/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:08:51,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:08:51,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:08:51,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:08:51,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:08:51,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:08:51,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:08:51,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:08:51,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:08:51,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:08:51,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:08:51,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:08:51,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:08:51,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:08:51,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:08:51,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:08:51,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:08:51,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:08:51,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:08:51,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:08:51,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:08:51,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:08:51,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:08:51,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:08:51,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:08:51,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:08:51,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:08:51,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:08:51,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:08:51,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:08:51,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:08:51,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:08:51,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:08:51,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:08:51,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:08:51,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:08:51,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:08:51,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:08:51,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:08:51,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:08:51,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:08:51,388 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 [2020-08-19 00:08:51,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:08:51,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:08:51,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:08:51,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:08:51,432 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:08:51,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:08:51,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:08:51,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:08:51,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:08:51,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:08:51,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:08:51,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:08:51,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:08:51,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:08:51,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:08:51,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:08:51,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:08:51,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:08:51,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:08:51,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:08:51,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:08:51,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:08:51,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:08:51,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:08:51,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:08:51,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:08:51,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:08:51,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:08:51,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:08:51,438 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:08:51,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:08:51,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:08:51,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:08:51,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:08:51,799 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:08:51,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-19 00:08:51,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae81e611d/8e8e82c125064553bbf9e1782d87810b/FLAG6511d4bda [2020-08-19 00:08:52,363 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:08:52,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-19 00:08:52,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae81e611d/8e8e82c125064553bbf9e1782d87810b/FLAG6511d4bda [2020-08-19 00:08:52,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae81e611d/8e8e82c125064553bbf9e1782d87810b [2020-08-19 00:08:52,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:08:52,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:08:52,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:52,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:08:52,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:08:52,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:52" (1/1) ... [2020-08-19 00:08:52,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fff13d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:52, skipping insertion in model container [2020-08-19 00:08:52,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:52" (1/1) ... [2020-08-19 00:08:52,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:08:52,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:08:53,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:53,185 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:08:53,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:53,310 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:08:53,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53 WrapperNode [2020-08-19 00:08:53,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:53,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:08:53,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:08:53,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:08:53,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (1/1) ... [2020-08-19 00:08:53,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:08:53,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:08:53,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:08:53,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:08:53,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (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 [2020-08-19 00:08:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:08:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:08:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:08:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:08:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:08:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:08:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:08:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:08:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:08:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:08:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:08:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:08:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:08:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:08:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:08:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:08:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:08:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:08:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:08:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:08:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:08:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:08:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:08:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:08:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:08:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:08:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:08:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:08:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:08:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:08:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:08:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:08:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:08:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:08:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:08:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:08:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:08:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:08:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:08:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:08:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:08:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:08:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:08:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:08:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:08:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:08:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:08:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:08:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:08:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:08:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:08:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:08:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:08:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:08:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:08:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:08:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:08:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:08:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:08:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:08:54,577 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:08:54,578 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:08:54,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:54 BoogieIcfgContainer [2020-08-19 00:08:54,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:08:54,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:08:54,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:08:54,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:08:54,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:08:52" (1/3) ... [2020-08-19 00:08:54,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7796a6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:54, skipping insertion in model container [2020-08-19 00:08:54,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:53" (2/3) ... [2020-08-19 00:08:54,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7796a6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:54, skipping insertion in model container [2020-08-19 00:08:54,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:54" (3/3) ... [2020-08-19 00:08:54,601 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2020-08-19 00:08:54,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:08:54,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:08:54,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:08:54,659 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:08:54,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:08:54,660 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:08:54,660 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:08:54,660 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:08:54,661 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:08:54,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:08:54,661 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:08:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-19 00:08:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:08:54,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:54,697 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] [2020-08-19 00:08:54,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2020-08-19 00:08:54,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:54,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123203289] [2020-08-19 00:08:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,395 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:08:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:55,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123203289] [2020-08-19 00:08:55,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:55,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:08:55,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153882228] [2020-08-19 00:08:55,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:08:55,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:55,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:08:55,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:55,535 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-19 00:08:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:56,744 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2020-08-19 00:08:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:08:56,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:08:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:56,762 INFO L225 Difference]: With dead ends: 306 [2020-08-19 00:08:56,762 INFO L226 Difference]: Without dead ends: 170 [2020-08-19 00:08:56,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-19 00:08:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2020-08-19 00:08:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-19 00:08:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-19 00:08:56,871 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2020-08-19 00:08:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:56,872 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-19 00:08:56,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:08:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-19 00:08:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:08:56,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:56,876 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] [2020-08-19 00:08:56,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:08:56,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:56,877 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2020-08-19 00:08:56,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:56,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064074084] [2020-08-19 00:08:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,234 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:57,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:08:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:57,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064074084] [2020-08-19 00:08:57,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:57,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:08:57,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21155278] [2020-08-19 00:08:57,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:08:57,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:57,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:08:57,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:08:57,292 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2020-08-19 00:08:57,788 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:58,689 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2020-08-19 00:08:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:08:58,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:08:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:58,692 INFO L225 Difference]: With dead ends: 247 [2020-08-19 00:08:58,692 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 00:08:58,694 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 [2020-08-19 00:08:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 00:08:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-19 00:08:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 00:08:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-19 00:08:58,731 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2020-08-19 00:08:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:58,732 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-19 00:08:58,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:08:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-19 00:08:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:08:58,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:58,734 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] [2020-08-19 00:08:58,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:08:58,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2020-08-19 00:08:58,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:58,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712036718] [2020-08-19 00:08:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,059 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:08:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:59,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712036718] [2020-08-19 00:08:59,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:59,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:59,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046120191] [2020-08-19 00:08:59,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:59,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:59,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:59,166 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2020-08-19 00:08:59,553 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:59,896 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:00,155 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:00,401 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:01,616 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2020-08-19 00:09:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:09:01,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 00:09:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:01,620 INFO L225 Difference]: With dead ends: 260 [2020-08-19 00:09:01,620 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 00:09:01,622 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 [2020-08-19 00:09:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 00:09:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-19 00:09:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 00:09:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-19 00:09:01,687 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2020-08-19 00:09:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:01,688 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-19 00:09:01,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:09:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-19 00:09:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:09:01,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:01,691 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] [2020-08-19 00:09:01,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:09:01,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2020-08-19 00:09:01,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:01,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556381090] [2020-08-19 00:09:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:01,958 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:01,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:09:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:09:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:09:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:02,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556381090] [2020-08-19 00:09:02,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:02,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:09:02,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565982230] [2020-08-19 00:09:02,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:09:02,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:02,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:09:02,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:09:02,052 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2020-08-19 00:09:02,387 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:03,672 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:04,405 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2020-08-19 00:09:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:09:04,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-19 00:09:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:04,409 INFO L225 Difference]: With dead ends: 359 [2020-08-19 00:09:04,410 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 00:09:04,411 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 [2020-08-19 00:09:04,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 00:09:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2020-08-19 00:09:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-19 00:09:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-08-19 00:09:04,462 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2020-08-19 00:09:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:04,463 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-08-19 00:09:04,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:09:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-08-19 00:09:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:09:04,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:04,465 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] [2020-08-19 00:09:04,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:09:04,466 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:04,466 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2020-08-19 00:09:04,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:04,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610906038] [2020-08-19 00:09:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,766 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:09:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:09:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:09:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:04,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610906038] [2020-08-19 00:09:04,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:04,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:09:04,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075690112] [2020-08-19 00:09:04,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:09:04,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:09:04,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:09:04,932 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-08-19 00:09:05,327 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:06,513 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:06,790 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:07,067 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:07,291 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:08,564 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2020-08-19 00:09:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:09:08,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 00:09:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:08,571 INFO L225 Difference]: With dead ends: 626 [2020-08-19 00:09:08,571 INFO L226 Difference]: Without dead ends: 444 [2020-08-19 00:09:08,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:09:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-08-19 00:09:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2020-08-19 00:09:08,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 00:09:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2020-08-19 00:09:08,659 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2020-08-19 00:09:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:08,662 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2020-08-19 00:09:08,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:09:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2020-08-19 00:09:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:09:08,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:08,665 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] [2020-08-19 00:09:08,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:09:08,666 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:08,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:08,666 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2020-08-19 00:09:08,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:08,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669957000] [2020-08-19 00:09:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,021 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:09:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:09:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:09:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:09,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669957000] [2020-08-19 00:09:09,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:09,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:09:09,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679025517] [2020-08-19 00:09:09,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:09:09,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:09,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:09:09,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:09:09,169 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2020-08-19 00:09:09,740 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:10,908 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:11,158 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:11,405 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:11,666 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:12,653 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2020-08-19 00:09:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:09:12,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 00:09:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:12,659 INFO L225 Difference]: With dead ends: 822 [2020-08-19 00:09:12,659 INFO L226 Difference]: Without dead ends: 482 [2020-08-19 00:09:12,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 00:09:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-19 00:09:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2020-08-19 00:09:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-19 00:09:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-19 00:09:12,750 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2020-08-19 00:09:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:12,751 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-19 00:09:12,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:09:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-19 00:09:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:09:12,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:12,753 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] [2020-08-19 00:09:12,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:09:12,753 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2020-08-19 00:09:12,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:12,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850629577] [2020-08-19 00:09:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,022 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:09:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:09:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:09:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:13,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850629577] [2020-08-19 00:09:13,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:13,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:09:13,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390607305] [2020-08-19 00:09:13,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:09:13,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:13,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:09:13,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:09:13,170 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2020-08-19 00:09:14,206 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:14,444 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:09:14,679 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:14,908 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:15,994 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2020-08-19 00:09:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:09:15,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 00:09:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:15,998 INFO L225 Difference]: With dead ends: 825 [2020-08-19 00:09:15,999 INFO L226 Difference]: Without dead ends: 486 [2020-08-19 00:09:16,001 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 [2020-08-19 00:09:16,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-19 00:09:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2020-08-19 00:09:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-08-19 00:09:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2020-08-19 00:09:16,071 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2020-08-19 00:09:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:16,072 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2020-08-19 00:09:16,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:09:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2020-08-19 00:09:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:09:16,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:16,074 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] [2020-08-19 00:09:16,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:09:16,074 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2020-08-19 00:09:16,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:16,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270362268] [2020-08-19 00:09:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,325 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:16,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:09:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:09:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:09:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:16,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270362268] [2020-08-19 00:09:16,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:16,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:09:16,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530375749] [2020-08-19 00:09:16,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:09:16,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:16,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:09:16,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:09:16,547 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2020-08-19 00:09:17,382 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:17,639 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:17,859 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:18,522 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:18,764 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:19,007 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:20,258 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2020-08-19 00:09:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:09:20,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-19 00:09:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:20,264 INFO L225 Difference]: With dead ends: 849 [2020-08-19 00:09:20,264 INFO L226 Difference]: Without dead ends: 500 [2020-08-19 00:09:20,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:09:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-19 00:09:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-19 00:09:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-19 00:09:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2020-08-19 00:09:20,348 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2020-08-19 00:09:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:20,348 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2020-08-19 00:09:20,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:09:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2020-08-19 00:09:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:09:20,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:20,350 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] [2020-08-19 00:09:20,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:09:20,351 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:20,351 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2020-08-19 00:09:20,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:20,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752391224] [2020-08-19 00:09:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,613 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:09:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:09:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:09:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:20,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752391224] [2020-08-19 00:09:20,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:20,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:09:20,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090088131] [2020-08-19 00:09:20,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:09:20,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:20,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:09:20,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:09:20,822 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2020-08-19 00:09:21,423 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:22,213 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:24,619 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2020-08-19 00:09:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:09:24,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-19 00:09:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:24,626 INFO L225 Difference]: With dead ends: 1197 [2020-08-19 00:09:24,626 INFO L226 Difference]: Without dead ends: 840 [2020-08-19 00:09:24,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:09:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-19 00:09:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2020-08-19 00:09:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-19 00:09:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2020-08-19 00:09:24,767 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2020-08-19 00:09:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:24,769 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2020-08-19 00:09:24,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:09:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2020-08-19 00:09:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 00:09:24,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:24,772 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] [2020-08-19 00:09:24,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:09:24,772 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2020-08-19 00:09:24,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:24,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872851502] [2020-08-19 00:09:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,070 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:25,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:09:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:09:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:09:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:25,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872851502] [2020-08-19 00:09:25,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:25,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:09:25,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785294186] [2020-08-19 00:09:25,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:09:25,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:09:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:09:25,172 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2020-08-19 00:09:25,796 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:28,710 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2020-08-19 00:09:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 00:09:28,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 00:09:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:28,721 INFO L225 Difference]: With dead ends: 1377 [2020-08-19 00:09:28,721 INFO L226 Difference]: Without dead ends: 1374 [2020-08-19 00:09:28,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:09:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-08-19 00:09:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2020-08-19 00:09:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-08-19 00:09:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2020-08-19 00:09:28,918 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2020-08-19 00:09:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:28,918 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2020-08-19 00:09:28,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:09:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2020-08-19 00:09:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 00:09:28,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:28,924 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] [2020-08-19 00:09:28,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:09:28,924 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:28,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2020-08-19 00:09:28,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:28,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811460885] [2020-08-19 00:09:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,258 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:09:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:09:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:09:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 00:09:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 00:09:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 00:09:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 00:09:29,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811460885] [2020-08-19 00:09:29,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:29,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 00:09:29,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714647985] [2020-08-19 00:09:29,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:09:29,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:29,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:09:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:09:29,517 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 13 states. [2020-08-19 00:09:30,150 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:30,431 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:30,664 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:31,683 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:33,637 INFO L93 Difference]: Finished difference Result 2071 states and 2568 transitions. [2020-08-19 00:09:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 00:09:33,638 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 00:09:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:33,646 INFO L225 Difference]: With dead ends: 2071 [2020-08-19 00:09:33,646 INFO L226 Difference]: Without dead ends: 1084 [2020-08-19 00:09:33,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 00:09:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-19 00:09:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 948. [2020-08-19 00:09:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-19 00:09:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2020-08-19 00:09:33,856 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2020-08-19 00:09:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:33,860 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2020-08-19 00:09:33,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:09:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2020-08-19 00:09:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 00:09:33,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:33,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:33,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:09:33,868 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1764550393, now seen corresponding path program 1 times [2020-08-19 00:09:33,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:33,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339207197] [2020-08-19 00:09:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,294 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:09:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:09:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:09:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 00:09:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:09:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:09:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 00:09:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 00:09:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-19 00:09:34,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339207197] [2020-08-19 00:09:34,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:34,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:09:34,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111916815] [2020-08-19 00:09:34,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:09:34,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:34,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:09:34,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:09:34,680 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand 15 states. [2020-08-19 00:09:35,311 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:36,365 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:38,604 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-19 00:09:39,123 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-19 00:09:39,590 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-19 00:09:40,615 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 00:09:40,901 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:41,163 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:41,412 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:43,264 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-19 00:09:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:44,343 INFO L93 Difference]: Finished difference Result 3031 states and 3876 transitions. [2020-08-19 00:09:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-19 00:09:44,343 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-19 00:09:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:44,358 INFO L225 Difference]: With dead ends: 3031 [2020-08-19 00:09:44,359 INFO L226 Difference]: Without dead ends: 2243 [2020-08-19 00:09:44,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2020-08-19 00:09:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-08-19 00:09:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1920. [2020-08-19 00:09:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-08-19 00:09:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2261 transitions. [2020-08-19 00:09:44,856 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2261 transitions. Word has length 154 [2020-08-19 00:09:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:44,857 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2261 transitions. [2020-08-19 00:09:44,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:09:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2261 transitions. [2020-08-19 00:09:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 00:09:44,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:44,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:44,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:09:44,861 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:44,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1836936951, now seen corresponding path program 1 times [2020-08-19 00:09:44,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:44,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135261949] [2020-08-19 00:09:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,193 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:09:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:09:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:09:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 00:09:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:09:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:09:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 00:09:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 00:09:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 00:09:45,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135261949] [2020-08-19 00:09:45,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:45,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:09:45,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521847987] [2020-08-19 00:09:45,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:09:45,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:45,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:09:45,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:09:45,461 INFO L87 Difference]: Start difference. First operand 1920 states and 2261 transitions. Second operand 15 states. [2020-08-19 00:09:46,431 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:46,682 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:46,909 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:48,789 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:49,037 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:49,288 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191