/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:41:12,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:41:12,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:41:12,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:41:12,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:41:12,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:41:12,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:41:12,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:41:12,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:41:12,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:41:12,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:41:12,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:41:12,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:41:12,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:41:12,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:41:12,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:41:12,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:41:12,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:41:12,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:41:12,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:41:12,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:41:12,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:41:12,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:41:12,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:41:12,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:41:12,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:41:12,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:41:12,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:41:12,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:41:12,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:41:12,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:41:12,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:41:12,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:41:12,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:41:12,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:41:12,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:41:12,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:41:12,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:41:12,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:41:12,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:41:12,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:41:12,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:41:12,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:41:12,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:41:12,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:41:12,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:41:12,471 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:41:12,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:41:12,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:41:12,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:41:12,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:41:12,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:41:12,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:41:12,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:41:12,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:41:12,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:41:12,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:41:12,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:41:12,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:41:12,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:41:12,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:41:12,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:41:12,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:41:12,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:12,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:41:12,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:41:12,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:41:12,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:41:12,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:41:12,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:41:12,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:41:12,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:41:12,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:41:12,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:41:12,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:41:12,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:41:12,803 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:41:12,804 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 23:41:12,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/011812737/d6d47edb55444f998a9eb7ae05e3f02f/FLAG7dfab23ad [2020-08-18 23:41:13,440 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:41:13,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 23:41:13,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/011812737/d6d47edb55444f998a9eb7ae05e3f02f/FLAG7dfab23ad [2020-08-18 23:41:13,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/011812737/d6d47edb55444f998a9eb7ae05e3f02f [2020-08-18 23:41:13,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:41:13,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:41:13,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:13,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:41:13,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:41:13,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:13" (1/1) ... [2020-08-18 23:41:13,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c051e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:13, skipping insertion in model container [2020-08-18 23:41:13,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:41:13" (1/1) ... [2020-08-18 23:41:13,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:41:13,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:41:14,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:14,280 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:41:14,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:41:14,393 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:41:14,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14 WrapperNode [2020-08-18 23:41:14,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:41:14,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:41:14,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:41:14,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:41:14,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... [2020-08-18 23:41:14,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:41:14,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:41:14,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:41:14,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:41:14,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:41:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:41:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:41:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:41:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-18 23:41:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-18 23:41:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-18 23:41:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-18 23:41:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-18 23:41:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-18 23:41:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-18 23:41:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-18 23:41:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-18 23:41:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-18 23:41:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-18 23:41:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-18 23:41:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-18 23:41:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-18 23:41:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 23:41:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:41:14,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 23:41:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-18 23:41:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-18 23:41:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-18 23:41:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-18 23:41:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 23:41:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-18 23:41:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-18 23:41:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-18 23:41:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-18 23:41:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-18 23:41:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 23:41:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:41:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:41:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:41:15,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:41:15,472 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 23:41:15,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:15 BoogieIcfgContainer [2020-08-18 23:41:15,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:41:15,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:41:15,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:41:15,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:41:15,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:41:13" (1/3) ... [2020-08-18 23:41:15,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709435d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:15, skipping insertion in model container [2020-08-18 23:41:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:41:14" (2/3) ... [2020-08-18 23:41:15,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709435d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:41:15, skipping insertion in model container [2020-08-18 23:41:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:41:15" (3/3) ... [2020-08-18 23:41:15,488 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 23:41:15,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:41:15,509 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:41:15,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:41:15,554 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:41:15,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:41:15,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:41:15,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:41:15,555 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:41:15,555 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:41:15,555 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:41:15,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:41:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2020-08-18 23:41:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 23:41:15,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:15,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:15,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:15,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:15,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1541207534, now seen corresponding path program 1 times [2020-08-18 23:41:15,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:15,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612024812] [2020-08-18 23:41:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,132 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:16,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:41:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:41:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:41:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:16,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612024812] [2020-08-18 23:41:16,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:16,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:41:16,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782335358] [2020-08-18 23:41:16,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:41:16,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:16,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:41:16,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:41:16,460 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 9 states. [2020-08-18 23:41:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:18,006 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2020-08-18 23:41:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:41:18,008 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-18 23:41:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:18,023 INFO L225 Difference]: With dead ends: 463 [2020-08-18 23:41:18,024 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 23:41:18,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:41:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 23:41:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-18 23:41:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 23:41:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-08-18 23:41:18,121 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 71 [2020-08-18 23:41:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:18,122 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-08-18 23:41:18,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:41:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-08-18 23:41:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 23:41:18,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:18,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:18,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:41:18,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash -508602450, now seen corresponding path program 1 times [2020-08-18 23:41:18,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:18,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599481989] [2020-08-18 23:41:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,350 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:18,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:41:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:41:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:41:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:18,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599481989] [2020-08-18 23:41:18,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:18,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 23:41:18,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916910393] [2020-08-18 23:41:18,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 23:41:18,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 23:41:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:41:18,649 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 14 states. [2020-08-18 23:41:18,842 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:19,061 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:19,225 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 23:41:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:21,766 INFO L93 Difference]: Finished difference Result 467 states and 671 transitions. [2020-08-18 23:41:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:41:21,767 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-18 23:41:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:21,776 INFO L225 Difference]: With dead ends: 467 [2020-08-18 23:41:21,777 INFO L226 Difference]: Without dead ends: 248 [2020-08-18 23:41:21,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:41:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-18 23:41:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2020-08-18 23:41:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 23:41:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 331 transitions. [2020-08-18 23:41:21,865 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 331 transitions. Word has length 71 [2020-08-18 23:41:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:21,865 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 331 transitions. [2020-08-18 23:41:21,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 23:41:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 331 transitions. [2020-08-18 23:41:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 23:41:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:21,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:21,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:41:21,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1489036951, now seen corresponding path program 1 times [2020-08-18 23:41:21,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:21,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490879299] [2020-08-18 23:41:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,141 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:41:22,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490879299] [2020-08-18 23:41:22,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:22,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:41:22,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009368422] [2020-08-18 23:41:22,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:41:22,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:22,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:41:22,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:41:22,311 INFO L87 Difference]: Start difference. First operand 238 states and 331 transitions. Second operand 11 states. [2020-08-18 23:41:23,246 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:23,375 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:24,455 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2020-08-18 23:41:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:41:24,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-18 23:41:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:24,461 INFO L225 Difference]: With dead ends: 456 [2020-08-18 23:41:24,461 INFO L226 Difference]: Without dead ends: 242 [2020-08-18 23:41:24,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:41:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-18 23:41:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-18 23:41:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 23:41:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2020-08-18 23:41:24,509 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 82 [2020-08-18 23:41:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:24,509 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2020-08-18 23:41:24,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:41:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2020-08-18 23:41:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 23:41:24,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:24,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:24,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:41:24,513 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2124611218, now seen corresponding path program 1 times [2020-08-18 23:41:24,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:24,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148351717] [2020-08-18 23:41:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,726 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:24,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 23:41:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:41:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:25,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148351717] [2020-08-18 23:41:25,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:25,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 23:41:25,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268754639] [2020-08-18 23:41:25,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:41:25,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:25,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:41:25,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:41:25,042 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 16 states. [2020-08-18 23:41:25,212 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 23:41:27,019 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:28,826 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2020-08-18 23:41:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:41:28,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-18 23:41:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:28,835 INFO L225 Difference]: With dead ends: 551 [2020-08-18 23:41:28,835 INFO L226 Difference]: Without dead ends: 333 [2020-08-18 23:41:28,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 23:41:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-18 23:41:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-18 23:41:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-18 23:41:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-18 23:41:28,895 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 104 [2020-08-18 23:41:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:28,896 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-18 23:41:28,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:41:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-18 23:41:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-18 23:41:28,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:28,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:28,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:41:28,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1802435784, now seen corresponding path program 1 times [2020-08-18 23:41:28,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:28,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415074193] [2020-08-18 23:41:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,153 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:29,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:41:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 23:41:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:29,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415074193] [2020-08-18 23:41:29,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:29,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 23:41:29,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141515646] [2020-08-18 23:41:29,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:41:29,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:29,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:41:29,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:41:29,449 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 16 states. [2020-08-18 23:41:29,622 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 23:41:31,355 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:33,177 INFO L93 Difference]: Finished difference Result 557 states and 768 transitions. [2020-08-18 23:41:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:41:33,177 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-18 23:41:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:33,181 INFO L225 Difference]: With dead ends: 557 [2020-08-18 23:41:33,182 INFO L226 Difference]: Without dead ends: 336 [2020-08-18 23:41:33,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 23:41:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-18 23:41:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2020-08-18 23:41:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-18 23:41:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-18 23:41:33,221 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 105 [2020-08-18 23:41:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:33,222 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-18 23:41:33,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:41:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-18 23:41:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 23:41:33,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:33,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:33,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:41:33,224 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1848316150, now seen corresponding path program 1 times [2020-08-18 23:41:33,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:33,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683336147] [2020-08-18 23:41:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,417 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 23:41:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:33,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683336147] [2020-08-18 23:41:33,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:33,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:33,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287033591] [2020-08-18 23:41:33,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:33,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:33,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:33,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:33,656 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 12 states. [2020-08-18 23:41:34,354 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:37,171 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2020-08-18 23:41:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:37,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-18 23:41:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:37,177 INFO L225 Difference]: With dead ends: 791 [2020-08-18 23:41:37,177 INFO L226 Difference]: Without dead ends: 570 [2020-08-18 23:41:37,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:41:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-18 23:41:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-18 23:41:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 23:41:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 760 transitions. [2020-08-18 23:41:37,279 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 760 transitions. Word has length 107 [2020-08-18 23:41:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:37,279 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 760 transitions. [2020-08-18 23:41:37,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 760 transitions. [2020-08-18 23:41:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 23:41:37,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:37,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:37,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:41:37,282 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:37,282 INFO L82 PathProgramCache]: Analyzing trace with hash -723997746, now seen corresponding path program 1 times [2020-08-18 23:41:37,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:37,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602436042] [2020-08-18 23:41:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,452 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 23:41:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:41:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:41:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:37,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602436042] [2020-08-18 23:41:37,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:37,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:37,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871021643] [2020-08-18 23:41:37,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:37,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:37,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:37,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:37,773 INFO L87 Difference]: Start difference. First operand 552 states and 760 transitions. Second operand 12 states. [2020-08-18 23:41:37,993 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:41,460 INFO L93 Difference]: Finished difference Result 968 states and 1350 transitions. [2020-08-18 23:41:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:41,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 23:41:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:41,466 INFO L225 Difference]: With dead ends: 968 [2020-08-18 23:41:41,467 INFO L226 Difference]: Without dead ends: 570 [2020-08-18 23:41:41,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:41:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-18 23:41:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-18 23:41:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 23:41:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 758 transitions. [2020-08-18 23:41:41,546 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 758 transitions. Word has length 109 [2020-08-18 23:41:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:41,547 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 758 transitions. [2020-08-18 23:41:41,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 758 transitions. [2020-08-18 23:41:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:41:41,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:41,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:41,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:41:41,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1067489879, now seen corresponding path program 1 times [2020-08-18 23:41:41,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:41,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252290228] [2020-08-18 23:41:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,748 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:41,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:42,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252290228] [2020-08-18 23:41:42,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:42,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:41:42,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213138950] [2020-08-18 23:41:42,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:41:42,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:42,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:41:42,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:41:42,061 INFO L87 Difference]: Start difference. First operand 552 states and 758 transitions. Second operand 12 states. [2020-08-18 23:41:43,103 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:45,617 INFO L93 Difference]: Finished difference Result 1311 states and 1841 transitions. [2020-08-18 23:41:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 23:41:45,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-18 23:41:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:45,626 INFO L225 Difference]: With dead ends: 1311 [2020-08-18 23:41:45,626 INFO L226 Difference]: Without dead ends: 913 [2020-08-18 23:41:45,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:41:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-18 23:41:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 907. [2020-08-18 23:41:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-08-18 23:41:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1263 transitions. [2020-08-18 23:41:45,755 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1263 transitions. Word has length 108 [2020-08-18 23:41:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:45,756 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1263 transitions. [2020-08-18 23:41:45,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:41:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1263 transitions. [2020-08-18 23:41:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:41:45,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:45,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:45,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:41:45,760 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash -212373799, now seen corresponding path program 1 times [2020-08-18 23:41:45,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:45,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535330244] [2020-08-18 23:41:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:45,967 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:45,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:46,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535330244] [2020-08-18 23:41:46,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:46,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:41:46,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990681391] [2020-08-18 23:41:46,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:41:46,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:46,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:41:46,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:41:46,181 INFO L87 Difference]: Start difference. First operand 907 states and 1263 transitions. Second operand 13 states. [2020-08-18 23:41:47,763 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:47,890 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:48,862 INFO L93 Difference]: Finished difference Result 1662 states and 2348 transitions. [2020-08-18 23:41:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:48,862 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-18 23:41:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:48,869 INFO L225 Difference]: With dead ends: 1662 [2020-08-18 23:41:48,869 INFO L226 Difference]: Without dead ends: 927 [2020-08-18 23:41:48,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:41:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-08-18 23:41:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-08-18 23:41:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 23:41:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1279 transitions. [2020-08-18 23:41:48,967 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1279 transitions. Word has length 108 [2020-08-18 23:41:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:48,968 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1279 transitions. [2020-08-18 23:41:48,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:41:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1279 transitions. [2020-08-18 23:41:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 23:41:48,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:48,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:48,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:41:48,971 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1747753163, now seen corresponding path program 1 times [2020-08-18 23:41:48,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:48,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765186630] [2020-08-18 23:41:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,176 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:41:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:49,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765186630] [2020-08-18 23:41:49,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:49,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:41:49,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366661990] [2020-08-18 23:41:49,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:41:49,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:49,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:41:49,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:41:49,417 INFO L87 Difference]: Start difference. First operand 927 states and 1279 transitions. Second operand 13 states. [2020-08-18 23:41:50,926 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:51,053 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:51,963 INFO L93 Difference]: Finished difference Result 1702 states and 2392 transitions. [2020-08-18 23:41:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:51,963 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-18 23:41:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:51,971 INFO L225 Difference]: With dead ends: 1702 [2020-08-18 23:41:51,971 INFO L226 Difference]: Without dead ends: 947 [2020-08-18 23:41:51,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:41:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-08-18 23:41:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2020-08-18 23:41:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-08-18 23:41:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1295 transitions. [2020-08-18 23:41:52,070 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1295 transitions. Word has length 116 [2020-08-18 23:41:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:52,071 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1295 transitions. [2020-08-18 23:41:52,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:41:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1295 transitions. [2020-08-18 23:41:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 23:41:52,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:52,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:52,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:41:52,075 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:52,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1289634625, now seen corresponding path program 1 times [2020-08-18 23:41:52,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:52,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521113860] [2020-08-18 23:41:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,342 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:41:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:41:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:41:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:52,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521113860] [2020-08-18 23:41:52,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:52,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:41:52,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193325492] [2020-08-18 23:41:52,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:41:52,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:41:52,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:41:52,567 INFO L87 Difference]: Start difference. First operand 947 states and 1295 transitions. Second operand 13 states. [2020-08-18 23:41:54,132 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:41:54,275 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:41:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:41:55,034 INFO L93 Difference]: Finished difference Result 1738 states and 2408 transitions. [2020-08-18 23:41:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:41:55,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-18 23:41:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:41:55,042 INFO L225 Difference]: With dead ends: 1738 [2020-08-18 23:41:55,042 INFO L226 Difference]: Without dead ends: 963 [2020-08-18 23:41:55,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:41:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-08-18 23:41:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-08-18 23:41:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-08-18 23:41:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1307 transitions. [2020-08-18 23:41:55,141 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1307 transitions. Word has length 124 [2020-08-18 23:41:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:41:55,142 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1307 transitions. [2020-08-18 23:41:55,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:41:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1307 transitions. [2020-08-18 23:41:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 23:41:55,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:41:55,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:41:55,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:41:55,146 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:41:55,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:41:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1471497757, now seen corresponding path program 1 times [2020-08-18 23:41:55,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:41:55,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240115373] [2020-08-18 23:41:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:41:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:41:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:41:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:41:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:41:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:41:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:41:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:41:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:41:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:41:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:41:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:41:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:41:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:41:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:41:55,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240115373] [2020-08-18 23:41:55,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:41:55,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-18 23:41:55,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776342030] [2020-08-18 23:41:55,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 23:41:55,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:41:55,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 23:41:55,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:41:55,725 INFO L87 Difference]: Start difference. First operand 963 states and 1307 transitions. Second operand 18 states. [2020-08-18 23:41:56,014 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-18 23:41:56,541 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 23:41:57,799 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:57,947 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:58,092 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:41:59,649 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 23:41:59,795 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:42:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:01,914 INFO L93 Difference]: Finished difference Result 2594 states and 3626 transitions. [2020-08-18 23:42:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 23:42:01,915 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-18 23:42:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:01,927 INFO L225 Difference]: With dead ends: 2594 [2020-08-18 23:42:01,927 INFO L226 Difference]: Without dead ends: 1791 [2020-08-18 23:42:01,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 23:42:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-08-18 23:42:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1549. [2020-08-18 23:42:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-08-18 23:42:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2123 transitions. [2020-08-18 23:42:02,100 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2123 transitions. Word has length 124 [2020-08-18 23:42:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:02,103 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2123 transitions. [2020-08-18 23:42:02,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 23:42:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2123 transitions. [2020-08-18 23:42:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 23:42:02,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:02,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:42:02,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:42:02,106 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:02,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1891846081, now seen corresponding path program 1 times [2020-08-18 23:42:02,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:02,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265883002] [2020-08-18 23:42:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,312 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:42:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:42:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:42:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:42:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:42:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:42:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:42:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:42:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:42:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:42:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:42:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:42:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 23:42:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 23:42:02,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265883002] [2020-08-18 23:42:02,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:42:02,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:42:02,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265467650] [2020-08-18 23:42:02,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:42:02,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:42:02,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:42:02,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:42:02,592 INFO L87 Difference]: Start difference. First operand 1549 states and 2123 transitions. Second operand 13 states. [2020-08-18 23:42:04,019 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 23:42:04,144 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 23:42:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:42:05,061 INFO L93 Difference]: Finished difference Result 2816 states and 3937 transitions. [2020-08-18 23:42:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:42:05,062 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2020-08-18 23:42:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:42:05,076 INFO L225 Difference]: With dead ends: 2816 [2020-08-18 23:42:05,076 INFO L226 Difference]: Without dead ends: 1589 [2020-08-18 23:42:05,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:42:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-08-18 23:42:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2020-08-18 23:42:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-08-18 23:42:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2155 transitions. [2020-08-18 23:42:05,361 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2155 transitions. Word has length 131 [2020-08-18 23:42:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:42:05,364 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 2155 transitions. [2020-08-18 23:42:05,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:42:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2155 transitions. [2020-08-18 23:42:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-18 23:42:05,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:42:05,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:42:05,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 23:42:05,371 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:42:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:42:05,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1235243833, now seen corresponding path program 1 times [2020-08-18 23:42:05,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:42:05,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490855446] [2020-08-18 23:42:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:42:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,703 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 23:42:05,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:42:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:42:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:42:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 23:42:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:42:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:42:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:42:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:42:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 23:42:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:42:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 23:42:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:05,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 23:42:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:06,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 23:42:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 23:42:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:42:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 23:42:06,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490855446] [2020-08-18 23:42:06,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:42:06,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:42:06,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262997473] [2020-08-18 23:42:06,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:42:06,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:42:06,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:42:06,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:42:06,058 INFO L87 Difference]: Start difference. First operand 1589 states and 2155 transitions. Second operand 12 states. [2020-08-18 23:42:06,278 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 23:42:07,904 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95