 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 22:48:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 22:48:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:25,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165827290] [2020-08-21 22:48:25,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:25,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:48:25,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455684974] [2020-08-21 22:48:25,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:48:25,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:25,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:48:25,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:48:25,919 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand 7 states. [2020-08-21 22:48:26,796 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 22:48:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:28,639 INFO L93 Difference]: Finished difference Result 375 states and 480 transitions. [2020-08-21 22:48:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:48:28,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-21 22:48:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:28,651 INFO L225 Difference]: With dead ends: 375 [2020-08-21 22:48:28,651 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 22:48:28,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:48:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 22:48:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 195. [2020-08-21 22:48:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-21 22:48:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2020-08-21 22:48:28,715 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 84 [2020-08-21 22:48:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:28,716 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2020-08-21 22:48:28,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:48:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2020-08-21 22:48:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 22:48:28,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:28,719 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:28,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:48:28,719 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:28,720 INFO L82 PathProgramCache]: Analyzing trace with hash 481269972, now seen corresponding path program 1 times [2020-08-21 22:48:28,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:28,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796142794] [2020-08-21 22:48:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,126 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:29,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 22:48:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:48:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:29,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796142794] [2020-08-21 22:48:29,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:29,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 22:48:29,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259962408] [2020-08-21 22:48:29,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:48:29,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:48:29,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:48:29,355 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand 13 states. [2020-08-21 22:48:30,061 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:48:30,737 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-08-21 22:48:31,508 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-08-21 22:48:32,702 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:48:33,101 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-21 22:48:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:37,133 INFO L93 Difference]: Finished difference Result 633 states and 818 transitions. [2020-08-21 22:48:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 22:48:37,133 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-08-21 22:48:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:37,143 INFO L225 Difference]: With dead ends: 633 [2020-08-21 22:48:37,143 INFO L226 Difference]: Without dead ends: 483 [2020-08-21 22:48:37,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-08-21 22:48:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-21 22:48:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 386. [2020-08-21 22:48:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-21 22:48:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 486 transitions. [2020-08-21 22:48:37,270 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 486 transitions. Word has length 89 [2020-08-21 22:48:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:37,271 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 486 transitions. [2020-08-21 22:48:37,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:48:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 486 transitions. [2020-08-21 22:48:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 22:48:37,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:37,274 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:37,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:48:37,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:37,275 INFO L82 PathProgramCache]: Analyzing trace with hash -678987685, now seen corresponding path program 1 times [2020-08-21 22:48:37,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:37,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679716764] [2020-08-21 22:48:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,625 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:48:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:48:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:48:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:37,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679716764] [2020-08-21 22:48:37,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:37,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:48:37,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722500725] [2020-08-21 22:48:37,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:48:37,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:37,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:48:37,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:48:37,834 INFO L87 Difference]: Start difference. First operand 386 states and 486 transitions. Second operand 11 states. [2020-08-21 22:48:38,472 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:48:40,331 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:48:40,902 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:48:41,185 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:48:41,550 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:48:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:44,577 INFO L93 Difference]: Finished difference Result 1239 states and 1662 transitions. [2020-08-21 22:48:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 22:48:44,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-08-21 22:48:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:44,587 INFO L225 Difference]: With dead ends: 1239 [2020-08-21 22:48:44,587 INFO L226 Difference]: Without dead ends: 898 [2020-08-21 22:48:44,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-08-21 22:48:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-08-21 22:48:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 703. [2020-08-21 22:48:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 22:48:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 890 transitions. [2020-08-21 22:48:44,798 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 890 transitions. Word has length 95 [2020-08-21 22:48:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:44,799 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 890 transitions. [2020-08-21 22:48:44,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:48:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 890 transitions. [2020-08-21 22:48:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 22:48:44,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:44,803 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:44,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:48:44,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:44,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:44,804 INFO L82 PathProgramCache]: Analyzing trace with hash -319049537, now seen corresponding path program 1 times [2020-08-21 22:48:44,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:44,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393657661] [2020-08-21 22:48:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,134 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:48:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 22:48:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:48:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 22:48:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:45,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393657661] [2020-08-21 22:48:45,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:45,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:48:45,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140254100] [2020-08-21 22:48:45,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:48:45,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:45,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:48:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:48:45,319 INFO L87 Difference]: Start difference. First operand 703 states and 890 transitions. Second operand 12 states. [2020-08-21 22:48:46,057 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:48:47,863 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:48:48,171 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:48:48,519 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:48:49,681 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:48:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:52,422 INFO L93 Difference]: Finished difference Result 1988 states and 2808 transitions. [2020-08-21 22:48:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 22:48:52,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-21 22:48:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:52,433 INFO L225 Difference]: With dead ends: 1988 [2020-08-21 22:48:52,433 INFO L226 Difference]: Without dead ends: 1330 [2020-08-21 22:48:52,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 22:48:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-08-21 22:48:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1102. [2020-08-21 22:48:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 22:48:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1421 transitions. [2020-08-21 22:48:52,679 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1421 transitions. Word has length 99 [2020-08-21 22:48:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:52,679 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1421 transitions. [2020-08-21 22:48:52,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:48:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1421 transitions. [2020-08-21 22:48:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 22:48:52,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:52,684 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:52,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:48:52,684 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:52,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:52,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1144263416, now seen corresponding path program 1 times [2020-08-21 22:48:52,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:52,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383581849] [2020-08-21 22:48:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,038 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:48:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:48:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 22:48:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 22:48:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:53,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383581849] [2020-08-21 22:48:53,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:53,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:48:53,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509565535] [2020-08-21 22:48:53,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:48:53,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:53,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:48:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:48:53,297 INFO L87 Difference]: Start difference. First operand 1102 states and 1421 transitions. Second operand 12 states. [2020-08-21 22:48:55,618 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 22:48:55,939 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-21 22:48:56,265 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 22:48:56,631 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 22:48:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:58,763 INFO L93 Difference]: Finished difference Result 2481 states and 3557 transitions. [2020-08-21 22:48:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 22:48:58,764 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-21 22:48:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:58,774 INFO L225 Difference]: With dead ends: 2481 [2020-08-21 22:48:58,774 INFO L226 Difference]: Without dead ends: 1424 [2020-08-21 22:48:58,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-21 22:48:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-08-21 22:48:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2020-08-21 22:48:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-08-21 22:48:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1449 transitions. [2020-08-21 22:48:59,168 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1449 transitions. Word has length 132 [2020-08-21 22:48:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:59,169 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1449 transitions. [2020-08-21 22:48:59,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:48:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1449 transitions. [2020-08-21 22:48:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 22:48:59,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:59,174 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:59,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:48:59,176 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:59,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1305336714, now seen corresponding path program 1 times [2020-08-21 22:48:59,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:59,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394693058] [2020-08-21 22:48:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,542 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:48:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:48:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:48:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:48:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:48:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:48:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:48:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 22:48:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 22:48:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:48:59,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394693058] [2020-08-21 22:48:59,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:59,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 22:48:59,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28689555] [2020-08-21 22:48:59,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:48:59,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:48:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:48:59,891 INFO L87 Difference]: Start difference. First operand 1128 states and 1449 transitions. Second operand 15 states. [2020-08-21 22:49:01,504 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:49:02,077 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:49:03,461 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:49:03,814 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:49:04,152 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 22:49:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:06,320 INFO L93 Difference]: Finished difference Result 2527 states and 3605 transitions. [2020-08-21 22:49:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 22:49:06,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-08-21 22:49:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:06,331 INFO L225 Difference]: With dead ends: 2527 [2020-08-21 22:49:06,331 INFO L226 Difference]: Without dead ends: 1444 [2020-08-21 22:49:06,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:49:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-08-21 22:49:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1144. [2020-08-21 22:49:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-08-21 22:49:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1465 transitions. [2020-08-21 22:49:06,645 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1465 transitions. Word has length 132 [2020-08-21 22:49:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:06,646 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1465 transitions. [2020-08-21 22:49:06,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 22:49:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1465 transitions. [2020-08-21 22:49:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 22:49:06,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:06,650 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:06,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:49:06,650 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:06,651 INFO L82 PathProgramCache]: Analyzing trace with hash 856640075, now seen corresponding path program 1 times [2020-08-21 22:49:06,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:06,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565063985] [2020-08-21 22:49:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,023 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:49:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:49:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:49:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:49:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:49:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:49:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:49:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:49:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:49:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:49:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:49:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:49:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:49:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 22:49:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 22:49:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:49:07,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565063985] [2020-08-21 22:49:07,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:07,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:49:07,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449118237] [2020-08-21 22:49:07,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:49:07,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:07,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:49:07,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:49:07,317 INFO L87 Difference]: Start difference. First operand 1144 states and 1465 transitions. Second operand 10 states. [2020-08-21 22:49:07,903 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:49:08,881 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:49:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:13,767 INFO L93 Difference]: Finished difference Result 3668 states and 5255 transitions. [2020-08-21 22:49:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 22:49:13,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 22:49:13,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:13,786 INFO L225 Difference]: With dead ends: 3668 [2020-08-21 22:49:13,786 INFO L226 Difference]: Without dead ends: 2569 [2020-08-21 22:49:13,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:49:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-08-21 22:49:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2160. [2020-08-21 22:49:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-08-21 22:49:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2823 transitions. [2020-08-21 22:49:14,444 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2823 transitions. Word has length 132 [2020-08-21 22:49:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:14,445 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2823 transitions. [2020-08-21 22:49:14,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:49:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2823 transitions. [2020-08-21 22:49:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 22:49:14,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:14,450 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:14,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:49:14,450 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2033559269, now seen corresponding path program 1 times [2020-08-21 22:49:14,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:14,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340895670] [2020-08-21 22:49:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,877 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:49:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:49:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:49:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:49:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 22:49:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 22:49:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:49:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:49:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:49:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:49:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:49:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:49:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:49:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:49:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:49:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 22:49:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 22:49:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 22:49:15,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340895670] [2020-08-21 22:49:15,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:15,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:49:15,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390383666] [2020-08-21 22:49:15,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:49:15,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:15,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:49:15,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:49:15,133 INFO L87 Difference]: Start difference. First operand 2160 states and 2823 transitions. Second operand 10 states. [2020-08-21 22:49:15,877 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 213