/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=HIGHLEXORDER -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 19:39:13,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:39:13,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:39:13,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:39:13,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:39:13,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:39:13,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:39:13,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:39:13,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:39:13,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:39:13,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:39:13,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:39:13,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:39:13,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:39:13,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:39:13,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:39:13,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:39:13,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:39:13,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:39:13,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:39:13,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:39:13,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:39:13,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:39:13,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:39:13,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:39:13,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:39:13,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:39:13,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:39:13,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:39:13,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:39:13,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:39:13,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:39:13,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:39:13,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:39:13,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:39:13,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:39:13,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:39:13,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:39:13,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:39:13,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:39:13,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:39:13,718 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 19:39:13,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:39:13,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:39:13,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:39:13,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:39:13,740 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:39:13,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:39:13,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:39:13,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:39:13,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:39:13,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:39:13,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:39:13,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:39:13,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:39:13,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:39:13,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:39:13,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:39:13,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:39:13,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:39:13,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:39:13,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:39:13,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:39:13,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:39:13,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:39:13,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:39:13,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:39:13,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:39:13,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:39:13,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:39:13,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:39:13,745 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:39:14,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:39:14,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:39:14,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:39:14,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:39:14,043 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:39:14,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 19:39:14,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f2672a5b/f80e9cc9d6864dc9a6cca5a1acc6dc29/FLAG63187dd84 [2020-08-18 19:39:14,625 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:39:14,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 19:39:14,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f2672a5b/f80e9cc9d6864dc9a6cca5a1acc6dc29/FLAG63187dd84 [2020-08-18 19:39:14,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f2672a5b/f80e9cc9d6864dc9a6cca5a1acc6dc29 [2020-08-18 19:39:14,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:39:14,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:39:14,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:39:14,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:39:14,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:39:14,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:39:14" (1/1) ... [2020-08-18 19:39:14,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d2a1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:14, skipping insertion in model container [2020-08-18 19:39:14,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:39:14" (1/1) ... [2020-08-18 19:39:14,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:39:15,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:39:15,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:39:15,439 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:39:15,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:39:15,526 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:39:15,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15 WrapperNode [2020-08-18 19:39:15,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:39:15,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:39:15,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:39:15,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:39:15,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (1/1) ... [2020-08-18 19:39:15,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:39:15,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:39:15,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:39:15,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:39:15,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (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 19:39:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:39:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:39:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:39:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-18 19:39:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-18 19:39:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-18 19:39:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-18 19:39:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-18 19:39:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-18 19:39:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-18 19:39:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-18 19:39:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-18 19:39:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-18 19:39:15,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-18 19:39:15,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-18 19:39:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-18 19:39:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-18 19:39:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 19:39:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:39:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-18 19:39:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:39:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 19:39:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 19:39:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 19:39:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 19:39:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 19:39:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:39:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:39:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-18 19:39:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-18 19:39:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:39:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:39:16,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:39:16,563 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 19:39:16,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:39:16 BoogieIcfgContainer [2020-08-18 19:39:16,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:39:16,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:39:16,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:39:16,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:39:16,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:39:14" (1/3) ... [2020-08-18 19:39:16,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e2c491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:39:16, skipping insertion in model container [2020-08-18 19:39:16,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:39:15" (2/3) ... [2020-08-18 19:39:16,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e2c491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:39:16, skipping insertion in model container [2020-08-18 19:39:16,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:39:16" (3/3) ... [2020-08-18 19:39:16,579 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-08-18 19:39:16,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:39:16,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:39:16,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:39:16,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:39:16,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:39:16,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:39:16,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:39:16,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:39:16,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:39:16,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:39:16,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:39:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2020-08-18 19:39:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 19:39:16,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:16,673 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 19:39:16,673 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:16,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1541207534, now seen corresponding path program 1 times [2020-08-18 19:39:16,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:16,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990771512] [2020-08-18 19:39:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,184 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:39:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:39:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:39:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:17,433 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 19:39:17,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990771512] [2020-08-18 19:39:17,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:17,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:39:17,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992720090] [2020-08-18 19:39:17,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:39:17,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:17,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:39:17,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:39:17,462 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 9 states. [2020-08-18 19:39:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:18,987 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2020-08-18 19:39:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:39:18,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-18 19:39:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:19,005 INFO L225 Difference]: With dead ends: 463 [2020-08-18 19:39:19,005 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 19:39:19,012 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 19:39:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 19:39:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-08-18 19:39:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 19:39:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-08-18 19:39:19,104 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 71 [2020-08-18 19:39:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:19,105 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-08-18 19:39:19,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:39:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-08-18 19:39:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 19:39:19,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:19,109 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 19:39:19,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:39:19,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash -508602450, now seen corresponding path program 1 times [2020-08-18 19:39:19,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:19,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36372382] [2020-08-18 19:39:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,341 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:39:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:39:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:39:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:19,576 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 19:39:19,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36372382] [2020-08-18 19:39:19,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:19,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 19:39:19,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171917522] [2020-08-18 19:39:19,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 19:39:19,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:19,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 19:39:19,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:39:19,580 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 14 states. [2020-08-18 19:39:19,738 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:20,001 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:39:20,153 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:39:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:22,673 INFO L93 Difference]: Finished difference Result 467 states and 671 transitions. [2020-08-18 19:39:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:39:22,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-18 19:39:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:22,688 INFO L225 Difference]: With dead ends: 467 [2020-08-18 19:39:22,688 INFO L226 Difference]: Without dead ends: 248 [2020-08-18 19:39:22,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 19:39:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-18 19:39:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2020-08-18 19:39:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 19:39:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 331 transitions. [2020-08-18 19:39:22,745 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 331 transitions. Word has length 71 [2020-08-18 19:39:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:22,746 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 331 transitions. [2020-08-18 19:39:22,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 19:39:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 331 transitions. [2020-08-18 19:39:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 19:39:22,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:22,749 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 19:39:22,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:39:22,750 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1489036951, now seen corresponding path program 1 times [2020-08-18 19:39:22,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:22,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278127963] [2020-08-18 19:39:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,962 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:23,183 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 19:39:23,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278127963] [2020-08-18 19:39:23,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:23,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:39:23,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67655472] [2020-08-18 19:39:23,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:39:23,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:23,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:39:23,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:39:23,188 INFO L87 Difference]: Start difference. First operand 238 states and 331 transitions. Second operand 11 states. [2020-08-18 19:39:24,121 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:39:24,269 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:39:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:25,313 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2020-08-18 19:39:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:39:25,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-18 19:39:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:25,318 INFO L225 Difference]: With dead ends: 456 [2020-08-18 19:39:25,318 INFO L226 Difference]: Without dead ends: 242 [2020-08-18 19:39:25,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:39:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-18 19:39:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-18 19:39:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 19:39:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2020-08-18 19:39:25,349 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 82 [2020-08-18 19:39:25,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:25,350 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2020-08-18 19:39:25,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:39:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2020-08-18 19:39:25,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 19:39:25,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:25,353 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 19:39:25,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:39:25,353 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:25,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2124611218, now seen corresponding path program 1 times [2020-08-18 19:39:25,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:25,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957279992] [2020-08-18 19:39:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,554 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 19:39:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 19:39:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:25,892 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 19:39:25,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957279992] [2020-08-18 19:39:25,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:25,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 19:39:25,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126563972] [2020-08-18 19:39:25,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:39:25,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:25,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:39:25,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:39:25,896 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 16 states. [2020-08-18 19:39:26,058 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:39:27,903 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:29,655 INFO L93 Difference]: Finished difference Result 551 states and 760 transitions. [2020-08-18 19:39:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 19:39:29,655 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-18 19:39:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:29,661 INFO L225 Difference]: With dead ends: 551 [2020-08-18 19:39:29,661 INFO L226 Difference]: Without dead ends: 333 [2020-08-18 19:39:29,663 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 19:39:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-18 19:39:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-18 19:39:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-18 19:39:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-18 19:39:29,703 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 104 [2020-08-18 19:39:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:29,704 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-18 19:39:29,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:39:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-18 19:39:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-18 19:39:29,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:29,706 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 19:39:29,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:39:29,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:29,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1802435784, now seen corresponding path program 1 times [2020-08-18 19:39:29,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:29,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594051242] [2020-08-18 19:39:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:29,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:29,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:39:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 19:39:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:30,228 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 19:39:30,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594051242] [2020-08-18 19:39:30,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:30,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 19:39:30,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765420116] [2020-08-18 19:39:30,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:39:30,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:30,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:39:30,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:39:30,232 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 16 states. [2020-08-18 19:39:30,418 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 19:39:32,122 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:33,878 INFO L93 Difference]: Finished difference Result 557 states and 768 transitions. [2020-08-18 19:39:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 19:39:33,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-18 19:39:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:33,883 INFO L225 Difference]: With dead ends: 557 [2020-08-18 19:39:33,883 INFO L226 Difference]: Without dead ends: 336 [2020-08-18 19:39:33,885 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 19:39:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-18 19:39:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 332. [2020-08-18 19:39:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-18 19:39:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 449 transitions. [2020-08-18 19:39:33,942 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 449 transitions. Word has length 105 [2020-08-18 19:39:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:33,944 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 449 transitions. [2020-08-18 19:39:33,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:39:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 449 transitions. [2020-08-18 19:39:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 19:39:33,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:33,946 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 19:39:33,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:39:33,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:33,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1848316150, now seen corresponding path program 1 times [2020-08-18 19:39:33,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:33,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344032803] [2020-08-18 19:39:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:39:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:34,414 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 19:39:34,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344032803] [2020-08-18 19:39:34,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:34,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:39:34,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903011848] [2020-08-18 19:39:34,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:39:34,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:39:34,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:39:34,417 INFO L87 Difference]: Start difference. First operand 332 states and 449 transitions. Second operand 12 states. [2020-08-18 19:39:35,131 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:39:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:37,868 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2020-08-18 19:39:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 19:39:37,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-18 19:39:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:37,874 INFO L225 Difference]: With dead ends: 791 [2020-08-18 19:39:37,875 INFO L226 Difference]: Without dead ends: 570 [2020-08-18 19:39:37,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 19:39:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-18 19:39:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-18 19:39:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 19:39:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 760 transitions. [2020-08-18 19:39:37,938 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 760 transitions. Word has length 107 [2020-08-18 19:39:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:37,939 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 760 transitions. [2020-08-18 19:39:37,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:39:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 760 transitions. [2020-08-18 19:39:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 19:39:37,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:37,941 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 19:39:37,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:39:37,942 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash -723997746, now seen corresponding path program 1 times [2020-08-18 19:39:37,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:37,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744956511] [2020-08-18 19:39:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,117 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 19:39:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 19:39:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:39:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:38,340 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 19:39:38,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744956511] [2020-08-18 19:39:38,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:38,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:39:38,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338804467] [2020-08-18 19:39:38,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:39:38,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:38,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:39:38,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:39:38,343 INFO L87 Difference]: Start difference. First operand 552 states and 760 transitions. Second operand 12 states. [2020-08-18 19:39:38,492 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:41,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:41,757 INFO L93 Difference]: Finished difference Result 968 states and 1350 transitions. [2020-08-18 19:39:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 19:39:41,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 19:39:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:41,765 INFO L225 Difference]: With dead ends: 968 [2020-08-18 19:39:41,765 INFO L226 Difference]: Without dead ends: 570 [2020-08-18 19:39:41,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 19:39:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-08-18 19:39:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 552. [2020-08-18 19:39:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 19:39:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 758 transitions. [2020-08-18 19:39:41,847 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 758 transitions. Word has length 109 [2020-08-18 19:39:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:41,847 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 758 transitions. [2020-08-18 19:39:41,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:39:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 758 transitions. [2020-08-18 19:39:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:39:41,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:41,849 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 19:39:41,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:39:41,850 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1067489879, now seen corresponding path program 1 times [2020-08-18 19:39:41,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:41,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131000292] [2020-08-18 19:39:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:39:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:42,288 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 19:39:42,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131000292] [2020-08-18 19:39:42,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:42,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:39:42,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643197753] [2020-08-18 19:39:42,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:39:42,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:42,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:39:42,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:39:42,291 INFO L87 Difference]: Start difference. First operand 552 states and 758 transitions. Second operand 12 states. [2020-08-18 19:39:43,611 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:39:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:46,053 INFO L93 Difference]: Finished difference Result 1311 states and 1841 transitions. [2020-08-18 19:39:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 19:39:46,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-18 19:39:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:46,060 INFO L225 Difference]: With dead ends: 1311 [2020-08-18 19:39:46,060 INFO L226 Difference]: Without dead ends: 913 [2020-08-18 19:39:46,062 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 19:39:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-18 19:39:46,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 907. [2020-08-18 19:39:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-08-18 19:39:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1263 transitions. [2020-08-18 19:39:46,167 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1263 transitions. Word has length 108 [2020-08-18 19:39:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:46,167 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1263 transitions. [2020-08-18 19:39:46,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:39:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1263 transitions. [2020-08-18 19:39:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:39:46,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:46,170 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 19:39:46,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:39:46,171 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:46,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:46,171 INFO L82 PathProgramCache]: Analyzing trace with hash -212373799, now seen corresponding path program 1 times [2020-08-18 19:39:46,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:46,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187132066] [2020-08-18 19:39:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:39:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:46,621 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 19:39:46,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187132066] [2020-08-18 19:39:46,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:46,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:39:46,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718654306] [2020-08-18 19:39:46,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:39:46,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:46,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:39:46,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:39:46,625 INFO L87 Difference]: Start difference. First operand 907 states and 1263 transitions. Second operand 13 states. [2020-08-18 19:39:47,957 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:39:48,086 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:39:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:48,989 INFO L93 Difference]: Finished difference Result 1662 states and 2348 transitions. [2020-08-18 19:39:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:39:48,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-18 19:39:48,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:48,998 INFO L225 Difference]: With dead ends: 1662 [2020-08-18 19:39:48,998 INFO L226 Difference]: Without dead ends: 927 [2020-08-18 19:39:49,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 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 19:39:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-08-18 19:39:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-08-18 19:39:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 19:39:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1279 transitions. [2020-08-18 19:39:49,094 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1279 transitions. Word has length 108 [2020-08-18 19:39:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:49,095 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1279 transitions. [2020-08-18 19:39:49,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:39:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1279 transitions. [2020-08-18 19:39:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 19:39:49,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:49,098 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 19:39:49,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:39:49,098 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1747753163, now seen corresponding path program 1 times [2020-08-18 19:39:49,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:49,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799470358] [2020-08-18 19:39:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,281 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:49,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:39:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:39:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:49,487 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 19:39:49,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799470358] [2020-08-18 19:39:49,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:49,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:39:49,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118358955] [2020-08-18 19:39:49,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:39:49,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:49,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:39:49,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:39:49,490 INFO L87 Difference]: Start difference. First operand 927 states and 1279 transitions. Second operand 13 states. [2020-08-18 19:39:51,272 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:39:51,394 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:39:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:52,281 INFO L93 Difference]: Finished difference Result 1702 states and 2392 transitions. [2020-08-18 19:39:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:39:52,281 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-18 19:39:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:52,288 INFO L225 Difference]: With dead ends: 1702 [2020-08-18 19:39:52,288 INFO L226 Difference]: Without dead ends: 947 [2020-08-18 19:39:52,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:39:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-08-18 19:39:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2020-08-18 19:39:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-08-18 19:39:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1295 transitions. [2020-08-18 19:39:52,391 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1295 transitions. Word has length 116 [2020-08-18 19:39:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:52,392 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1295 transitions. [2020-08-18 19:39:52,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:39:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1295 transitions. [2020-08-18 19:39:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 19:39:52,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:52,409 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 19:39:52,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:39:52,410 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:52,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:52,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1289634625, now seen corresponding path program 1 times [2020-08-18 19:39:52,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:52,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714811213] [2020-08-18 19:39:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,638 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:39:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:39:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:39:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:39:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:52,846 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 19:39:52,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714811213] [2020-08-18 19:39:52,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:52,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:39:52,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61746580] [2020-08-18 19:39:52,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:39:52,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:52,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:39:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:39:52,849 INFO L87 Difference]: Start difference. First operand 947 states and 1295 transitions. Second operand 13 states. [2020-08-18 19:39:54,399 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:39:54,540 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:39:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:55,261 INFO L93 Difference]: Finished difference Result 1738 states and 2408 transitions. [2020-08-18 19:39:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:39:55,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-18 19:39:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:55,267 INFO L225 Difference]: With dead ends: 1738 [2020-08-18 19:39:55,267 INFO L226 Difference]: Without dead ends: 963 [2020-08-18 19:39:55,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 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 19:39:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-08-18 19:39:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-08-18 19:39:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-08-18 19:39:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1307 transitions. [2020-08-18 19:39:55,362 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1307 transitions. Word has length 124 [2020-08-18 19:39:55,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:55,363 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1307 transitions. [2020-08-18 19:39:55,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:39:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1307 transitions. [2020-08-18 19:39:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 19:39:55,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:55,366 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 19:39:55,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:39:55,366 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1471497757, now seen corresponding path program 1 times [2020-08-18 19:39:55,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:55,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154015127] [2020-08-18 19:39:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:39:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:39:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:39:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:39:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:39:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:39:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:39:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:39:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:39:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:39:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:39:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:55,869 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 19:39:55,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154015127] [2020-08-18 19:39:55,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:55,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-18 19:39:55,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354080620] [2020-08-18 19:39:55,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 19:39:55,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:55,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 19:39:55,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:39:55,877 INFO L87 Difference]: Start difference. First operand 963 states and 1307 transitions. Second operand 18 states. [2020-08-18 19:39:56,230 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-18 19:39:56,407 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 19:39:56,797 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 19:39:58,062 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:58,211 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:58,341 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 19:39:59,863 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 19:40:00,010 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:40:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:40:02,062 INFO L93 Difference]: Finished difference Result 2594 states and 3626 transitions. [2020-08-18 19:40:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 19:40:02,063 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-18 19:40:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:40:02,073 INFO L225 Difference]: With dead ends: 2594 [2020-08-18 19:40:02,074 INFO L226 Difference]: Without dead ends: 1791 [2020-08-18 19:40:02,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 19:40:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-08-18 19:40:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1549. [2020-08-18 19:40:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-08-18 19:40:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2123 transitions. [2020-08-18 19:40:02,243 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2123 transitions. Word has length 124 [2020-08-18 19:40:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:40:02,245 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2123 transitions. [2020-08-18 19:40:02,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 19:40:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2123 transitions. [2020-08-18 19:40:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 19:40:02,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:40:02,248 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 19:40:02,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:40:02,248 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:40:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:40:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1891846081, now seen corresponding path program 1 times [2020-08-18 19:40:02,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:40:02,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252660287] [2020-08-18 19:40:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:40:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:40:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:40:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:40:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:40:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:40:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:40:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:40:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:40:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:40:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:40:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:40:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 19:40:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:02,652 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 19:40:02,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252660287] [2020-08-18 19:40:02,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:40:02,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:40:02,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422743449] [2020-08-18 19:40:02,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:40:02,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:40:02,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:40:02,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:40:02,660 INFO L87 Difference]: Start difference. First operand 1549 states and 2123 transitions. Second operand 13 states. [2020-08-18 19:40:04,346 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:40:04,483 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:40:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:40:05,364 INFO L93 Difference]: Finished difference Result 2816 states and 3937 transitions. [2020-08-18 19:40:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:40:05,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2020-08-18 19:40:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:40:05,379 INFO L225 Difference]: With dead ends: 2816 [2020-08-18 19:40:05,380 INFO L226 Difference]: Without dead ends: 1589 [2020-08-18 19:40:05,392 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 19:40:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-08-18 19:40:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2020-08-18 19:40:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-08-18 19:40:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2155 transitions. [2020-08-18 19:40:05,674 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2155 transitions. Word has length 131 [2020-08-18 19:40:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:40:05,675 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 2155 transitions. [2020-08-18 19:40:05,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:40:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2155 transitions. [2020-08-18 19:40:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 19:40:05,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:40:05,680 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] [2020-08-18 19:40:05,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 19:40:05,680 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:40:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:40:05,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1423528137, now seen corresponding path program 1 times [2020-08-18 19:40:05,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:40:05,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048296586] [2020-08-18 19:40:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:40:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:05,979 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 19:40:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:40:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:40:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:40:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 19:40:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:40:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:40:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:40:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:40:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:40:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 19:40:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:40:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:40:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 19:40:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 19:40:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:40:06,383 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 19:40:06,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048296586] [2020-08-18 19:40:06,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:40:06,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:40:06,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953324556] [2020-08-18 19:40:06,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:40:06,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:40:06,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:40:06,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:40:06,387 INFO L87 Difference]: Start difference. First operand 1589 states and 2155 transitions. Second operand 13 states. [2020-08-18 19:40:07,821 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-08-18 19:40:08,520 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 19:40:08,710 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 19:40:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:40:09,883 INFO L93 Difference]: Finished difference Result 2876 states and 3949 transitions. [2020-08-18 19:40:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:40:09,884 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-08-18 19:40:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:40:09,898 INFO L225 Difference]: With dead ends: 2876 [2020-08-18 19:40:09,898 INFO L226 Difference]: Without dead ends: 1621 [2020-08-18 19:40:09,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:40:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states.