/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:38:22,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:38:22,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:38:22,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:38:22,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:38:22,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:38:22,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:38:22,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:38:22,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:38:22,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:38:22,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:38:22,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:38:22,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:38:22,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:38:22,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:38:22,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:38:22,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:38:22,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:38:22,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:38:22,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:38:22,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:38:22,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:38:22,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:38:22,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:38:22,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:38:22,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:38:22,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:38:22,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:38:22,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:38:22,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:38:22,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:38:22,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:38:22,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:38:22,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:38:22,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:38:22,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:38:22,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:38:22,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:38:22,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:38:22,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:38:22,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:38:22,506 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 [2020-08-21 15:38:22,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:38:22,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:38:22,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:38:22,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:38:22,547 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:38:22,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:38:22,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:38:22,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:38:22,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:38:22,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:38:22,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:38:22,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:38:22,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:38:22,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:38:22,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:38:22,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:38:22,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:38:22,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:38:22,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:38:22,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:38:22,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:38:22,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:38:22,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:38:22,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:38:22,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:38:22,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:38:22,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:38:22,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:38:22,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:38:22,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:38:22,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:38:22,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:38:22,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:38:22,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:38:22,860 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:38:22,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 15:38:22,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae4fb6652/d01cb4fd17214deb968e2f645ac93fa1/FLAG4ef770de5 [2020-08-21 15:38:23,519 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:38:23,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 15:38:23,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae4fb6652/d01cb4fd17214deb968e2f645ac93fa1/FLAG4ef770de5 [2020-08-21 15:38:23,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae4fb6652/d01cb4fd17214deb968e2f645ac93fa1 [2020-08-21 15:38:23,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:38:23,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:38:23,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:38:23,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:38:23,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:38:23,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:38:23" (1/1) ... [2020-08-21 15:38:23,803 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 21.08 03:38:23, skipping insertion in model container [2020-08-21 15:38:23,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:38:23" (1/1) ... [2020-08-21 15:38:23,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:38:23,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:38:24,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:38:24,326 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:38:24,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:38:24,443 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:38:24,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24 WrapperNode [2020-08-21 15:38:24,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:38:24,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:38:24,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:38:24,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:38:24,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (1/1) ... [2020-08-21 15:38:24,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:38:24,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:38:24,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:38:24,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:38:24,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (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 [2020-08-21 15:38:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:38:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:38:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:38:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:38:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:38:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:38:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:38:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:38:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:38:24,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:38:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:38:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:38:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:38:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:38:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:38:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:38:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:38:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:38:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:38:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 15:38:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:38:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:38:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:38:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:38:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:38:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:38:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:38:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:38:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:38:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:38:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:38:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:38:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:38:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:38:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:38:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:38:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:38:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:38:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:38:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:38:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:38:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:38:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:38:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:38:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:38:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:38:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:38:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:38:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:38:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:38:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:38:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:38:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:38:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:38:25,683 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:38:25,683 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:38:25,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:38:25 BoogieIcfgContainer [2020-08-21 15:38:25,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:38:25,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:38:25,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:38:25,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:38:25,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:38:23" (1/3) ... [2020-08-21 15:38:25,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3315e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:38:25, skipping insertion in model container [2020-08-21 15:38:25,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:24" (2/3) ... [2020-08-21 15:38:25,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3315e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:38:25, skipping insertion in model container [2020-08-21 15:38:25,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:38:25" (3/3) ... [2020-08-21 15:38:25,698 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-21 15:38:25,709 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:38:25,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:38:25,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:38:25,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:38:25,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:38:25,759 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:38:25,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:38:25,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:38:25,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:38:25,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:38:25,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:38:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-21 15:38:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:38:25,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:25,794 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] [2020-08-21 15:38:25,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-21 15:38:25,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:25,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857025165] [2020-08-21 15:38:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,526 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:26,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:38:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:38:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:26,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857025165] [2020-08-21 15:38:26,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:26,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:38:26,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114346018] [2020-08-21 15:38:26,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:38:26,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:26,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:38:26,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:38:26,681 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-21 15:38:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:27,761 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-21 15:38:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:38:27,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:38:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:27,779 INFO L225 Difference]: With dead ends: 308 [2020-08-21 15:38:27,780 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 15:38:27,785 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 [2020-08-21 15:38:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 15:38:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-21 15:38:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 15:38:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-21 15:38:27,892 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-21 15:38:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:27,893 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-21 15:38:27,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:38:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-21 15:38:27,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:38:27,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:27,903 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] [2020-08-21 15:38:27,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:38:27,904 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-21 15:38:27,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:27,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913996714] [2020-08-21 15:38:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,262 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:38:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:38:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:38:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:28,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913996714] [2020-08-21 15:38:28,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:28,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:38:28,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279829187] [2020-08-21 15:38:28,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:38:28,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:38:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:38:28,340 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-21 15:38:28,820 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:29,710 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-21 15:38:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:38:29,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 15:38:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:29,718 INFO L225 Difference]: With dead ends: 244 [2020-08-21 15:38:29,718 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 15:38:29,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:38:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 15:38:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-21 15:38:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 15:38:29,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-21 15:38:29,784 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-21 15:38:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:29,784 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-21 15:38:29,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:38:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-21 15:38:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 15:38:29,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:29,787 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] [2020-08-21 15:38:29,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:38:29,787 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:29,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-21 15:38:29,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:29,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569880064] [2020-08-21 15:38:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,105 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:38:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 15:38:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 15:38:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:30,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569880064] [2020-08-21 15:38:30,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:30,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:30,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384379405] [2020-08-21 15:38:30,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:30,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:30,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:30,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:30,268 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-21 15:38:30,656 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:30,990 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:31,240 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:31,467 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:32,359 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:33,940 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-21 15:38:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:38:33,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 15:38:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:33,946 INFO L225 Difference]: With dead ends: 435 [2020-08-21 15:38:33,946 INFO L226 Difference]: Without dead ends: 333 [2020-08-21 15:38:33,948 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 [2020-08-21 15:38:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-21 15:38:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-21 15:38:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 15:38:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-21 15:38:34,008 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-21 15:38:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:34,008 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-21 15:38:34,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-21 15:38:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 15:38:34,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:34,011 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] [2020-08-21 15:38:34,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:38:34,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-21 15:38:34,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:34,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71792] [2020-08-21 15:38:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,301 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:34,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:38:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:38:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 15:38:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 15:38:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:38:34,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71792] [2020-08-21 15:38:34,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:34,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:34,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196945745] [2020-08-21 15:38:34,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:34,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:34,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:34,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:34,424 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-21 15:38:34,751 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:35,418 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:36,275 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:36,523 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:36,811 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:37,084 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:37,557 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-21 15:38:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:38:37,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 15:38:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:37,564 INFO L225 Difference]: With dead ends: 679 [2020-08-21 15:38:37,564 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 15:38:37,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:38:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 15:38:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-21 15:38:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 15:38:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-21 15:38:37,689 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-21 15:38:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:37,689 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-21 15:38:37,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-21 15:38:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 15:38:37,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:37,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:37,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:38:37,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:37,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-21 15:38:37,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:37,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399933981] [2020-08-21 15:38:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:37,962 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:38:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:38:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:38:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:38:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:38,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399933981] [2020-08-21 15:38:38,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:38,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:38,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133120104] [2020-08-21 15:38:38,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:38,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:38,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:38,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:38,189 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-21 15:38:38,651 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:39,583 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:39,810 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:40,081 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:40,349 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:41,661 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-21 15:38:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:38:41,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 15:38:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:41,668 INFO L225 Difference]: With dead ends: 1185 [2020-08-21 15:38:41,668 INFO L226 Difference]: Without dead ends: 834 [2020-08-21 15:38:41,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:38:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-21 15:38:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-21 15:38:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-21 15:38:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-21 15:38:41,798 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-21 15:38:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:41,798 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-21 15:38:41,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-21 15:38:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 15:38:41,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:41,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:41,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:38:41,802 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-21 15:38:41,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:41,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012896257] [2020-08-21 15:38:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,067 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:38:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:38:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:38:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:38:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:42,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012896257] [2020-08-21 15:38:42,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:42,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:42,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335929615] [2020-08-21 15:38:42,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:42,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:42,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:42,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:42,247 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-21 15:38:43,306 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:43,548 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:43,804 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:44,052 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:44,725 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-21 15:38:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:38:44,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 15:38:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:44,733 INFO L225 Difference]: With dead ends: 1536 [2020-08-21 15:38:44,734 INFO L226 Difference]: Without dead ends: 847 [2020-08-21 15:38:44,737 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 [2020-08-21 15:38:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-21 15:38:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-21 15:38:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-21 15:38:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-21 15:38:44,940 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-21 15:38:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:44,943 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-21 15:38:44,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-21 15:38:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 15:38:44,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:44,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:44,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:38:44,954 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:44,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-21 15:38:44,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:44,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721128821] [2020-08-21 15:38:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,305 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:38:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:38:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:38:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:38:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:45,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721128821] [2020-08-21 15:38:45,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:45,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:38:45,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952181828] [2020-08-21 15:38:45,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:38:45,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:45,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:38:45,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:38:45,453 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-21 15:38:45,987 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:46,232 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:46,468 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:47,187 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:47,444 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:47,690 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:48,695 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-21 15:38:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:38:48,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-21 15:38:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:48,699 INFO L225 Difference]: With dead ends: 1360 [2020-08-21 15:38:48,700 INFO L226 Difference]: Without dead ends: 651 [2020-08-21 15:38:48,702 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 [2020-08-21 15:38:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-21 15:38:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-21 15:38:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-21 15:38:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-21 15:38:48,797 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-21 15:38:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:48,797 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-21 15:38:48,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:38:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-21 15:38:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 15:38:48,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:48,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:48,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:38:48,800 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-21 15:38:48,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:48,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584924897] [2020-08-21 15:38:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,124 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:38:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:38:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:38:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 15:38:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:49,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584924897] [2020-08-21 15:38:49,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:49,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:38:49,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397916744] [2020-08-21 15:38:49,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:38:49,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:38:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:38:49,342 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-21 15:38:49,893 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:50,691 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:51,356 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:51,663 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:51,904 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:52,201 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:52,479 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:53,756 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:54,040 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:54,632 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-21 15:38:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:38:54,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-21 15:38:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:54,640 INFO L225 Difference]: With dead ends: 1691 [2020-08-21 15:38:54,640 INFO L226 Difference]: Without dead ends: 1313 [2020-08-21 15:38:54,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:38:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-21 15:38:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-21 15:38:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 15:38:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-21 15:38:54,837 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-21 15:38:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:54,840 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-21 15:38:54,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:38:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-21 15:38:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 15:38:54,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:54,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:54,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:38:54,846 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:54,846 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-21 15:38:54,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:54,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23029924] [2020-08-21 15:38:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,150 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:38:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:38:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 15:38:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 15:38:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 15:38:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 15:38:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 15:38:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 15:38:55,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23029924] [2020-08-21 15:38:55,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:38:55,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:38:55,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247877647] [2020-08-21 15:38:55,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:38:55,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:55,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:38:55,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:38:55,422 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-21 15:38:55,917 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:56,255 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:56,550 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:56,807 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:57,396 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:57,697 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:58,045 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:58,319 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:59,400 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:59,874 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:00,162 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:00,486 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:00,979 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:01,496 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:01,755 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:02,020 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:02,290 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:02,746 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-21 15:39:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 15:39:02,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-21 15:39:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:02,754 INFO L225 Difference]: With dead ends: 2225 [2020-08-21 15:39:02,754 INFO L226 Difference]: Without dead ends: 1222 [2020-08-21 15:39:02,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-21 15:39:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-21 15:39:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-21 15:39:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 15:39:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-21 15:39:03,026 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-21 15:39:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:03,027 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-21 15:39:03,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:39:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-21 15:39:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-21 15:39:03,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:03,037 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:03,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:39:03,037 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:03,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-21 15:39:03,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:03,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466190223] [2020-08-21 15:39:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,378 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:39:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 15:39:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 15:39:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 15:39:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-21 15:39:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 15:39:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 15:39:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 15:39:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 15:39:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-21 15:39:04,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466190223] [2020-08-21 15:39:04,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:04,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:39:04,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566830144] [2020-08-21 15:39:04,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:39:04,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:39:04,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:39:04,086 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-21 15:39:05,870 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:06,173 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:06,414 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:06,650 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:07,821 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:09,618 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-21 15:39:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 15:39:09,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-21 15:39:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:09,630 INFO L225 Difference]: With dead ends: 3031 [2020-08-21 15:39:09,630 INFO L226 Difference]: Without dead ends: 1752 [2020-08-21 15:39:09,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 15:39:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-21 15:39:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-21 15:39:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-21 15:39:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-21 15:39:09,934 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-21 15:39:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:09,935 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-21 15:39:09,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:39:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-21 15:39:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 15:39:09,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:09,944 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-21 15:39:09,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:39:09,945 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:09,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-21 15:39:09,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:09,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398100953] [2020-08-21 15:39:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,304 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:39:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 15:39:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:39:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 15:39:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-21 15:39:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 15:39:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 15:39:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 15:39:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 15:39:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 15:39:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 15:39:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398100953] [2020-08-21 15:39:10,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:10,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 15:39:10,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478778445] [2020-08-21 15:39:10,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 15:39:10,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:10,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 15:39:10,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-21 15:39:10,866 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-21 15:39:11,595 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:11,894 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:12,137 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:12,371 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:12,988 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:13,980 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:14,221 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:14,697 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:15,413 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:16,123 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:16,376 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:17,212 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-21 15:39:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 15:39:17,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-21 15:39:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:17,223 INFO L225 Difference]: With dead ends: 2555 [2020-08-21 15:39:17,224 INFO L226 Difference]: Without dead ends: 1457 [2020-08-21 15:39:17,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 15:39:17,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-21 15:39:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-21 15:39:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-21 15:39:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-21 15:39:17,478 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-21 15:39:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:17,479 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-21 15:39:17,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 15:39:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-21 15:39:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 15:39:17,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:17,489 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:17,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:39:17,489 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:17,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-21 15:39:17,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:17,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076223874] [2020-08-21 15:39:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,766 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:39:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 15:39:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:39:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 15:39:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 15:39:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-21 15:39:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 15:39:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 15:39:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 15:39:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 15:39:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-21 15:39:18,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076223874] [2020-08-21 15:39:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:18,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 15:39:18,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509736832] [2020-08-21 15:39:18,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:18,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:18,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:18,097 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-21 15:39:18,877 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189