/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:58:01,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:58:01,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:58:01,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:58:01,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:58:01,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:58:01,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:58:01,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:58:01,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:58:01,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:58:01,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:58:01,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:58:01,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:58:01,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:58:01,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:58:01,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:58:01,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:58:01,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:58:01,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:58:01,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:58:01,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:58:01,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:58:01,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:58:01,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:58:01,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:58:01,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:58:01,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:58:01,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:58:01,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:58:01,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:58:01,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:58:01,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:58:01,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:58:01,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:58:01,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:58:01,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:58:01,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:58:01,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:58:01,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:58:01,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:58:01,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:58:01,417 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 [2020-08-22 02:58:01,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:58:01,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:58:01,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:58:01,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:58:01,466 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:58:01,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:58:01,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:58:01,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:58:01,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:58:01,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:58:01,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:58:01,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:58:01,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:58:01,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:58:01,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:58:01,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:58:01,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:58:01,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:58:01,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:58:01,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:58:01,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:58:01,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:58:01,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:58:01,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:58:01,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:58:01,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:58:01,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:58:01,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:58:01,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:58:01,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:58:01,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:58:01,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:58:01,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:58:01,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:58:01,799 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:58:01,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-22 02:58:01,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db6d6c577/19e77f78c0024fc0b522c360d452534f/FLAGa9d33408d [2020-08-22 02:58:02,455 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:58:02,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-22 02:58:02,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db6d6c577/19e77f78c0024fc0b522c360d452534f/FLAGa9d33408d [2020-08-22 02:58:02,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db6d6c577/19e77f78c0024fc0b522c360d452534f [2020-08-22 02:58:02,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:58:02,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:58:02,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:58:02,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:58:02,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:58:02,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:58:02" (1/1) ... [2020-08-22 02:58:02,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b530acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:02, skipping insertion in model container [2020-08-22 02:58:02,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:58:02" (1/1) ... [2020-08-22 02:58:02,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:58:02,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:58:03,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:58:03,317 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:58:03,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:58:03,471 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:58:03,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03 WrapperNode [2020-08-22 02:58:03,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:58:03,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:58:03,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:58:03,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:58:03,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (1/1) ... [2020-08-22 02:58:03,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:58:03,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:58:03,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:58:03,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:58:03,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (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 [2020-08-22 02:58:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:58:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:58:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:58:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:58:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:58:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:58:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:58:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:58:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:58:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:58:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:58:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:58:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:58:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:58:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:58:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:58:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:58:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:58:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:58:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:58:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:58:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:58:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:58:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:58:03,628 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:58:03,628 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:58:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:58:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:58:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:58:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:58:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:58:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:58:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:58:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:58:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:58:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:58:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:58:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:58:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:58:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:58:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:58:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:58:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:58:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:58:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:58:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:58:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:58:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:58:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:58:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:58:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:58:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:58:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:58:04,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:58:04,721 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:58:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:58:04 BoogieIcfgContainer [2020-08-22 02:58:04,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:58:04,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:58:04,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:58:04,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:58:04,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:58:02" (1/3) ... [2020-08-22 02:58:04,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c5316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:58:04, skipping insertion in model container [2020-08-22 02:58:04,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:58:03" (2/3) ... [2020-08-22 02:58:04,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c5316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:58:04, skipping insertion in model container [2020-08-22 02:58:04,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:58:04" (3/3) ... [2020-08-22 02:58:04,736 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2020-08-22 02:58:04,748 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:58:04,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:58:04,771 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:58:04,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:58:04,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:58:04,798 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:58:04,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:58:04,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:58:04,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:58:04,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:58:04,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:58:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 02:58:04,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 02:58:04,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:04,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:04,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:04,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:04,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2020-08-22 02:58:04,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:04,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495721804] [2020-08-22 02:58:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,510 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:58:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:58:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:05,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495721804] [2020-08-22 02:58:05,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:05,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:58:05,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41122146] [2020-08-22 02:58:05,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:58:05,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:58:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:58:05,667 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-22 02:58:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:06,872 INFO L93 Difference]: Finished difference Result 350 states and 444 transitions. [2020-08-22 02:58:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:58:06,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 02:58:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:06,889 INFO L225 Difference]: With dead ends: 350 [2020-08-22 02:58:06,890 INFO L226 Difference]: Without dead ends: 192 [2020-08-22 02:58:06,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:58:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-22 02:58:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 159. [2020-08-22 02:58:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 02:58:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-08-22 02:58:06,991 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2020-08-22 02:58:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:06,991 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-08-22 02:58:06,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:58:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-08-22 02:58:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 02:58:06,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:06,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:06,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:58:06,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:06,997 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2020-08-22 02:58:06,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:06,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082602351] [2020-08-22 02:58:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,375 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:58:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:58:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:58:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:07,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082602351] [2020-08-22 02:58:07,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:07,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:58:07,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280865230] [2020-08-22 02:58:07,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:58:07,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:07,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:58:07,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:58:07,445 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 5 states. [2020-08-22 02:58:07,876 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:08,921 INFO L93 Difference]: Finished difference Result 289 states and 348 transitions. [2020-08-22 02:58:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:58:08,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 02:58:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:08,925 INFO L225 Difference]: With dead ends: 289 [2020-08-22 02:58:08,926 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 02:58:08,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:58:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 02:58:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2020-08-22 02:58:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 02:58:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-08-22 02:58:09,000 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2020-08-22 02:58:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:09,001 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-08-22 02:58:09,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:58:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-08-22 02:58:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 02:58:09,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:09,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:09,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:58:09,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:09,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2020-08-22 02:58:09,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:09,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076952854] [2020-08-22 02:58:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,391 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:58:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:58:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:09,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076952854] [2020-08-22 02:58:09,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:09,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:58:09,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936990852] [2020-08-22 02:58:09,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:58:09,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:09,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:58:09,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:58:09,486 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 9 states. [2020-08-22 02:58:09,914 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:10,240 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:10,475 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:10,702 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:11,557 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:13,544 INFO L93 Difference]: Finished difference Result 499 states and 610 transitions. [2020-08-22 02:58:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:58:13,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 02:58:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:13,551 INFO L225 Difference]: With dead ends: 499 [2020-08-22 02:58:13,551 INFO L226 Difference]: Without dead ends: 377 [2020-08-22 02:58:13,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:58:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-22 02:58:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 320. [2020-08-22 02:58:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 02:58:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2020-08-22 02:58:13,631 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2020-08-22 02:58:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:13,632 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2020-08-22 02:58:13,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:58:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2020-08-22 02:58:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:58:13,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:13,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:13,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:58:13,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2020-08-22 02:58:13,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:13,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226262937] [2020-08-22 02:58:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:13,946 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:13,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:14,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:58:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:58:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:58:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:58:14,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226262937] [2020-08-22 02:58:14,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:14,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:58:14,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354230483] [2020-08-22 02:58:14,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:58:14,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:14,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:58:14,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:58:14,045 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 9 states. [2020-08-22 02:58:14,414 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:15,036 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:16,058 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:16,298 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:16,573 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:16,856 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:17,593 INFO L93 Difference]: Finished difference Result 803 states and 1032 transitions. [2020-08-22 02:58:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:58:17,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 02:58:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:17,600 INFO L225 Difference]: With dead ends: 803 [2020-08-22 02:58:17,600 INFO L226 Difference]: Without dead ends: 511 [2020-08-22 02:58:17,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:58:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-08-22 02:58:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 447. [2020-08-22 02:58:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-08-22 02:58:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 535 transitions. [2020-08-22 02:58:17,701 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 535 transitions. Word has length 70 [2020-08-22 02:58:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:17,702 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 535 transitions. [2020-08-22 02:58:17,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:58:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 535 transitions. [2020-08-22 02:58:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:58:17,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:17,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:17,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:58:17,705 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:17,705 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2020-08-22 02:58:17,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:17,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511193545] [2020-08-22 02:58:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,949 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:17,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:58:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:58:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:18,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511193545] [2020-08-22 02:58:18,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:18,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:58:18,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069510852] [2020-08-22 02:58:18,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:58:18,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:18,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:58:18,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:58:18,150 INFO L87 Difference]: Start difference. First operand 447 states and 535 transitions. Second operand 9 states. [2020-08-22 02:58:19,206 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:19,447 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:19,720 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:19,958 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:20,831 INFO L93 Difference]: Finished difference Result 956 states and 1224 transitions. [2020-08-22 02:58:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:58:20,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-22 02:58:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:20,837 INFO L225 Difference]: With dead ends: 956 [2020-08-22 02:58:20,837 INFO L226 Difference]: Without dead ends: 537 [2020-08-22 02:58:20,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:58:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-22 02:58:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 460. [2020-08-22 02:58:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-22 02:58:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2020-08-22 02:58:20,927 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2020-08-22 02:58:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:20,927 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2020-08-22 02:58:20,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:58:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2020-08-22 02:58:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:58:20,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:20,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:20,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:58:20,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2020-08-22 02:58:20,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:20,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176449865] [2020-08-22 02:58:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,189 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:58:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:58:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:21,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176449865] [2020-08-22 02:58:21,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:21,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:58:21,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079567824] [2020-08-22 02:58:21,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:58:21,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:58:21,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:58:21,332 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 11 states. [2020-08-22 02:58:21,902 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:22,129 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:22,356 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:23,104 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:23,381 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:23,627 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:24,655 INFO L93 Difference]: Finished difference Result 979 states and 1248 transitions. [2020-08-22 02:58:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:58:24,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-22 02:58:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:24,661 INFO L225 Difference]: With dead ends: 979 [2020-08-22 02:58:24,661 INFO L226 Difference]: Without dead ends: 547 [2020-08-22 02:58:24,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:58:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-08-22 02:58:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 468. [2020-08-22 02:58:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-22 02:58:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-22 02:58:24,746 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2020-08-22 02:58:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:24,747 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-22 02:58:24,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:58:24,747 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-22 02:58:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:58:24,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:24,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:24,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:58:24,750 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:24,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:24,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2020-08-22 02:58:24,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:24,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721912017] [2020-08-22 02:58:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,023 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:58:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:58:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:25,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721912017] [2020-08-22 02:58:25,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:25,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:58:25,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729330785] [2020-08-22 02:58:25,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:58:25,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:25,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:58:25,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:58:25,166 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 7 states. [2020-08-22 02:58:25,582 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:26,118 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:28,124 INFO L93 Difference]: Finished difference Result 1447 states and 1864 transitions. [2020-08-22 02:58:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:58:28,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-22 02:58:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:28,138 INFO L225 Difference]: With dead ends: 1447 [2020-08-22 02:58:28,138 INFO L226 Difference]: Without dead ends: 1007 [2020-08-22 02:58:28,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:58:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-08-22 02:58:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 933. [2020-08-22 02:58:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-08-22 02:58:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1131 transitions. [2020-08-22 02:58:28,383 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1131 transitions. Word has length 107 [2020-08-22 02:58:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:28,384 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1131 transitions. [2020-08-22 02:58:28,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:58:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1131 transitions. [2020-08-22 02:58:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 02:58:28,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:28,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:28,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:58:28,393 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:28,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:28,394 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2020-08-22 02:58:28,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:28,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378974798] [2020-08-22 02:58:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,800 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:58:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:58:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:58:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 02:58:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:28,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378974798] [2020-08-22 02:58:28,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:28,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:58:28,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118471521] [2020-08-22 02:58:28,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:58:28,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:28,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:58:29,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:58:29,000 INFO L87 Difference]: Start difference. First operand 933 states and 1131 transitions. Second operand 12 states. [2020-08-22 02:58:29,444 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:30,135 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:30,792 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:31,119 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:31,362 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:31,637 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:31,906 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:34,053 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:34,342 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:35,040 INFO L93 Difference]: Finished difference Result 2649 states and 3420 transitions. [2020-08-22 02:58:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:58:35,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-22 02:58:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:35,060 INFO L225 Difference]: With dead ends: 2649 [2020-08-22 02:58:35,060 INFO L226 Difference]: Without dead ends: 1932 [2020-08-22 02:58:35,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 02:58:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-08-22 02:58:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1638. [2020-08-22 02:58:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-08-22 02:58:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1972 transitions. [2020-08-22 02:58:35,336 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1972 transitions. Word has length 111 [2020-08-22 02:58:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:35,339 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1972 transitions. [2020-08-22 02:58:35,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:58:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1972 transitions. [2020-08-22 02:58:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 02:58:35,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:35,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:35,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:58:35,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2020-08-22 02:58:35,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:35,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227018213] [2020-08-22 02:58:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,643 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:58:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 02:58:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:58:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 02:58:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 02:58:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 02:58:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 02:58:35,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227018213] [2020-08-22 02:58:35,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:35,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:58:35,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805702796] [2020-08-22 02:58:35,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:58:35,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:35,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:58:35,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:58:35,928 INFO L87 Difference]: Start difference. First operand 1638 states and 1972 transitions. Second operand 16 states. [2020-08-22 02:58:36,539 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:37,069 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:58:37,452 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:58:37,812 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:58:38,420 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:38,741 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:39,109 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:39,404 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:40,600 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:41,059 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:41,347 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:41,675 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:42,189 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:42,570 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:42,907 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:43,470 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:43,749 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:44,317 INFO L93 Difference]: Finished difference Result 3517 states and 4366 transitions. [2020-08-22 02:58:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 02:58:44,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-22 02:58:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:44,332 INFO L225 Difference]: With dead ends: 3517 [2020-08-22 02:58:44,332 INFO L226 Difference]: Without dead ends: 2083 [2020-08-22 02:58:44,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 02:58:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-08-22 02:58:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1905. [2020-08-22 02:58:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-08-22 02:58:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2254 transitions. [2020-08-22 02:58:44,784 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2254 transitions. Word has length 172 [2020-08-22 02:58:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:44,785 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2254 transitions. [2020-08-22 02:58:44,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:58:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2254 transitions. [2020-08-22 02:58:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-22 02:58:44,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:44,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:44,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:58:44,796 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 41456611, now seen corresponding path program 1 times [2020-08-22 02:58:44,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:44,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86102491] [2020-08-22 02:58:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,102 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:58:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:58:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 02:58:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:58:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 02:58:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 02:58:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 02:58:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-22 02:58:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-22 02:58:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 79 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-08-22 02:58:45,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86102491] [2020-08-22 02:58:45,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:45,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:58:45,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159476282] [2020-08-22 02:58:45,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:58:45,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:45,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:58:45,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:58:45,635 INFO L87 Difference]: Start difference. First operand 1905 states and 2254 transitions. Second operand 15 states. [2020-08-22 02:58:46,994 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:47,264 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:47,525 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:47,772 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:48,795 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:50,718 INFO L93 Difference]: Finished difference Result 5225 states and 6429 transitions. [2020-08-22 02:58:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:58:50,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 307 [2020-08-22 02:58:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:50,740 INFO L225 Difference]: With dead ends: 5225 [2020-08-22 02:58:50,740 INFO L226 Difference]: Without dead ends: 3038 [2020-08-22 02:58:50,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-22 02:58:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-08-22 02:58:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2622. [2020-08-22 02:58:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-08-22 02:58:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3181 transitions. [2020-08-22 02:58:51,352 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3181 transitions. Word has length 307 [2020-08-22 02:58:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:51,353 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3181 transitions. [2020-08-22 02:58:51,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 02:58:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3181 transitions. [2020-08-22 02:58:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-22 02:58:51,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:51,365 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:51,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:58:51,365 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:51,365 INFO L82 PathProgramCache]: Analyzing trace with hash -835338370, now seen corresponding path program 1 times [2020-08-22 02:58:51,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:51,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863038405] [2020-08-22 02:58:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,677 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:58:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:58:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:58:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 02:58:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:58:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 02:58:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 02:58:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 02:58:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-22 02:58:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 02:58:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-08-22 02:58:52,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863038405] [2020-08-22 02:58:52,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:52,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:58:52,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779281667] [2020-08-22 02:58:52,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:58:52,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:52,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:58:52,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:58:52,090 INFO L87 Difference]: Start difference. First operand 2622 states and 3181 transitions. Second operand 16 states. [2020-08-22 02:58:52,611 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:52,918 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:53,175 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:53,428 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:54,147 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:55,195 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:55,451 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:55,878 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:56,476 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:57,439 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:57,689 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:58,701 INFO L93 Difference]: Finished difference Result 5029 states and 6185 transitions. [2020-08-22 02:58:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:58:58,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-08-22 02:58:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:58,719 INFO L225 Difference]: With dead ends: 5029 [2020-08-22 02:58:58,719 INFO L226 Difference]: Without dead ends: 2630 [2020-08-22 02:58:58,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 02:58:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states.