/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:53:06,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:53:06,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:53:06,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:53:06,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:53:06,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:53:06,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:53:06,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:53:06,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:53:06,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:53:06,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:53:06,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:53:06,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:53:06,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:53:06,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:53:06,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:53:06,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:53:06,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:53:06,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:53:06,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:53:06,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:53:06,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:53:06,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:53:06,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:53:06,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:53:06,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:53:06,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:53:06,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:53:06,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:53:06,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:53:06,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:53:06,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:53:06,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:53:06,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:53:06,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:53:06,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:53:06,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:53:06,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:53:06,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:53:06,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:53:06,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:53:06,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:53:06,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:53:06,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:53:06,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:53:06,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:53:06,658 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:53:06,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:53:06,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:53:06,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:53:06,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:53:06,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:53:06,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:53:06,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:53:06,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:53:06,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:53:06,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:53:06,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:53:06,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:53:06,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:53:06,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:53:06,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:53:06,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:53:06,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:53:06,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:53:06,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:53:06,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:53:06,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:53:06,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:53:06,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:53:06,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:53:06,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:53:06,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:53:06,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:53:06,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:53:06,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:53:06,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:53:06,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2020-08-19 01:53:07,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71de56869/b373a1177cf141009464b2d9c7a5ae3e/FLAGd643416c2 [2020-08-19 01:53:07,500 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:53:07,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2020-08-19 01:53:07,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71de56869/b373a1177cf141009464b2d9c7a5ae3e/FLAGd643416c2 [2020-08-19 01:53:07,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71de56869/b373a1177cf141009464b2d9c7a5ae3e [2020-08-19 01:53:07,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:53:07,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:53:07,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:53:07,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:53:07,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:53:07,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:53:07" (1/1) ... [2020-08-19 01:53:07,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:07, skipping insertion in model container [2020-08-19 01:53:07,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:53:07" (1/1) ... [2020-08-19 01:53:07,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:53:07,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:53:08,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:53:08,425 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:53:08,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:53:08,574 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:53:08,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08 WrapperNode [2020-08-19 01:53:08,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:53:08,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:53:08,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:53:08,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:53:08,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... [2020-08-19 01:53:08,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:53:08,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:53:08,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:53:08,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:53:08,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:53:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:53:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:53:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:53:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:53:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:53:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:53:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:53:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:53:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:53:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:53:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:53:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:53:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:53:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:53:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:53:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:53:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:53:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:53:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:53:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:53:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:53:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:53:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:53:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:53:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:53:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:53:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:53:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:53:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:53:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:53:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:53:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:53:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:53:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:53:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:53:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:53:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:53:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:53:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:53:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:53:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:53:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:53:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:53:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:53:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:53:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:53:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:53:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:53:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:53:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:53:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:53:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:53:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:53:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:53:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:53:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:53:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:53:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:53:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:53:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:53:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:53:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:53:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:53:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:53:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:53:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:53:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:53:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:53:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:53:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:53:09,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:53:09,790 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:53:09,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:09 BoogieIcfgContainer [2020-08-19 01:53:09,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:53:09,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:53:09,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:53:09,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:53:09,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:53:07" (1/3) ... [2020-08-19 01:53:09,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fad98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:09, skipping insertion in model container [2020-08-19 01:53:09,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:08" (2/3) ... [2020-08-19 01:53:09,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fad98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:09, skipping insertion in model container [2020-08-19 01:53:09,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:09" (3/3) ... [2020-08-19 01:53:09,808 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2020-08-19 01:53:09,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:53:09,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:53:09,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:53:09,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:53:09,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:53:09,854 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:53:09,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:53:09,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:53:09,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:53:09,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:53:09,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:53:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-08-19 01:53:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:53:09,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:09,889 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] [2020-08-19 01:53:09,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash -878720759, now seen corresponding path program 1 times [2020-08-19 01:53:09,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:09,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887797214] [2020-08-19 01:53:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,563 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:53:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:10,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887797214] [2020-08-19 01:53:10,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:10,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:53:10,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594356873] [2020-08-19 01:53:10,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:53:10,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:53:10,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:10,702 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 4 states. [2020-08-19 01:53:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:11,778 INFO L93 Difference]: Finished difference Result 318 states and 410 transitions. [2020-08-19 01:53:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:53:11,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:53:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:11,795 INFO L225 Difference]: With dead ends: 318 [2020-08-19 01:53:11,795 INFO L226 Difference]: Without dead ends: 175 [2020-08-19 01:53:11,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-19 01:53:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2020-08-19 01:53:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 01:53:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-08-19 01:53:11,902 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 59 [2020-08-19 01:53:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:11,903 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-08-19 01:53:11,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:53:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-08-19 01:53:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:53:11,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:11,915 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] [2020-08-19 01:53:11,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:53:11,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:11,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1980606616, now seen corresponding path program 1 times [2020-08-19 01:53:11,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:11,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168371760] [2020-08-19 01:53:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,272 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:53:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:53:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:53:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:12,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168371760] [2020-08-19 01:53:12,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:12,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:53:12,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805057740] [2020-08-19 01:53:12,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:53:12,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:12,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:53:12,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:53:12,329 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 5 states. [2020-08-19 01:53:12,784 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:13,678 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2020-08-19 01:53:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:53:13,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:53:13,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:13,682 INFO L225 Difference]: With dead ends: 257 [2020-08-19 01:53:13,682 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 01:53:13,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 01:53:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 135. [2020-08-19 01:53:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-19 01:53:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2020-08-19 01:53:13,767 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 60 [2020-08-19 01:53:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:13,767 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2020-08-19 01:53:13,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:53:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2020-08-19 01:53:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 01:53:13,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:13,771 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] [2020-08-19 01:53:13,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:53:13,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1839911150, now seen corresponding path program 1 times [2020-08-19 01:53:13,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:13,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302785033] [2020-08-19 01:53:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,157 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:53:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:53:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:14,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302785033] [2020-08-19 01:53:14,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:14,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:14,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742745983] [2020-08-19 01:53:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:14,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:14,272 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 9 states. [2020-08-19 01:53:14,665 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:15,001 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:15,250 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:15,478 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:16,309 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:17,951 INFO L93 Difference]: Finished difference Result 450 states and 558 transitions. [2020-08-19 01:53:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:53:17,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 01:53:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:17,958 INFO L225 Difference]: With dead ends: 450 [2020-08-19 01:53:17,958 INFO L226 Difference]: Without dead ends: 343 [2020-08-19 01:53:17,959 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 [2020-08-19 01:53:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-19 01:53:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 290. [2020-08-19 01:53:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-19 01:53:18,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2020-08-19 01:53:18,035 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 64 [2020-08-19 01:53:18,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:18,035 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2020-08-19 01:53:18,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2020-08-19 01:53:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:53:18,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:18,038 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] [2020-08-19 01:53:18,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:53:18,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 423224560, now seen corresponding path program 1 times [2020-08-19 01:53:18,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:18,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669913599] [2020-08-19 01:53:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,393 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:53:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:53:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:53:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:53:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669913599] [2020-08-19 01:53:18,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:18,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:18,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969996947] [2020-08-19 01:53:18,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:18,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:18,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:18,489 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 9 states. [2020-08-19 01:53:18,911 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:19,538 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:20,365 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:20,656 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:20,970 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:21,217 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:21,894 INFO L93 Difference]: Finished difference Result 739 states and 964 transitions. [2020-08-19 01:53:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:53:21,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 01:53:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:21,901 INFO L225 Difference]: With dead ends: 739 [2020-08-19 01:53:21,901 INFO L226 Difference]: Without dead ends: 477 [2020-08-19 01:53:21,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:53:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-08-19 01:53:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 413. [2020-08-19 01:53:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-08-19 01:53:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 499 transitions. [2020-08-19 01:53:21,999 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 499 transitions. Word has length 70 [2020-08-19 01:53:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:21,999 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 499 transitions. [2020-08-19 01:53:22,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 499 transitions. [2020-08-19 01:53:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:53:22,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:22,002 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] [2020-08-19 01:53:22,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:53:22,002 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:22,003 INFO L82 PathProgramCache]: Analyzing trace with hash -742421187, now seen corresponding path program 1 times [2020-08-19 01:53:22,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:22,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034186350] [2020-08-19 01:53:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,238 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:53:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:53:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:53:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:22,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034186350] [2020-08-19 01:53:22,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:22,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:22,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420253039] [2020-08-19 01:53:22,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:22,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:22,456 INFO L87 Difference]: Start difference. First operand 413 states and 499 transitions. Second operand 9 states. [2020-08-19 01:53:23,527 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:23,774 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:24,025 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,288 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:25,000 INFO L93 Difference]: Finished difference Result 884 states and 1127 transitions. [2020-08-19 01:53:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:53:25,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 01:53:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:25,006 INFO L225 Difference]: With dead ends: 884 [2020-08-19 01:53:25,006 INFO L226 Difference]: Without dead ends: 499 [2020-08-19 01:53:25,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:53:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-19 01:53:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 426. [2020-08-19 01:53:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-19 01:53:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2020-08-19 01:53:25,086 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 92 [2020-08-19 01:53:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:25,087 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2020-08-19 01:53:25,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:25,087 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2020-08-19 01:53:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:53:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:25,089 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] [2020-08-19 01:53:25,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:53:25,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -40821313, now seen corresponding path program 1 times [2020-08-19 01:53:25,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:25,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126282089] [2020-08-19 01:53:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,350 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:53:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:53:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:53:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:25,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126282089] [2020-08-19 01:53:25,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:25,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:53:25,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805717592] [2020-08-19 01:53:25,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:53:25,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:25,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:53:25,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:53:25,480 INFO L87 Difference]: Start difference. First operand 426 states and 513 transitions. Second operand 11 states. [2020-08-19 01:53:26,127 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:26,527 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:26,820 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:27,527 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:27,797 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:28,045 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:28,872 INFO L93 Difference]: Finished difference Result 911 states and 1176 transitions. [2020-08-19 01:53:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:53:28,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-19 01:53:28,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:28,877 INFO L225 Difference]: With dead ends: 911 [2020-08-19 01:53:28,877 INFO L226 Difference]: Without dead ends: 513 [2020-08-19 01:53:28,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:53:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-08-19 01:53:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 434. [2020-08-19 01:53:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-19 01:53:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-19 01:53:28,951 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 92 [2020-08-19 01:53:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:28,951 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-19 01:53:28,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:53:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-19 01:53:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:53:28,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:28,953 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] [2020-08-19 01:53:28,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:53:28,954 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1684659584, now seen corresponding path program 1 times [2020-08-19 01:53:28,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:28,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852854848] [2020-08-19 01:53:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,277 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:53:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:53:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:53:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:29,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852854848] [2020-08-19 01:53:29,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:29,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:53:29,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470031738] [2020-08-19 01:53:29,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:53:29,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:29,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:53:29,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:29,435 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 7 states. [2020-08-19 01:53:29,890 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:30,500 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:32,357 INFO L93 Difference]: Finished difference Result 1379 states and 1792 transitions. [2020-08-19 01:53:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:53:32,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-19 01:53:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:32,367 INFO L225 Difference]: With dead ends: 1379 [2020-08-19 01:53:32,368 INFO L226 Difference]: Without dead ends: 973 [2020-08-19 01:53:32,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:53:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-08-19 01:53:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 899. [2020-08-19 01:53:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-08-19 01:53:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1095 transitions. [2020-08-19 01:53:32,505 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1095 transitions. Word has length 92 [2020-08-19 01:53:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:32,505 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1095 transitions. [2020-08-19 01:53:32,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:53:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1095 transitions. [2020-08-19 01:53:32,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 01:53:32,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:32,508 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] [2020-08-19 01:53:32,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:53:32,508 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:32,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1838654426, now seen corresponding path program 1 times [2020-08-19 01:53:32,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:32,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476307471] [2020-08-19 01:53:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,841 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:53:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 01:53:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:53:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:32,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476307471] [2020-08-19 01:53:32,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:32,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:53:32,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937988853] [2020-08-19 01:53:32,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:53:32,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:32,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:53:32,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:53:32,997 INFO L87 Difference]: Start difference. First operand 899 states and 1095 transitions. Second operand 12 states. [2020-08-19 01:53:33,422 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:34,044 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:34,722 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:35,033 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:35,274 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:35,538 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:35,801 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:37,726 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:37,993 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:38,543 INFO L93 Difference]: Finished difference Result 2547 states and 3312 transitions. [2020-08-19 01:53:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:53:38,548 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 01:53:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:38,561 INFO L225 Difference]: With dead ends: 2547 [2020-08-19 01:53:38,561 INFO L226 Difference]: Without dead ends: 1864 [2020-08-19 01:53:38,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:53:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2020-08-19 01:53:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1570. [2020-08-19 01:53:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-08-19 01:53:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1900 transitions. [2020-08-19 01:53:38,939 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1900 transitions. Word has length 96 [2020-08-19 01:53:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:38,940 INFO L479 AbstractCegarLoop]: Abstraction has 1570 states and 1900 transitions. [2020-08-19 01:53:38,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:53:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1900 transitions. [2020-08-19 01:53:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 01:53:38,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:38,951 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] [2020-08-19 01:53:38,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:53:38,951 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:38,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1624055928, now seen corresponding path program 1 times [2020-08-19 01:53:38,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:38,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231723196] [2020-08-19 01:53:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,251 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:53:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:53:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:53:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:53:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:53:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-19 01:53:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:53:39,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231723196] [2020-08-19 01:53:39,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:39,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:53:39,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231778671] [2020-08-19 01:53:39,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:53:39,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:39,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:53:39,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:39,529 INFO L87 Difference]: Start difference. First operand 1570 states and 1900 transitions. Second operand 16 states. [2020-08-19 01:53:40,078 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:40,383 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:53:40,636 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:40,880 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:41,476 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:41,766 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:42,130 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:42,396 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:43,374 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:43,934 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:44,226 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:44,547 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:45,094 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:45,467 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:45,812 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:46,391 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:46,664 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:47,231 INFO L93 Difference]: Finished difference Result 3381 states and 4222 transitions. [2020-08-19 01:53:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 01:53:47,232 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-19 01:53:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:47,244 INFO L225 Difference]: With dead ends: 3381 [2020-08-19 01:53:47,244 INFO L226 Difference]: Without dead ends: 2015 [2020-08-19 01:53:47,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 01:53:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2020-08-19 01:53:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1837. [2020-08-19 01:53:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1837 states. [2020-08-19 01:53:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2182 transitions. [2020-08-19 01:53:47,657 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2182 transitions. Word has length 157 [2020-08-19 01:53:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:47,658 INFO L479 AbstractCegarLoop]: Abstraction has 1837 states and 2182 transitions. [2020-08-19 01:53:47,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:53:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2182 transitions. [2020-08-19 01:53:47,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-19 01:53:47,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:47,668 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:47,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:53:47,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 510843146, now seen corresponding path program 1 times [2020-08-19 01:53:47,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:47,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727776900] [2020-08-19 01:53:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,034 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:53:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:53:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 01:53:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:53:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-19 01:53:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 01:53:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 01:53:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 01:53:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-19 01:53:48,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727776900] [2020-08-19 01:53:48,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:48,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:53:48,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535244301] [2020-08-19 01:53:48,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:53:48,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:53:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:53:48,626 INFO L87 Difference]: Start difference. First operand 1837 states and 2182 transitions. Second operand 15 states. [2020-08-19 01:53:50,207 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:50,425 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:50,678 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:50,926 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:51,180 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:52,014 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:52,523 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 01:53:52,964 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 01:53:53,316 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:55,783 INFO L93 Difference]: Finished difference Result 5059 states and 6227 transitions. [2020-08-19 01:53:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:53:55,784 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-19 01:53:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:55,802 INFO L225 Difference]: With dead ends: 5059 [2020-08-19 01:53:55,802 INFO L226 Difference]: Without dead ends: 3055 [2020-08-19 01:53:55,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 01:53:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2020-08-19 01:53:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2617. [2020-08-19 01:53:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2617 states. [2020-08-19 01:53:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3143 transitions. [2020-08-19 01:53:56,357 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3143 transitions. Word has length 273 [2020-08-19 01:53:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:56,358 INFO L479 AbstractCegarLoop]: Abstraction has 2617 states and 3143 transitions. [2020-08-19 01:53:56,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:53:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3143 transitions. [2020-08-19 01:53:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-19 01:53:56,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:56,371 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:56,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:53:56,372 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash 443497263, now seen corresponding path program 1 times [2020-08-19 01:53:56,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:56,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173426693] [2020-08-19 01:53:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,696 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:53:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:53:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:53:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 01:53:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:53:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-19 01:53:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-19 01:53:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 01:53:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-19 01:53:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-08-19 01:53:57,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173426693] [2020-08-19 01:53:57,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:57,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:53:57,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929661017] [2020-08-19 01:53:57,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:53:57,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:53:57,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:57,157 INFO L87 Difference]: Start difference. First operand 2617 states and 3143 transitions. Second operand 16 states. [2020-08-19 01:53:57,718 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:58,022 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 01:53:58,275 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:58,559 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:59,165 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:00,098 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:54:00,396 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:00,634 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:01,113 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:01,949 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:02,185 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:02,976 INFO L93 Difference]: Finished difference Result 5016 states and 6107 transitions. [2020-08-19 01:54:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:54:02,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 279 [2020-08-19 01:54:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:02,992 INFO L225 Difference]: With dead ends: 5016 [2020-08-19 01:54:02,992 INFO L226 Difference]: Without dead ends: 2625 [2020-08-19 01:54:02,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 01:54:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-08-19 01:54:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2552. [2020-08-19 01:54:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2552 states. [2020-08-19 01:54:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3036 transitions. [2020-08-19 01:54:03,451 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3036 transitions. Word has length 279 [2020-08-19 01:54:03,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:03,454 INFO L479 AbstractCegarLoop]: Abstraction has 2552 states and 3036 transitions. [2020-08-19 01:54:03,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:54:03,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3036 transitions. [2020-08-19 01:54:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-19 01:54:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:03,468 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:03,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:54:03,468 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:03,468 INFO L82 PathProgramCache]: Analyzing trace with hash 891649996, now seen corresponding path program 1 times [2020-08-19 01:54:03,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:03,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550664578] [2020-08-19 01:54:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat