/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:02:05,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:02:05,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:02:05,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:02:05,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:02:05,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:02:05,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:02:05,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:02:05,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:02:05,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:02:05,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:02:05,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:02:05,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:02:05,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:02:05,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:02:05,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:02:05,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:02:05,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:02:05,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:02:05,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:02:05,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:02:05,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:02:05,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:02:05,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:02:05,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:02:05,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:02:05,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:02:05,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:02:05,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:02:05,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:02:05,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:02:05,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:02:05,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:02:05,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:02:05,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:02:05,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:02:05,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:02:05,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:02:05,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:02:05,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:02:05,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:02:05,500 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 21:02:05,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:02:05,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:02:05,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:02:05,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:02:05,524 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:02:05,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:02:05,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:02:05,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:02:05,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:02:05,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:02:05,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:02:05,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:02:05,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:02:05,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:02:05,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:02:05,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:02:05,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:02:05,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:02:05,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:02:05,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:02:05,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:02:05,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:02:05,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:02:05,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:02:05,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:02:05,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:02:05,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:02:05,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:02:05,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:02:05,529 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:02:05,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:02:05,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:02:05,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:02:05,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:02:05,870 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:02:05,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-18 21:02:05,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9c943345/8dbfbfa387d6490386b4ea6e6142c63a/FLAG1ff271ce1 [2020-08-18 21:02:06,458 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:02:06,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-18 21:02:06,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9c943345/8dbfbfa387d6490386b4ea6e6142c63a/FLAG1ff271ce1 [2020-08-18 21:02:06,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9c943345/8dbfbfa387d6490386b4ea6e6142c63a [2020-08-18 21:02:06,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:02:06,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:02:06,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:02:06,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:02:06,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:02:06,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:02:06" (1/1) ... [2020-08-18 21:02:06,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:06, skipping insertion in model container [2020-08-18 21:02:06,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:02:06" (1/1) ... [2020-08-18 21:02:06,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:02:06,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:02:07,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:02:07,355 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:02:07,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:02:07,479 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:02:07,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07 WrapperNode [2020-08-18 21:02:07,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:02:07,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:02:07,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:02:07,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:02:07,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (1/1) ... [2020-08-18 21:02:07,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:02:07,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:02:07,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:02:07,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:02:07,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (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 21:02:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:02:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:02:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:02:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:02:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:02:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:02:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:02:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:02:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:02:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:02:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:02:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:02:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:02:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:02:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:02:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:02:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:02:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:02:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:02:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:02:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:02:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:02:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:02:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:02:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:02:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 21:02:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:02:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:02:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:02:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:02:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:02:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:02:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:02:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:02:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 21:02:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:02:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:02:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:02:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:02:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:02:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:02:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:02:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:02:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:02:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:02:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:02:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:02:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:02:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:02:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:02:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:02:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:02:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:02:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:02:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:02:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:02:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 21:02:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:02:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:02:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:02:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:02:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 21:02:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:02:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:02:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:02:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:02:08,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:02:08,847 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:02:08,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:02:08 BoogieIcfgContainer [2020-08-18 21:02:08,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:02:08,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:02:08,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:02:08,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:02:08,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:02:06" (1/3) ... [2020-08-18 21:02:08,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6234ff36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:02:08, skipping insertion in model container [2020-08-18 21:02:08,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:07" (2/3) ... [2020-08-18 21:02:08,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6234ff36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:02:08, skipping insertion in model container [2020-08-18 21:02:08,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:02:08" (3/3) ... [2020-08-18 21:02:08,869 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2020-08-18 21:02:08,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:02:08,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:02:08,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:02:08,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:02:08,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:02:08,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:02:08,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:02:08,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:02:08,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:02:08,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:02:08,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:02:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2020-08-18 21:02:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 21:02:08,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:08,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:08,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:08,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2020-08-18 21:02:09,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:09,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237716144] [2020-08-18 21:02:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,644 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:09,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:02:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:02:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:09,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237716144] [2020-08-18 21:02:09,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:09,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:02:09,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790843678] [2020-08-18 21:02:09,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:02:09,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:02:09,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:02:09,832 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2020-08-18 21:02:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:11,279 INFO L93 Difference]: Finished difference Result 356 states and 457 transitions. [2020-08-18 21:02:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:02:11,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 21:02:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:11,316 INFO L225 Difference]: With dead ends: 356 [2020-08-18 21:02:11,316 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 21:02:11,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:02:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 21:02:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-08-18 21:02:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-18 21:02:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2020-08-18 21:02:11,472 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2020-08-18 21:02:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:11,472 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2020-08-18 21:02:11,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:02:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2020-08-18 21:02:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 21:02:11,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:11,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:11,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:02:11,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:11,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:11,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2020-08-18 21:02:11,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:11,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661653119] [2020-08-18 21:02:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,863 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:11,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:02:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:02:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:02:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:11,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661653119] [2020-08-18 21:02:11,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:11,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:02:11,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368454308] [2020-08-18 21:02:11,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:02:11,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:11,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:02:11,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:02:11,930 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 5 states. [2020-08-18 21:02:12,385 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:13,547 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2020-08-18 21:02:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:02:13,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 21:02:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:13,557 INFO L225 Difference]: With dead ends: 295 [2020-08-18 21:02:13,557 INFO L226 Difference]: Without dead ends: 185 [2020-08-18 21:02:13,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:02:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-18 21:02:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-08-18 21:02:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 21:02:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-18 21:02:13,613 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2020-08-18 21:02:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:13,614 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-18 21:02:13,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:02:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-18 21:02:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 21:02:13,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:13,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:13,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:02:13,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2020-08-18 21:02:13,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:13,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046870649] [2020-08-18 21:02:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,969 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:02:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:02:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:14,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046870649] [2020-08-18 21:02:14,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:14,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:14,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857067352] [2020-08-18 21:02:14,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:14,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:14,126 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-08-18 21:02:14,475 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:14,817 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:15,063 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:15,304 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:16,171 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:18,250 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2020-08-18 21:02:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:02:18,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 21:02:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:18,256 INFO L225 Difference]: With dead ends: 508 [2020-08-18 21:02:18,257 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 21:02:18,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 21:02:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 326. [2020-08-18 21:02:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-18 21:02:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2020-08-18 21:02:18,335 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2020-08-18 21:02:18,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:18,335 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2020-08-18 21:02:18,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2020-08-18 21:02:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 21:02:18,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:18,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:18,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:02:18,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:18,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2020-08-18 21:02:18,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:18,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759404952] [2020-08-18 21:02:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,686 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:02:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:02:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:02:18,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759404952] [2020-08-18 21:02:18,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:18,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:18,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727545875] [2020-08-18 21:02:18,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:18,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:18,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:18,789 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 9 states. [2020-08-18 21:02:19,171 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:19,845 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:20,741 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:21,066 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:21,372 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:21,638 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:22,558 INFO L93 Difference]: Finished difference Result 827 states and 1076 transitions. [2020-08-18 21:02:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:02:22,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 21:02:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:22,565 INFO L225 Difference]: With dead ends: 827 [2020-08-18 21:02:22,565 INFO L226 Difference]: Without dead ends: 529 [2020-08-18 21:02:22,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:02:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-18 21:02:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 465. [2020-08-18 21:02:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-08-18 21:02:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 561 transitions. [2020-08-18 21:02:22,662 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 561 transitions. Word has length 70 [2020-08-18 21:02:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:22,663 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 561 transitions. [2020-08-18 21:02:22,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 561 transitions. [2020-08-18 21:02:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 21:02:22,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:22,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:22,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:02:22,666 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2020-08-18 21:02:22,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:22,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146416983] [2020-08-18 21:02:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,908 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:23,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:23,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 21:02:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:02:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:23,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146416983] [2020-08-18 21:02:23,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:23,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:23,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997438064] [2020-08-18 21:02:23,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:23,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:23,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:23,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:23,118 INFO L87 Difference]: Start difference. First operand 465 states and 561 transitions. Second operand 9 states. [2020-08-18 21:02:24,171 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:24,427 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:24,663 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:24,905 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:25,861 INFO L93 Difference]: Finished difference Result 988 states and 1255 transitions. [2020-08-18 21:02:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:02:25,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-18 21:02:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:25,866 INFO L225 Difference]: With dead ends: 988 [2020-08-18 21:02:25,867 INFO L226 Difference]: Without dead ends: 551 [2020-08-18 21:02:25,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:02:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-08-18 21:02:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 478. [2020-08-18 21:02:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 21:02:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2020-08-18 21:02:25,968 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2020-08-18 21:02:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:25,969 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2020-08-18 21:02:25,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2020-08-18 21:02:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 21:02:25,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:25,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:25,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:02:25,972 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2020-08-18 21:02:25,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:25,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540810884] [2020-08-18 21:02:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,234 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 21:02:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:02:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:26,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540810884] [2020-08-18 21:02:26,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:26,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:02:26,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514216886] [2020-08-18 21:02:26,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:02:26,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:26,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:02:26,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:02:26,366 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 11 states. [2020-08-18 21:02:26,750 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:26,991 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:27,239 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:28,013 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:28,303 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:28,580 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:29,646 INFO L93 Difference]: Finished difference Result 1015 states and 1308 transitions. [2020-08-18 21:02:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:02:29,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-18 21:02:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:29,652 INFO L225 Difference]: With dead ends: 1015 [2020-08-18 21:02:29,653 INFO L226 Difference]: Without dead ends: 565 [2020-08-18 21:02:29,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:02:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-18 21:02:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 486. [2020-08-18 21:02:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-18 21:02:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-18 21:02:29,755 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2020-08-18 21:02:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:29,758 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-18 21:02:29,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:02:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-18 21:02:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 21:02:29,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:29,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:29,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:02:29,768 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2020-08-18 21:02:29,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:29,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308866231] [2020-08-18 21:02:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,059 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 21:02:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:02:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:30,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308866231] [2020-08-18 21:02:30,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:30,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:02:30,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589442280] [2020-08-18 21:02:30,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:02:30,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:02:30,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:02:30,247 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 7 states. [2020-08-18 21:02:30,555 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:31,066 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:33,389 INFO L93 Difference]: Finished difference Result 1503 states and 1948 transitions. [2020-08-18 21:02:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:02:33,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-18 21:02:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:33,397 INFO L225 Difference]: With dead ends: 1503 [2020-08-18 21:02:33,397 INFO L226 Difference]: Without dead ends: 1045 [2020-08-18 21:02:33,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:02:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-18 21:02:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 971. [2020-08-18 21:02:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-18 21:02:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1183 transitions. [2020-08-18 21:02:33,557 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1183 transitions. Word has length 97 [2020-08-18 21:02:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:33,557 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1183 transitions. [2020-08-18 21:02:33,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:02:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1183 transitions. [2020-08-18 21:02:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-18 21:02:33,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:33,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:33,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:02:33,561 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:33,562 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2020-08-18 21:02:33,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:33,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130477224] [2020-08-18 21:02:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,901 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:02:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:02:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 21:02:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 21:02:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:34,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130477224] [2020-08-18 21:02:34,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:34,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:02:34,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011187143] [2020-08-18 21:02:34,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:02:34,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:34,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:02:34,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:02:34,092 INFO L87 Difference]: Start difference. First operand 971 states and 1183 transitions. Second operand 12 states. [2020-08-18 21:02:34,662 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:35,574 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:36,282 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:36,607 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:36,845 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:37,114 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:37,395 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:39,637 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:39,959 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:40,686 INFO L93 Difference]: Finished difference Result 2749 states and 3568 transitions. [2020-08-18 21:02:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:02:40,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-18 21:02:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:40,703 INFO L225 Difference]: With dead ends: 2749 [2020-08-18 21:02:40,703 INFO L226 Difference]: Without dead ends: 2004 [2020-08-18 21:02:40,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 21:02:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-08-18 21:02:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1704. [2020-08-18 21:02:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-08-18 21:02:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2058 transitions. [2020-08-18 21:02:41,000 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2058 transitions. Word has length 101 [2020-08-18 21:02:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:41,003 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2058 transitions. [2020-08-18 21:02:41,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:02:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2058 transitions. [2020-08-18 21:02:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 21:02:41,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:41,011 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, 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, 1] [2020-08-18 21:02:41,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:02:41,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2020-08-18 21:02:41,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:41,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355091148] [2020-08-18 21:02:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,336 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:02:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:02:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 21:02:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:02:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 21:02:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 21:02:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 21:02:41,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355091148] [2020-08-18 21:02:41,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:41,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:02:41,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265259960] [2020-08-18 21:02:41,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:02:41,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:41,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:02:41,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:41,663 INFO L87 Difference]: Start difference. First operand 1704 states and 2058 transitions. Second operand 16 states. [2020-08-18 21:02:42,736 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:43,116 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:43,397 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:43,671 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:44,307 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 21:02:44,530 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:44,870 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:02:45,322 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:46,476 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:47,020 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:47,530 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 21:02:47,887 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:48,445 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:48,837 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:49,381 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:02:49,784 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:50,509 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 21:02:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:51,165 INFO L93 Difference]: Finished difference Result 3639 states and 4528 transitions. [2020-08-18 21:02:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-18 21:02:51,166 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-18 21:02:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:51,179 INFO L225 Difference]: With dead ends: 3639 [2020-08-18 21:02:51,179 INFO L226 Difference]: Without dead ends: 2149 [2020-08-18 21:02:51,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=682, Invalid=2740, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 21:02:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-08-18 21:02:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1971. [2020-08-18 21:02:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-08-18 21:02:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2328 transitions. [2020-08-18 21:02:51,607 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2328 transitions. Word has length 178 [2020-08-18 21:02:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:51,608 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2328 transitions. [2020-08-18 21:02:51,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:02:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2328 transitions. [2020-08-18 21:02:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-18 21:02:51,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:51,619 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:51,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:02:51,620 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash 477472839, now seen corresponding path program 1 times [2020-08-18 21:02:51,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:51,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989756026] [2020-08-18 21:02:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,932 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:02:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:02:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:02:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 21:02:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:02:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 21:02:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 21:02:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 21:02:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-18 21:02:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-18 21:02:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-18 21:02:52,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989756026] [2020-08-18 21:02:52,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:52,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:02:52,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050031666] [2020-08-18 21:02:52,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:02:52,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:02:52,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:02:52,529 INFO L87 Difference]: Start difference. First operand 1971 states and 2328 transitions. Second operand 15 states. [2020-08-18 21:02:53,962 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:54,253 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:54,518 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:54,760 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:54,991 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:56,068 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:56,539 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 21:02:56,989 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 21:02:57,259 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:03:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:03:00,605 INFO L93 Difference]: Finished difference Result 5414 states and 6621 transitions. [2020-08-18 21:03:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:03:00,606 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-18 21:03:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:03:00,623 INFO L225 Difference]: With dead ends: 5414 [2020-08-18 21:03:00,624 INFO L226 Difference]: Without dead ends: 3267 [2020-08-18 21:03:00,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 21:03:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-08-18 21:03:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2803. [2020-08-18 21:03:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-08-18 21:03:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3345 transitions. [2020-08-18 21:03:01,161 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3345 transitions. Word has length 301 [2020-08-18 21:03:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:03:01,162 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3345 transitions. [2020-08-18 21:03:01,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:03:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3345 transitions. [2020-08-18 21:03:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-18 21:03:01,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:01,174 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:03:01,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:03:01,174 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1744919842, now seen corresponding path program 1 times [2020-08-18 21:03:01,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:01,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056903853] [2020-08-18 21:03:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,474 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:03:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:03:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:03:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:03:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:03:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:03:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:03:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:03:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:03:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:03:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:03:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:03:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:03:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:03:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 21:03:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:03:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:03:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 21:03:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:03:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 21:03:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 21:03:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-18 21:03:01,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056903853] [2020-08-18 21:03:01,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:03:01,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:03:01,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333831436] [2020-08-18 21:03:01,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:03:01,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:03:01,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:03:01,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:03:01,996 INFO L87 Difference]: Start difference. First operand 2803 states and 3345 transitions. Second operand 16 states. [2020-08-18 21:03:02,564 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:03:03,008 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:03:03,293 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:03:03,580 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:03:04,197 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191