/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:57:10,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:57:10,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:57:10,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:57:10,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:57:10,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:57:10,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:57:10,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:57:10,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:57:10,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:57:10,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:57:10,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:57:10,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:57:10,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:57:10,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:57:10,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:57:10,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:57:10,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:57:10,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:57:10,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:57:10,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:57:10,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:57:10,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:57:10,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:57:10,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:57:10,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:57:10,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:57:10,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:57:10,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:57:10,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:57:10,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:57:10,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:57:10,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:57:10,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:57:10,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:57:10,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:57:10,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:57:10,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:57:10,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:57:10,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:57:10,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:57:10,474 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 [2020-08-18 11:57:10,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:57:10,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:57:10,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:57:10,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:57:10,520 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:57:10,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:57:10,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:57:10,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:57:10,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:57:10,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:57:10,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:57:10,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:57:10,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:57:10,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:57:10,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:57:10,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:57:10,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:57:10,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:57:10,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:57:10,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:57:10,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:57:10,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:57:10,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:57:10,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:57:10,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:57:10,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:57:10,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:57:10,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:57:10,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:57:10,527 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:57:10,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:57:10,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:57:10,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:57:10,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:57:10,875 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:57:10,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-18 11:57:10,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b52291c/4af2642f2ecf41acbb320e5dab41fc94/FLAG6cd3f903c [2020-08-18 11:57:11,520 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:57:11,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-18 11:57:11,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b52291c/4af2642f2ecf41acbb320e5dab41fc94/FLAG6cd3f903c [2020-08-18 11:57:11,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b52291c/4af2642f2ecf41acbb320e5dab41fc94 [2020-08-18 11:57:11,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:57:11,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:57:11,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:11,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:57:11,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:57:11,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:11" (1/1) ... [2020-08-18 11:57:11,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9f27fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:11, skipping insertion in model container [2020-08-18 11:57:11,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:11" (1/1) ... [2020-08-18 11:57:11,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:57:11,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:57:12,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:12,259 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:57:12,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:12,416 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:57:12,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12 WrapperNode [2020-08-18 11:57:12,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:12,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:57:12,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:57:12,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:57:12,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (1/1) ... [2020-08-18 11:57:12,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:57:12,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:57:12,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:57:12,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:57:12,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (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 [2020-08-18 11:57:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:57:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:57:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:57:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:57:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:12,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:57:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:57:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:57:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:57:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:57:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:57:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 11:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:57:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:57:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:57:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:57:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:57:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:57:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 11:57:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 11:57:12,610 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:57:12,610 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:57:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:57:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:57:12,613 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:57:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:57:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:57:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:57:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:57:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:57:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:57:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 11:57:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:57:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:57:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:57:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:57:15,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:57:15,841 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:57:15,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:15 BoogieIcfgContainer [2020-08-18 11:57:15,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:57:15,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:57:15,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:57:15,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:57:15,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:57:11" (1/3) ... [2020-08-18 11:57:15,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6affa3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:15, skipping insertion in model container [2020-08-18 11:57:15,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:12" (2/3) ... [2020-08-18 11:57:15,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6affa3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:15, skipping insertion in model container [2020-08-18 11:57:15,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:15" (3/3) ... [2020-08-18 11:57:15,860 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-08-18 11:57:15,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:57:15,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:57:15,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:57:15,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:57:15,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:57:15,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:57:15,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:57:15,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:57:15,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:57:15,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:57:15,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:57:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-18 11:57:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 11:57:15,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:15,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:15,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:15,965 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-08-18 11:57:15,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:15,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431094288] [2020-08-18 11:57:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,697 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:57:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:57:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:16,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431094288] [2020-08-18 11:57:16,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:16,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:57:16,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901201091] [2020-08-18 11:57:16,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:57:16,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:16,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:57:16,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:57:16,831 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-18 11:57:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:18,222 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-08-18 11:57:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:57:18,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 11:57:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:18,240 INFO L225 Difference]: With dead ends: 328 [2020-08-18 11:57:18,240 INFO L226 Difference]: Without dead ends: 181 [2020-08-18 11:57:18,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:57:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-18 11:57:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-18 11:57:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 11:57:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-08-18 11:57:18,358 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-08-18 11:57:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:18,358 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-08-18 11:57:18,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:57:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-08-18 11:57:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:57:18,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:18,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:18,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:57:18,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-08-18 11:57:18,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:18,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222796202] [2020-08-18 11:57:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,792 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:57:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:18,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222796202] [2020-08-18 11:57:18,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:18,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:57:18,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282922174] [2020-08-18 11:57:18,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:57:18,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:18,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:57:18,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:57:18,846 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-08-18 11:57:19,365 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:20,377 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-08-18 11:57:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:57:20,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 11:57:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:20,388 INFO L225 Difference]: With dead ends: 273 [2020-08-18 11:57:20,388 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 11:57:20,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:57:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 11:57:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-18 11:57:20,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 11:57:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-18 11:57:20,438 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-18 11:57:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:20,438 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-18 11:57:20,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:57:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-18 11:57:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 11:57:20,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:20,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:20,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:57:20,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:20,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-08-18 11:57:20,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:20,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042005481] [2020-08-18 11:57:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,747 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:57:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:57:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:20,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042005481] [2020-08-18 11:57:20,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:20,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:57:20,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635099396] [2020-08-18 11:57:20,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:57:20,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:20,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:57:20,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:57:20,854 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-08-18 11:57:21,308 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:21,643 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:21,889 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:22,137 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:23,499 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-08-18 11:57:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:57:23,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 11:57:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:23,505 INFO L225 Difference]: With dead ends: 282 [2020-08-18 11:57:23,505 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 11:57:23,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:57:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 11:57:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-18 11:57:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 11:57:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-08-18 11:57:23,572 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-08-18 11:57:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:23,572 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-08-18 11:57:23,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:57:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-08-18 11:57:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 11:57:23,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:23,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:23,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:57:23,575 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-08-18 11:57:23,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:23,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464535760] [2020-08-18 11:57:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,901 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:57:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:24,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 11:57:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:57:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:24,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464535760] [2020-08-18 11:57:24,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:24,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:57:24,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020018330] [2020-08-18 11:57:24,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:57:24,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:24,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:57:24,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:57:24,028 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-08-18 11:57:24,540 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:25,771 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:26,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:26,601 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-08-18 11:57:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:57:26,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-18 11:57:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:26,605 INFO L225 Difference]: With dead ends: 382 [2020-08-18 11:57:26,605 INFO L226 Difference]: Without dead ends: 271 [2020-08-18 11:57:26,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:57:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-18 11:57:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-08-18 11:57:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-18 11:57:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-08-18 11:57:26,688 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-08-18 11:57:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:26,689 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-08-18 11:57:26,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:57:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-08-18 11:57:26,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:57:26,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:26,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:26,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:57:26,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-08-18 11:57:26,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:26,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576428305] [2020-08-18 11:57:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,022 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:57:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 11:57:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 11:57:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:27,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576428305] [2020-08-18 11:57:27,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:27,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:57:27,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789060914] [2020-08-18 11:57:27,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:57:27,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:27,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:57:27,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:57:27,159 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-08-18 11:57:27,758 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:29,087 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:29,379 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:29,615 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:29,876 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:31,271 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-08-18 11:57:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 11:57:31,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 11:57:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:31,277 INFO L225 Difference]: With dead ends: 666 [2020-08-18 11:57:31,277 INFO L226 Difference]: Without dead ends: 469 [2020-08-18 11:57:31,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 11:57:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-18 11:57:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-08-18 11:57:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-18 11:57:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-08-18 11:57:31,357 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-08-18 11:57:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:31,358 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-08-18 11:57:31,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:57:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-08-18 11:57:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 11:57:31,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:31,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:31,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:57:31,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-08-18 11:57:31,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:31,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260276226] [2020-08-18 11:57:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,666 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 11:57:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 11:57:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:31,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260276226] [2020-08-18 11:57:31,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:31,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:57:31,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231458063] [2020-08-18 11:57:31,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:57:31,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:31,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:57:31,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:57:31,797 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-08-18 11:57:32,486 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:33,692 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:33,947 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:34,200 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:34,487 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:35,679 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-08-18 11:57:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 11:57:35,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-18 11:57:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:35,684 INFO L225 Difference]: With dead ends: 874 [2020-08-18 11:57:35,684 INFO L226 Difference]: Without dead ends: 504 [2020-08-18 11:57:35,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 11:57:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-18 11:57:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-08-18 11:57:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-18 11:57:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-08-18 11:57:35,756 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-08-18 11:57:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:35,756 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-08-18 11:57:35,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:57:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-08-18 11:57:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 11:57:35,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:35,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:35,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:57:35,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-08-18 11:57:35,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:35,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907326739] [2020-08-18 11:57:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:35,990 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 11:57:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 11:57:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:36,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907326739] [2020-08-18 11:57:36,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:36,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:57:36,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97798789] [2020-08-18 11:57:36,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:57:36,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:36,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:57:36,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:57:36,144 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-08-18 11:57:37,235 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:37,491 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 11:57:37,786 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:38,034 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:39,244 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-08-18 11:57:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:57:39,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 11:57:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:39,248 INFO L225 Difference]: With dead ends: 877 [2020-08-18 11:57:39,248 INFO L226 Difference]: Without dead ends: 508 [2020-08-18 11:57:39,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:57:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-18 11:57:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-08-18 11:57:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-18 11:57:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-08-18 11:57:39,320 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-08-18 11:57:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:39,320 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-08-18 11:57:39,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:57:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-08-18 11:57:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 11:57:39,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:39,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:39,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:57:39,323 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-08-18 11:57:39,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:39,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808250324] [2020-08-18 11:57:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,635 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:39,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 11:57:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 11:57:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:39,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808250324] [2020-08-18 11:57:39,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:39,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:57:39,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586916614] [2020-08-18 11:57:39,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:57:39,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:39,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:57:39,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:57:39,826 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-08-18 11:57:40,941 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:41,173 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:41,395 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:42,048 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:42,311 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:42,575 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:43,927 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-08-18 11:57:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:57:43,927 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 11:57:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:43,931 INFO L225 Difference]: With dead ends: 901 [2020-08-18 11:57:43,931 INFO L226 Difference]: Without dead ends: 522 [2020-08-18 11:57:43,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:57:43,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-18 11:57:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-08-18 11:57:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-18 11:57:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-08-18 11:57:44,004 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-08-18 11:57:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:44,004 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-08-18 11:57:44,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:57:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-08-18 11:57:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 11:57:44,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:44,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:44,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:57:44,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:44,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-08-18 11:57:44,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:44,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191855173] [2020-08-18 11:57:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,264 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 11:57:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 11:57:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:44,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191855173] [2020-08-18 11:57:44,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:44,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:57:44,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536212733] [2020-08-18 11:57:44,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:57:44,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:44,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:57:44,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:57:44,505 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-08-18 11:57:45,328 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:46,090 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:48,693 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-08-18 11:57:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 11:57:48,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 11:57:48,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:48,699 INFO L225 Difference]: With dead ends: 1240 [2020-08-18 11:57:48,699 INFO L226 Difference]: Without dead ends: 853 [2020-08-18 11:57:48,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 11:57:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-18 11:57:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-08-18 11:57:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-08-18 11:57:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-08-18 11:57:48,799 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-08-18 11:57:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:48,799 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-08-18 11:57:48,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:57:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-08-18 11:57:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 11:57:48,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:48,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:48,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:57:48,802 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:48,802 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-08-18 11:57:48,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:48,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981590035] [2020-08-18 11:57:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,054 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:57:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 11:57:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 11:57:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:49,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981590035] [2020-08-18 11:57:49,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:49,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:57:49,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077083074] [2020-08-18 11:57:49,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:57:49,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:49,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:57:49,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:57:49,189 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-08-18 11:57:49,789 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:52,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:52,336 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-08-18 11:57:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 11:57:52,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-18 11:57:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:52,346 INFO L225 Difference]: With dead ends: 1414 [2020-08-18 11:57:52,346 INFO L226 Difference]: Without dead ends: 1411 [2020-08-18 11:57:52,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-18 11:57:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-08-18 11:57:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-08-18 11:57:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-08-18 11:57:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-08-18 11:57:52,624 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-08-18 11:57:52,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:52,625 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-08-18 11:57:52,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:57:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-08-18 11:57:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 11:57:52,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:52,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:52,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:57:52,631 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:52,632 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-08-18 11:57:52,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:52,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065438598] [2020-08-18 11:57:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,923 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:52,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:57:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 11:57:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 11:57:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 11:57:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 11:57:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 11:57:53,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065438598] [2020-08-18 11:57:53,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:57:53,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 11:57:53,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617252162] [2020-08-18 11:57:53,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:57:53,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:53,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:57:53,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:57:53,159 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-08-18 11:57:53,728 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:53,957 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:54,179 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:55,095 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:57,050 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-08-18 11:57:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 11:57:57,050 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-18 11:57:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:57,058 INFO L225 Difference]: With dead ends: 2164 [2020-08-18 11:57:57,058 INFO L226 Difference]: Without dead ends: 1113 [2020-08-18 11:57:57,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-18 11:57:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-18 11:57:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-18 11:57:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-18 11:57:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-08-18 11:57:57,269 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-08-18 11:57:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:57,270 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-08-18 11:57:57,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:57:57,270 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-08-18 11:57:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-18 11:57:57,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:57,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:57,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:57:57,275 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:57,276 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-08-18 11:57:57,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:57,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229402383] [2020-08-18 11:57:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,590 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:57,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:57:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 11:57:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 11:57:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 11:57:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 11:57:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 11:57:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 11:57:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 11:57:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-18 11:57:57,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229402383] [2020-08-18 11:57:57,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:57:57,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 11:57:57,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147161052] [2020-08-18 11:57:57,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 11:57:57,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:57,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 11:57:57,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:57:57,949 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-08-18 11:57:58,797 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:59,133 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:57:59,411 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:57:59,670 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:58:00,342 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:58:01,496 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:01,863 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:03,185 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:03,457 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:03,734 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:04,003 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:04,242 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:04,504 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:04,802 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:05,064 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:58:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:06,114 INFO L93 Difference]: Finished difference Result 1901 states and 2314 transitions. [2020-08-18 11:58:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 11:58:06,115 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-08-18 11:58:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:06,116 INFO L225 Difference]: With dead ends: 1901 [2020-08-18 11:58:06,116 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:58:06,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 11:58:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:58:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:58:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:58:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:58:06,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-08-18 11:58:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:06,125 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:58:06,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 11:58:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:58:06,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:58:06,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 11:58:06,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.