/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:45:04,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:45:04,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:45:04,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:45:04,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:45:04,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:45:04,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:45:04,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:45:04,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:45:04,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:45:04,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:45:04,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:45:04,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:45:04,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:45:04,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:45:04,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:45:04,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:45:04,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:45:04,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:45:04,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:45:04,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:45:04,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:45:04,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:45:04,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:45:04,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:45:04,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:45:04,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:45:04,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:45:04,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:45:04,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:45:04,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:45:04,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:45:04,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:45:04,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:45:04,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:45:04,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:45:04,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:45:04,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:45:04,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:45:04,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:45:04,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:45:04,403 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 18:45:04,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:45:04,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:45:04,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:45:04,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:45:04,444 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:45:04,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:45:04,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:45:04,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:45:04,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:45:04,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:45:04,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:45:04,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:45:04,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:45:04,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:45:04,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:45:04,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:45:04,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:45:04,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:45:04,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:45:04,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:45:04,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:45:04,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:45:04,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:45:04,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:45:04,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:45:04,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:45:04,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:45:04,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:45:04,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:45:04,450 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:45:04,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:45:04,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:45:04,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:45:04,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:45:04,741 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:45:04,741 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-21 18:45:04,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba17502a/46666a753aaa441ea813364b7f895e61/FLAG91c2effe3 [2020-08-21 18:45:05,299 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:45:05,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-21 18:45:05,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba17502a/46666a753aaa441ea813364b7f895e61/FLAG91c2effe3 [2020-08-21 18:45:05,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba17502a/46666a753aaa441ea813364b7f895e61 [2020-08-21 18:45:05,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:45:05,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:45:05,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:45:05,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:45:05,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:45:05,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:45:05" (1/1) ... [2020-08-21 18:45:05,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:05, skipping insertion in model container [2020-08-21 18:45:05,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:45:05" (1/1) ... [2020-08-21 18:45:05,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:45:05,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:45:06,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:45:06,117 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:45:06,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:45:06,243 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:45:06,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06 WrapperNode [2020-08-21 18:45:06,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:45:06,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:45:06,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:45:06,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:45:06,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (1/1) ... [2020-08-21 18:45:06,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:45:06,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:45:06,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:45:06,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:45:06,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (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 18:45:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:45:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:45:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:45:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:45:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 18:45:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 18:45:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:45:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:45:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:45:06,405 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:45:06,405 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:45:06,405 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:45:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:45:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:45:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:45:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:45:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:45:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:45:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:45:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:45:06,408 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:45:06,408 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:45:06,408 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:45:06,408 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:45:06,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:45:06,410 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:45:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:45:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:45:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:45:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:45:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:45:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:45:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:45:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:45:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:45:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:45:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:45:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:45:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:45:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:45:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:45:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:45:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:45:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:45:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:45:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:45:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:45:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:45:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:45:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:45:06,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:45:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:45:09,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:45:09,507 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:45:09,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:45:09 BoogieIcfgContainer [2020-08-21 18:45:09,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:45:09,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:45:09,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:45:09,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:45:09,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:45:05" (1/3) ... [2020-08-21 18:45:09,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6848ebd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:45:09, skipping insertion in model container [2020-08-21 18:45:09,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:06" (2/3) ... [2020-08-21 18:45:09,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6848ebd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:45:09, skipping insertion in model container [2020-08-21 18:45:09,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:45:09" (3/3) ... [2020-08-21 18:45:09,520 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-21 18:45:09,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:45:09,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:45:09,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:45:09,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:45:09,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:45:09,569 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:45:09,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:45:09,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:45:09,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:45:09,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:45:09,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:45:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 18:45:09,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 18:45:09,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:09,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:09,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:09,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-21 18:45:09,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:09,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470308995] [2020-08-21 18:45:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,277 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:45:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:45:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:10,422 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 18:45:10,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470308995] [2020-08-21 18:45:10,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:10,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:45:10,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535517258] [2020-08-21 18:45:10,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:45:10,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:10,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:45:10,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:45:10,449 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-21 18:45:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:11,588 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-21 18:45:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:45:11,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 18:45:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:11,604 INFO L225 Difference]: With dead ends: 296 [2020-08-21 18:45:11,605 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 18:45:11,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:45:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 18:45:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-21 18:45:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 18:45:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-21 18:45:11,723 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-21 18:45:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:11,724 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-21 18:45:11,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:45:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-21 18:45:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:45:11,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:11,736 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 18:45:11,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:45:11,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-21 18:45:11,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:11,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268295859] [2020-08-21 18:45:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,074 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:45:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:45:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:12,122 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 18:45:12,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268295859] [2020-08-21 18:45:12,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:12,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:45:12,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454536627] [2020-08-21 18:45:12,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:45:12,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:12,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:45:12,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:45:12,126 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-21 18:45:12,580 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:13,398 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-21 18:45:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:45:13,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 18:45:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:13,402 INFO L225 Difference]: With dead ends: 237 [2020-08-21 18:45:13,402 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 18:45:13,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:45:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 18:45:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-21 18:45:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 18:45:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-21 18:45:13,442 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-21 18:45:13,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:13,443 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-21 18:45:13,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:45:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-21 18:45:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:45:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:13,445 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] [2020-08-21 18:45:13,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:45:13,445 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-21 18:45:13,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:13,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902731071] [2020-08-21 18:45:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,777 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:45:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:45:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:13,892 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 18:45:13,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902731071] [2020-08-21 18:45:13,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:13,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:45:13,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233917414] [2020-08-21 18:45:13,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:45:13,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:45:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:45:13,894 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-21 18:45:14,331 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:14,659 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:14,915 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:15,137 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:16,315 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-21 18:45:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:45:16,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 18:45:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:16,319 INFO L225 Difference]: With dead ends: 250 [2020-08-21 18:45:16,319 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 18:45:16,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:45:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 18:45:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-21 18:45:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 18:45:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-21 18:45:16,357 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-21 18:45:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:16,357 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-21 18:45:16,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:45:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-21 18:45:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:45:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:16,359 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 18:45:16,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:45:16,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-21 18:45:16,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:16,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289006160] [2020-08-21 18:45:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,649 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:16,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:45:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:45:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:45:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:16,776 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 18:45:16,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289006160] [2020-08-21 18:45:16,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:16,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:45:16,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214662538] [2020-08-21 18:45:16,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:45:16,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:45:16,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:45:16,779 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-21 18:45:17,205 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:18,297 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:18,916 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-21 18:45:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:45:18,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-21 18:45:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:18,921 INFO L225 Difference]: With dead ends: 349 [2020-08-21 18:45:18,921 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 18:45:18,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:45:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 18:45:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-21 18:45:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-21 18:45:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-21 18:45:18,984 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-21 18:45:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:18,985 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-21 18:45:18,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:45:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-21 18:45:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 18:45:18,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:18,991 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 18:45:18,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:45:18,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:18,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:18,991 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-21 18:45:18,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:18,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650178894] [2020-08-21 18:45:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,318 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:45:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:45:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:45:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:19,418 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 18:45:19,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650178894] [2020-08-21 18:45:19,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:19,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:45:19,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347696217] [2020-08-21 18:45:19,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:45:19,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:45:19,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:45:19,421 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-21 18:45:19,952 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:21,096 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:21,352 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:21,583 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:21,808 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:22,937 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-21 18:45:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 18:45:22,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 18:45:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:22,944 INFO L225 Difference]: With dead ends: 611 [2020-08-21 18:45:22,944 INFO L226 Difference]: Without dead ends: 434 [2020-08-21 18:45:22,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 18:45:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-21 18:45:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-21 18:45:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-21 18:45:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-21 18:45:23,048 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-21 18:45:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:23,049 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-21 18:45:23,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:45:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-21 18:45:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 18:45:23,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:23,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:23,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:45:23,051 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:23,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-21 18:45:23,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:23,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043850729] [2020-08-21 18:45:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,325 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:23,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:45:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:45:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:45:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 18:45:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:23,454 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 18:45:23,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043850729] [2020-08-21 18:45:23,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:23,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:45:23,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58856425] [2020-08-21 18:45:23,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:45:23,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:23,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:45:23,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:45:23,457 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-21 18:45:24,443 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:25,514 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:25,742 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:26,014 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:26,281 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:27,320 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-21 18:45:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 18:45:27,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 18:45:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:27,325 INFO L225 Difference]: With dead ends: 802 [2020-08-21 18:45:27,325 INFO L226 Difference]: Without dead ends: 472 [2020-08-21 18:45:27,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:45:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-21 18:45:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-21 18:45:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-21 18:45:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-21 18:45:27,432 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-21 18:45:27,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:27,432 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-21 18:45:27,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:45:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-21 18:45:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 18:45:27,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:27,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:27,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:45:27,434 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-21 18:45:27,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:27,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017951692] [2020-08-21 18:45:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,742 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:45:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:45:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:45:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:45:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:27,978 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 18:45:27,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017951692] [2020-08-21 18:45:27,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:27,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:45:27,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479672290] [2020-08-21 18:45:27,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:45:27,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:27,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:45:27,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:45:27,988 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-21 18:45:29,242 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:29,478 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:45:29,719 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:29,971 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:30,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:30,843 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-21 18:45:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:45:30,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 18:45:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:30,847 INFO L225 Difference]: With dead ends: 805 [2020-08-21 18:45:30,847 INFO L226 Difference]: Without dead ends: 476 [2020-08-21 18:45:30,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:45:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-21 18:45:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-21 18:45:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-21 18:45:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-21 18:45:30,937 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-21 18:45:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:30,938 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-21 18:45:30,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:45:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-21 18:45:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 18:45:30,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:30,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:30,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:45:30,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:30,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:30,941 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-21 18:45:30,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:30,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982395191] [2020-08-21 18:45:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,234 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:31,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:45:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:45:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:45:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:45:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:31,434 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 18:45:31,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982395191] [2020-08-21 18:45:31,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:31,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:45:31,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270483179] [2020-08-21 18:45:31,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:45:31,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:45:31,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:45:31,438 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-21 18:45:32,135 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:32,367 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:32,590 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:33,258 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:33,509 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:33,743 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:34,909 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-21 18:45:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:45:34,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-21 18:45:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:34,916 INFO L225 Difference]: With dead ends: 829 [2020-08-21 18:45:34,916 INFO L226 Difference]: Without dead ends: 490 [2020-08-21 18:45:34,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:45:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-21 18:45:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-21 18:45:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-21 18:45:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-21 18:45:35,012 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-21 18:45:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:35,012 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-21 18:45:35,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:45:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-21 18:45:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 18:45:35,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:35,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:35,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:45:35,016 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:35,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-21 18:45:35,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:35,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213254614] [2020-08-21 18:45:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,277 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:35,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:45:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:45:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:45:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:45:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:35,413 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 18:45:35,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213254614] [2020-08-21 18:45:35,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:35,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:45:35,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084787613] [2020-08-21 18:45:35,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:45:35,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:35,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:45:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:45:35,415 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-21 18:45:35,802 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:36,342 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:38,624 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-21 18:45:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 18:45:38,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-21 18:45:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:38,630 INFO L225 Difference]: With dead ends: 1177 [2020-08-21 18:45:38,631 INFO L226 Difference]: Without dead ends: 830 [2020-08-21 18:45:38,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 18:45:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-21 18:45:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-21 18:45:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-21 18:45:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-21 18:45:38,755 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-21 18:45:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:38,755 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-21 18:45:38,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:45:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-21 18:45:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:45:38,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:38,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:38,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:45:38,758 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:38,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-21 18:45:38,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:38,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112068983] [2020-08-21 18:45:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:38,993 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:45:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:45:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:45:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:45:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:45:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:39,084 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 18:45:39,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112068983] [2020-08-21 18:45:39,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:39,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:45:39,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330278678] [2020-08-21 18:45:39,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:45:39,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:39,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:45:39,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:45:39,087 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-21 18:45:39,577 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:41,961 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-21 18:45:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 18:45:41,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 18:45:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:41,970 INFO L225 Difference]: With dead ends: 1357 [2020-08-21 18:45:41,971 INFO L226 Difference]: Without dead ends: 1354 [2020-08-21 18:45:41,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 18:45:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-21 18:45:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-21 18:45:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-21 18:45:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-21 18:45:42,191 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-21 18:45:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:42,191 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-21 18:45:42,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:45:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-21 18:45:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 18:45:42,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:42,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:42,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:45:42,196 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-21 18:45:42,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:42,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507501396] [2020-08-21 18:45:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,461 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:45:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:45:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:45:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:45:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:45:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 18:45:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 18:45:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:45:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 18:45:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:45:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 18:45:42,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507501396] [2020-08-21 18:45:42,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:45:42,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 18:45:42,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448956452] [2020-08-21 18:45:42,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 18:45:42,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:42,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 18:45:42,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:45:42,756 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-21 18:45:43,379 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:43,705 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:45:43,953 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:45:44,212 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:45:44,925 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:46,027 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:46,363 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:47,703 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:47,949 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:48,212 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:48,459 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:48,697 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:48,937 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:49,224 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:49,459 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:50,329 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-21 18:45:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 18:45:50,329 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-21 18:45:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:50,336 INFO L225 Difference]: With dead ends: 2141 [2020-08-21 18:45:50,337 INFO L226 Difference]: Without dead ends: 1042 [2020-08-21 18:45:50,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 18:45:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-21 18:45:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-21 18:45:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-21 18:45:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-21 18:45:50,502 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-21 18:45:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:50,502 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-21 18:45:50,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 18:45:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-21 18:45:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 18:45:50,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:50,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:50,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:45:50,507 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:50,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-21 18:45:50,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:50,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34267300] [2020-08-21 18:45:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,767 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:45:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:45:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:45:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:45:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:45:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 18:45:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 18:45:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:45:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 18:45:50,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34267300] [2020-08-21 18:45:50,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:45:50,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:45:50,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542094826] [2020-08-21 18:45:50,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:45:50,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:45:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:45:50,980 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-21 18:45:51,603 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:51,835 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:52,059 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:53,020 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:54,268 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-21 18:45:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:45:54,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 18:45:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:54,269 INFO L225 Difference]: With dead ends: 1616 [2020-08-21 18:45:54,269 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:45:54,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 18:45:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:45:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:45:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:45:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:45:54,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-21 18:45:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:54,277 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:45:54,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:45:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:45:54,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:45:54,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:45:54,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:45:54,761 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-21 18:45:54,920 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-21 18:45:55,091 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-21 18:45:55,264 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-21 18:45:55,426 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-21 18:45:55,623 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-21 18:45:55,732 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-21 18:45:55,888 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-21 18:45:57,909 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-21 18:45:58,522 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-21 18:45:59,589 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 308 [2020-08-21 18:46:00,858 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 290 [2020-08-21 18:46:03,120 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 304 [2020-08-21 18:46:03,928 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 39 [2020-08-21 18:46:04,772 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 25 [2020-08-21 18:46:04,948 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 29