/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=SHALLOWEST --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_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:38:21,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:38:21,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:38:21,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:38:21,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:38:21,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:38:21,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:38:21,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:38:21,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:38:21,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:38:21,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:38:21,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:38:21,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:38:21,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:38:21,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:38:21,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:38:21,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:38:21,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:38:21,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:38:21,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:38:21,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:38:21,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:38:21,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:38:21,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:38:21,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:38:21,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:38:21,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:38:21,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:38:21,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:38:21,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:38:21,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:38:21,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:38:21,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:38:21,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:38:21,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:38:21,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:38:21,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:38:21,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:38:21,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:38:21,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:38:21,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:38:21,349 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 19:38:21,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:38:21,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:38:21,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:38:21,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:38:21,398 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:38:21,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:38:21,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:38:21,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:38:21,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:38:21,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:38:21,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:38:21,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:38:21,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:38:21,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:38:21,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:38:21,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:38:21,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:38:21,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:38:21,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:38:21,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:38:21,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:38:21,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:38:21,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:38:21,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:38:21,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:38:21,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:38:21,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:38:21,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:38:21,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:38:21,405 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=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:38:21,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:38:21,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:38:21,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:38:21,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:38:21,751 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:38:21,752 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 19:38:21,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9e2f1c5f/cada1976df704311a83f8882813343e0/FLAG139f93cad [2020-08-21 19:38:22,356 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:38:22,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 19:38:22,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9e2f1c5f/cada1976df704311a83f8882813343e0/FLAG139f93cad [2020-08-21 19:38:22,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9e2f1c5f/cada1976df704311a83f8882813343e0 [2020-08-21 19:38:22,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:38:22,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:38:22,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:38:22,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:38:22,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:38:22,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:38:22" (1/1) ... [2020-08-21 19:38:22,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1806b88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:22, skipping insertion in model container [2020-08-21 19:38:22,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:38:22" (1/1) ... [2020-08-21 19:38:22,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:38:22,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:38:23,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:38:23,194 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:38:23,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:38:23,368 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:38:23,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23 WrapperNode [2020-08-21 19:38:23,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:38:23,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:38:23,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:38:23,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:38:23,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (1/1) ... [2020-08-21 19:38:23,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:38:23,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:38:23,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:38:23,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:38:23,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (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 19:38:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:38:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:38:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:38:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:38:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:38:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:38:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:38:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:38:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 19:38:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:38:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 19:38:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:38:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:38:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:38:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:38:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:38:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:38:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 19:38:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 19:38:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 19:38:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:38:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:38:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:38:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:38:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:38:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:38:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:38:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:38:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:38:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:38:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:38:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:38:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:38:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:38:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:38:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:38:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:38:23,537 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:38:23,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:38:23,538 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:38:23,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:38:23,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:38:23,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 19:38:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:38:23,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:38:23,540 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:38:23,540 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:38:23,540 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:38:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:38:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 19:38:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:38:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:38:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:38:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:38:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:38:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:38:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:38:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 19:38:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:38:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:38:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:38:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:38:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 19:38:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:38:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 19:38:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:38:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:38:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:38:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:38:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:38:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:38:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:38:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:38:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:38:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:38:24,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:38:24,634 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:38:24,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:38:24 BoogieIcfgContainer [2020-08-21 19:38:24,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:38:24,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:38:24,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:38:24,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:38:24,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:38:22" (1/3) ... [2020-08-21 19:38:24,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34387cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:38:24, skipping insertion in model container [2020-08-21 19:38:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:23" (2/3) ... [2020-08-21 19:38:24,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34387cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:38:24, skipping insertion in model container [2020-08-21 19:38:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:38:24" (3/3) ... [2020-08-21 19:38:24,648 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-21 19:38:24,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:38:24,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:38:24,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:38:24,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:38:24,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:38:24,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:38:24,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:38:24,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:38:24,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:38:24,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:38:24,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:38:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-21 19:38:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 19:38:24,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:24,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:24,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-21 19:38:24,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:24,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448819786] [2020-08-21 19:38:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,378 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:38:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:38:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:25,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448819786] [2020-08-21 19:38:25,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:25,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:38:25,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335576819] [2020-08-21 19:38:25,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:38:25,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:25,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:38:25,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:38:25,533 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-21 19:38:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:26,878 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-21 19:38:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:38:26,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 19:38:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:26,896 INFO L225 Difference]: With dead ends: 360 [2020-08-21 19:38:26,896 INFO L226 Difference]: Without dead ends: 194 [2020-08-21 19:38:26,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:38:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-21 19:38:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-21 19:38:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 19:38:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-21 19:38:27,001 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-21 19:38:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:27,002 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-21 19:38:27,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:38:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-21 19:38:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 19:38:27,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:27,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:27,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:38:27,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:27,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-21 19:38:27,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:27,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090887195] [2020-08-21 19:38:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,299 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:38:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:38:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090887195] [2020-08-21 19:38:27,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:27,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:38:27,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214969186] [2020-08-21 19:38:27,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:38:27,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:38:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:38:27,347 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-21 19:38:27,798 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:28,810 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-21 19:38:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:38:28,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 19:38:28,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:28,816 INFO L225 Difference]: With dead ends: 289 [2020-08-21 19:38:28,816 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 19:38:28,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:38:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 19:38:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 19:38:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 19:38:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-21 19:38:28,862 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-21 19:38:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:28,863 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-21 19:38:28,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:38:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-21 19:38:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:38:28,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:28,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:28,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:38:28,866 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-21 19:38:28,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:28,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455522000] [2020-08-21 19:38:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,213 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:38:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:38:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:29,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455522000] [2020-08-21 19:38:29,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:29,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:38:29,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521936095] [2020-08-21 19:38:29,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:38:29,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:29,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:38:29,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:38:29,288 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-21 19:38:29,711 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:30,032 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:30,304 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:30,525 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:32,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:32,011 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-21 19:38:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:38:32,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 19:38:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:32,016 INFO L225 Difference]: With dead ends: 302 [2020-08-21 19:38:32,016 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 19:38:32,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 19:38:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 19:38:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 19:38:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-21 19:38:32,084 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-21 19:38:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:32,085 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-21 19:38:32,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:38:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-21 19:38:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 19:38:32,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:32,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:32,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:38:32,095 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-21 19:38:32,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:32,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81447359] [2020-08-21 19:38:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,446 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:38:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 19:38:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 19:38:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:32,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81447359] [2020-08-21 19:38:32,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:32,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:38:32,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847094774] [2020-08-21 19:38:32,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:38:32,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:32,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:38:32,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:38:32,563 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-21 19:38:32,874 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:34,206 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:34,956 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-21 19:38:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:38:34,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-21 19:38:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:34,961 INFO L225 Difference]: With dead ends: 413 [2020-08-21 19:38:34,961 INFO L226 Difference]: Without dead ends: 289 [2020-08-21 19:38:34,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:38:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-21 19:38:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-21 19:38:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 19:38:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-21 19:38:35,015 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-21 19:38:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:35,016 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-21 19:38:35,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:38:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-21 19:38:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 19:38:35,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:35,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:35,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:38:35,018 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:35,018 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-21 19:38:35,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:35,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820585014] [2020-08-21 19:38:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,325 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:38:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 19:38:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:38:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:35,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820585014] [2020-08-21 19:38:35,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:35,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:38:35,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482993750] [2020-08-21 19:38:35,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:38:35,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:35,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:38:35,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:35,499 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-21 19:38:35,998 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:36,352 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:36,630 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:36,859 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:37,389 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:38,480 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:38,820 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:39,088 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:39,400 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:39,725 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:39,983 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:41,384 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:41,751 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:42,757 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-21 19:38:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 19:38:42,757 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 19:38:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:42,764 INFO L225 Difference]: With dead ends: 866 [2020-08-21 19:38:42,764 INFO L226 Difference]: Without dead ends: 644 [2020-08-21 19:38:42,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 19:38:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-21 19:38:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-21 19:38:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-21 19:38:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-21 19:38:42,919 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-21 19:38:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:42,920 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-21 19:38:42,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:38:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-21 19:38:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 19:38:42,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:42,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:42,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:38:42,925 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-21 19:38:42,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:42,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078053343] [2020-08-21 19:38:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,210 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:38:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 19:38:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 19:38:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 19:38:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:38:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 19:38:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 19:38:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 19:38:43,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078053343] [2020-08-21 19:38:43,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:43,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:38:43,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750180261] [2020-08-21 19:38:43,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:38:43,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:43,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:38:43,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:38:43,481 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-21 19:38:43,975 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:44,594 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:45,149 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:45,410 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:38:45,684 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:45,940 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:46,207 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:46,492 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:38:46,767 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:47,039 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:49,030 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:49,269 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:38:49,501 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:49,762 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:50,396 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-21 19:38:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 19:38:50,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-21 19:38:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:50,403 INFO L225 Difference]: With dead ends: 1164 [2020-08-21 19:38:50,404 INFO L226 Difference]: Without dead ends: 606 [2020-08-21 19:38:50,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 19:38:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-21 19:38:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-21 19:38:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-21 19:38:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-21 19:38:50,494 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-21 19:38:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:50,495 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-21 19:38:50,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:38:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-21 19:38:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 19:38:50,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:50,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:50,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:38:50,499 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:50,499 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-21 19:38:50,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:50,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114630100] [2020-08-21 19:38:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,791 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:50,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:38:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:38:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 19:38:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 19:38:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:38:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 19:38:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 19:38:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 19:38:51,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114630100] [2020-08-21 19:38:51,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:51,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:38:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074953509] [2020-08-21 19:38:51,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:38:51,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:38:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:51,064 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-21 19:38:51,704 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:51,932 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:52,151 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:52,754 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:52,990 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:53,206 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:54,449 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-21 19:38:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:38:54,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-21 19:38:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:54,453 INFO L225 Difference]: With dead ends: 951 [2020-08-21 19:38:54,453 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 19:38:54,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:38:54,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 19:38:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-21 19:38:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 19:38:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-21 19:38:54,534 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-21 19:38:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:54,535 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-21 19:38:54,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:38:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-21 19:38:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 19:38:54,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:54,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:54,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:38:54,539 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:54,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-21 19:38:54,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:54,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135782736] [2020-08-21 19:38:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,822 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:38:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 19:38:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 19:38:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:54,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:55,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:38:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 19:38:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:55,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 19:38:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 19:38:55,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135782736] [2020-08-21 19:38:55,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:55,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:38:55,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360949307] [2020-08-21 19:38:55,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:38:55,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:38:55,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:38:55,080 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-21 19:38:55,528 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:56,230 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:57,203 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:57,500 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:57,775 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:58,016 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:58,318 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:58,572 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:59,885 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:00,130 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:00,385 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:00,616 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:01,437 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-21 19:39:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 19:39:01,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 19:39:01,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:01,444 INFO L225 Difference]: With dead ends: 1172 [2020-08-21 19:39:01,445 INFO L226 Difference]: Without dead ends: 780 [2020-08-21 19:39:01,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 19:39:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-21 19:39:01,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-21 19:39:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-21 19:39:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-21 19:39:01,608 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-21 19:39:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:01,610 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-21 19:39:01,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:39:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-21 19:39:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 19:39:01,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:01,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:01,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:39:01,614 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-21 19:39:01,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:01,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045800073] [2020-08-21 19:39:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,005 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:39:02,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:39:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:39:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 19:39:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:39:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:39:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 19:39:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 19:39:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:39:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 19:39:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 19:39:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 19:39:02,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045800073] [2020-08-21 19:39:02,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:39:02,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 19:39:02,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177293990] [2020-08-21 19:39:02,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 19:39:02,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 19:39:02,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:39:02,666 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-21 19:39:03,472 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:03,780 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:04,030 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:04,271 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:04,905 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:06,109 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:06,456 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:06,747 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:07,017 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:07,378 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:07,651 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:08,201 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 19:39:08,720 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 19:39:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:10,812 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-21 19:39:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 19:39:10,813 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-21 19:39:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:10,818 INFO L225 Difference]: With dead ends: 1398 [2020-08-21 19:39:10,818 INFO L226 Difference]: Without dead ends: 820 [2020-08-21 19:39:10,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 19:39:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-21 19:39:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-21 19:39:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 19:39:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-21 19:39:10,951 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-21 19:39:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:10,952 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-21 19:39:10,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 19:39:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-21 19:39:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 19:39:10,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:10,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:10,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:39:10,956 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-21 19:39:10,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:10,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645718780] [2020-08-21 19:39:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,252 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:39:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:39:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:39:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:39:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:39:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 19:39:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 19:39:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 19:39:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:39:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 19:39:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 19:39:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 19:39:11,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645718780] [2020-08-21 19:39:11,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:39:11,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 19:39:11,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107125052] [2020-08-21 19:39:11,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 19:39:11,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:11,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 19:39:11,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:39:11,425 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-21 19:39:12,058 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:13,986 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:14,271 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:14,550 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:14,939 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:15,214 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:15,618 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-21 19:39:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 19:39:15,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-21 19:39:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:15,625 INFO L225 Difference]: With dead ends: 826 [2020-08-21 19:39:15,625 INFO L226 Difference]: Without dead ends: 823 [2020-08-21 19:39:15,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 19:39:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-21 19:39:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-21 19:39:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 19:39:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-21 19:39:15,761 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-21 19:39:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:15,762 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-21 19:39:15,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 19:39:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-21 19:39:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-21 19:39:15,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:15,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:15,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:39:15,766 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:15,766 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-21 19:39:15,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:15,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591028225] [2020-08-21 19:39:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,136 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:39:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:39:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:39:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:39:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:39:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 19:39:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 19:39:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:39:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:39:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 19:39:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 19:39:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 19:39:16,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591028225] [2020-08-21 19:39:16,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:39:16,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:39:16,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98748873] [2020-08-21 19:39:16,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:39:16,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:16,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:39:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:39:16,509 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-21 19:39:17,117 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:18,027 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:18,588 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:18,869 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:39:19,128 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:39:19,388 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:19,668 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:39:19,926 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:39:21,733 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:22,015 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188