/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:44:16,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:44:16,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:44:16,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:44:16,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:44:16,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:44:16,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:44:16,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:44:16,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:44:16,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:44:16,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:44:16,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:44:16,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:44:16,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:44:16,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:44:16,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:44:16,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:44:16,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:44:16,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:44:16,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:44:16,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:44:16,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:44:16,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:44:16,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:44:16,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:44:16,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:44:16,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:44:16,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:44:16,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:44:16,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:44:16,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:44:16,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:44:16,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:44:16,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:44:16,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:44:16,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:44:16,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:44:16,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:44:16,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:44:16,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:44:16,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:44:16,842 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 [2020-08-19 03:44:16,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:44:16,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:44:16,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:44:16,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:44:16,875 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:44:16,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:44:16,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:44:16,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:44:16,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:44:16,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:44:16,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:44:16,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:44:16,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:44:16,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:44:16,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:44:16,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:44:16,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:44:16,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:44:16,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:44:16,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:44:16,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:44:16,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:44:16,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:44:16,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:44:16,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:44:16,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:44:16,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:44:16,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:44:16,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:44:16,880 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:44:17,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:44:17,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:44:17,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:44:17,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:44:17,188 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:44:17,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-19 03:44:17,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd0271023/a735c6a9957a433eb986528b15fa4bcd/FLAGdd5fc7d1f [2020-08-19 03:44:17,803 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:44:17,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-19 03:44:17,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd0271023/a735c6a9957a433eb986528b15fa4bcd/FLAGdd5fc7d1f [2020-08-19 03:44:18,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd0271023/a735c6a9957a433eb986528b15fa4bcd [2020-08-19 03:44:18,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:44:18,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:44:18,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:44:18,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:44:18,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:44:18,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a964ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18, skipping insertion in model container [2020-08-19 03:44:18,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:44:18,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:44:18,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:44:18,620 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:44:18,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:44:18,716 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:44:18,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18 WrapperNode [2020-08-19 03:44:18,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:44:18,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:44:18,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:44:18,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:44:18,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (1/1) ... [2020-08-19 03:44:18,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:44:18,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:44:18,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:44:18,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:44:18,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (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 [2020-08-19 03:44:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:44:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:44:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 03:44:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-19 03:44:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-19 03:44:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-19 03:44:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-19 03:44:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-19 03:44:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-19 03:44:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-19 03:44:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-19 03:44:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-19 03:44:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-19 03:44:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-19 03:44:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-19 03:44:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-19 03:44:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-19 03:44:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 03:44:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:44:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-19 03:44:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:44:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 03:44:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 03:44:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 03:44:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 03:44:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 03:44:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:44:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 03:44:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-19 03:44:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-19 03:44:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 03:44:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:44:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:44:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:44:19,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:44:19,717 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 03:44:19,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:44:19 BoogieIcfgContainer [2020-08-19 03:44:19,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:44:19,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:44:19,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:44:19,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:44:19,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:44:18" (1/3) ... [2020-08-19 03:44:19,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196a68bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:44:19, skipping insertion in model container [2020-08-19 03:44:19,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:44:18" (2/3) ... [2020-08-19 03:44:19,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196a68bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:44:19, skipping insertion in model container [2020-08-19 03:44:19,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:44:19" (3/3) ... [2020-08-19 03:44:19,733 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-19 03:44:19,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:44:19,752 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:44:19,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:44:19,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:44:19,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:44:19,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:44:19,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:44:19,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:44:19,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:44:19,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:44:19,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:44:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-19 03:44:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 03:44:19,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:19,836 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] [2020-08-19 03:44:19,836 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-19 03:44:19,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:19,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404874378] [2020-08-19 03:44:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,329 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:44:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:44:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:44:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:44:20,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404874378] [2020-08-19 03:44:20,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:20,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:44:20,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584004252] [2020-08-19 03:44:20,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:44:20,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:20,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:44:20,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:44:20,652 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-19 03:44:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:22,217 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-19 03:44:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:44:22,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-19 03:44:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:22,234 INFO L225 Difference]: With dead ends: 456 [2020-08-19 03:44:22,234 INFO L226 Difference]: Without dead ends: 237 [2020-08-19 03:44:22,241 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 [2020-08-19 03:44:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-19 03:44:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-19 03:44:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 03:44:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-19 03:44:22,366 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-19 03:44:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:22,367 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-19 03:44:22,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:44:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-19 03:44:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 03:44:22,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:22,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:22,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:44:22,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:22,373 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-19 03:44:22,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:22,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011026563] [2020-08-19 03:44:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,587 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:44:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:44:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:44:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:44:22,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011026563] [2020-08-19 03:44:22,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:22,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 03:44:22,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983171348] [2020-08-19 03:44:22,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 03:44:22,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:22,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 03:44:22,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:44:22,892 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-19 03:44:23,073 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:44:23,366 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 03:44:23,517 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 03:44:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:25,965 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-19 03:44:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:44:25,966 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-19 03:44:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:25,969 INFO L225 Difference]: With dead ends: 455 [2020-08-19 03:44:25,973 INFO L226 Difference]: Without dead ends: 237 [2020-08-19 03:44:25,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-19 03:44:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-19 03:44:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-19 03:44:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 03:44:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-19 03:44:26,068 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-19 03:44:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:26,069 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-19 03:44:26,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 03:44:26,069 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-19 03:44:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 03:44:26,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:26,078 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] [2020-08-19 03:44:26,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:44:26,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:26,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-19 03:44:26,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:26,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142671592] [2020-08-19 03:44:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:44:26,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142671592] [2020-08-19 03:44:26,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:26,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:44:26,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382987137] [2020-08-19 03:44:26,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:44:26,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:44:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:44:26,523 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-19 03:44:27,399 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 03:44:27,554 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 03:44:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:28,609 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-19 03:44:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:44:28,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-19 03:44:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:28,619 INFO L225 Difference]: With dead ends: 454 [2020-08-19 03:44:28,620 INFO L226 Difference]: Without dead ends: 241 [2020-08-19 03:44:28,621 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 [2020-08-19 03:44:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-19 03:44:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-19 03:44:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-19 03:44:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-19 03:44:28,678 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-19 03:44:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:28,678 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-19 03:44:28,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:44:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-19 03:44:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 03:44:28,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:28,681 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] [2020-08-19 03:44:28,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:44:28,681 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-19 03:44:28,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:28,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118627271] [2020-08-19 03:44:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:28,909 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:28,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:28,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 03:44:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 03:44:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:29,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118627271] [2020-08-19 03:44:29,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:29,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 03:44:29,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463440610] [2020-08-19 03:44:29,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 03:44:29,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:29,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 03:44:29,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:44:29,232 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-19 03:44:29,438 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 03:44:31,280 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:44:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:33,154 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-19 03:44:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 03:44:33,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-19 03:44:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:33,159 INFO L225 Difference]: With dead ends: 549 [2020-08-19 03:44:33,160 INFO L226 Difference]: Without dead ends: 332 [2020-08-19 03:44:33,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 03:44:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-19 03:44:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-19 03:44:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-19 03:44:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-19 03:44:33,203 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-19 03:44:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:33,203 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-19 03:44:33,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 03:44:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-19 03:44:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 03:44:33,205 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:33,205 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] [2020-08-19 03:44:33,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:44:33,206 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:33,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-19 03:44:33,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:33,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367465562] [2020-08-19 03:44:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,465 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:44:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 03:44:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:33,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367465562] [2020-08-19 03:44:33,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:33,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 03:44:33,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922262735] [2020-08-19 03:44:33,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 03:44:33,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 03:44:33,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:44:33,763 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-19 03:44:33,930 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-19 03:44:35,688 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:44:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:37,447 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-19 03:44:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 03:44:37,448 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-19 03:44:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:37,453 INFO L225 Difference]: With dead ends: 555 [2020-08-19 03:44:37,453 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 03:44:37,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 03:44:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 03:44:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-19 03:44:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-19 03:44:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-19 03:44:37,491 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-19 03:44:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:37,492 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-19 03:44:37,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 03:44:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-19 03:44:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 03:44:37,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:37,494 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] [2020-08-19 03:44:37,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:44:37,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:37,495 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-19 03:44:37,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:37,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280502169] [2020-08-19 03:44:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,676 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:44:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:37,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280502169] [2020-08-19 03:44:37,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:37,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:44:37,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384985682] [2020-08-19 03:44:37,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:44:37,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:44:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:44:37,935 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-19 03:44:38,659 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 03:44:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:41,366 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-19 03:44:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:44:41,367 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-19 03:44:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:41,372 INFO L225 Difference]: With dead ends: 788 [2020-08-19 03:44:41,372 INFO L226 Difference]: Without dead ends: 568 [2020-08-19 03:44:41,374 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 [2020-08-19 03:44:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-19 03:44:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-19 03:44:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-19 03:44:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-19 03:44:41,442 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-19 03:44:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:41,443 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-19 03:44:41,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:44:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-19 03:44:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:44:41,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:41,445 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] [2020-08-19 03:44:41,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:44:41,446 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-19 03:44:41,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:41,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366750417] [2020-08-19 03:44:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,645 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:44:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:41,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366750417] [2020-08-19 03:44:41,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:41,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:44:41,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046120191] [2020-08-19 03:44:41,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:44:41,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:41,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:44:41,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:44:41,884 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-19 03:44:42,895 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 03:44:45,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:45,467 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-19 03:44:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:44:45,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-19 03:44:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:45,479 INFO L225 Difference]: With dead ends: 1308 [2020-08-19 03:44:45,479 INFO L226 Difference]: Without dead ends: 911 [2020-08-19 03:44:45,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:44:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-19 03:44:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-19 03:44:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-19 03:44:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-19 03:44:45,647 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-19 03:44:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:45,648 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-19 03:44:45,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:44:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-19 03:44:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 03:44:45,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:45,650 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] [2020-08-19 03:44:45,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:44:45,651 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-19 03:44:45,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:45,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575881623] [2020-08-19 03:44:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 03:44:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:46,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:46,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:44:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:46,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575881623] [2020-08-19 03:44:46,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:46,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:44:46,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027011053] [2020-08-19 03:44:46,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:44:46,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:46,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:44:46,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:44:46,062 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-19 03:44:46,201 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:44:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:49,434 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-19 03:44:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:44:49,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-19 03:44:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:49,441 INFO L225 Difference]: With dead ends: 1649 [2020-08-19 03:44:49,442 INFO L226 Difference]: Without dead ends: 916 [2020-08-19 03:44:49,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:44:49,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-19 03:44:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-19 03:44:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-19 03:44:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-19 03:44:49,566 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-19 03:44:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:49,567 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-19 03:44:49,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:44:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-19 03:44:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:44:49,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:49,570 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] [2020-08-19 03:44:49,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:44:49,570 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-19 03:44:49,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:49,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551289868] [2020-08-19 03:44:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,755 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:50,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:44:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:50,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551289868] [2020-08-19 03:44:50,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:50,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:44:50,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793273813] [2020-08-19 03:44:50,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:44:50,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:44:50,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:44:50,056 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-19 03:44:51,791 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 03:44:51,918 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 03:44:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:52,853 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-19 03:44:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:44:52,859 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-19 03:44:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:52,864 INFO L225 Difference]: With dead ends: 1663 [2020-08-19 03:44:52,865 INFO L226 Difference]: Without dead ends: 930 [2020-08-19 03:44:52,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:44:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-19 03:44:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-19 03:44:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-19 03:44:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-19 03:44:52,969 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-19 03:44:52,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:52,970 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-19 03:44:52,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:44:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-19 03:44:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 03:44:52,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:52,973 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] [2020-08-19 03:44:52,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:44:52,973 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-19 03:44:52,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:52,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534384511] [2020-08-19 03:44:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,181 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 03:44:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 03:44:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:44:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 03:44:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:53,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534384511] [2020-08-19 03:44:53,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:44:53,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446817085] [2020-08-19 03:44:53,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:44:53,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:44:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:44:53,528 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-19 03:44:53,732 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:44:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:57,455 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-19 03:44:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:44:57,456 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-19 03:44:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:57,462 INFO L225 Difference]: With dead ends: 1715 [2020-08-19 03:44:57,462 INFO L226 Difference]: Without dead ends: 962 [2020-08-19 03:44:57,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:44:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-19 03:44:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-19 03:44:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-19 03:44:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-19 03:44:57,569 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-19 03:44:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:57,570 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-19 03:44:57,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:44:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-19 03:44:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-19 03:44:57,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:57,577 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] [2020-08-19 03:44:57,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:44:57,577 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-19 03:44:57,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:57,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338110320] [2020-08-19 03:44:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,844 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:44:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:44:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:44:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:44:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:44:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:44:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:44:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:44:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:44:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:58,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:44:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:44:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:44:58,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338110320] [2020-08-19 03:44:58,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:44:58,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:44:58,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807856558] [2020-08-19 03:44:58,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:44:58,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:44:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:44:58,068 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-19 03:44:59,700 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 03:44:59,844 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 03:45:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:45:00,777 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-19 03:45:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:45:00,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-19 03:45:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:45:00,782 INFO L225 Difference]: With dead ends: 1703 [2020-08-19 03:45:00,782 INFO L226 Difference]: Without dead ends: 950 [2020-08-19 03:45:00,786 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 [2020-08-19 03:45:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-19 03:45:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-19 03:45:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-19 03:45:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-19 03:45:00,888 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-19 03:45:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:45:00,889 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-19 03:45:00,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:45:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-19 03:45:00,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-19 03:45:00,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:45:00,892 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] [2020-08-19 03:45:00,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:45:00,893 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:45:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:45:00,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-19 03:45:00,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:45:00,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412255242] [2020-08-19 03:45:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:45:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,077 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:45:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:45:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:45:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:45:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:45:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:45:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:45:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:45:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:45:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:45:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:45:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 03:45:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:45:01,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412255242] [2020-08-19 03:45:01,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:45:01,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:45:01,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925944295] [2020-08-19 03:45:01,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:45:01,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:45:01,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:45:01,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:45:01,399 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-19 03:45:02,884 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 03:45:03,028 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-19 03:45:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:45:03,821 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-19 03:45:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:45:03,822 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-19 03:45:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:45:03,827 INFO L225 Difference]: With dead ends: 1739 [2020-08-19 03:45:03,827 INFO L226 Difference]: Without dead ends: 966 [2020-08-19 03:45:03,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:45:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-19 03:45:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-19 03:45:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-19 03:45:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-19 03:45:03,929 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-19 03:45:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:45:03,929 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-19 03:45:03,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:45:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-19 03:45:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-19 03:45:03,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:45:03,932 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] [2020-08-19 03:45:03,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:45:03,933 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:45:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:45:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-19 03:45:03,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:45:03,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56624603] [2020-08-19 03:45:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:45:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,131 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:45:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:45:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:45:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:45:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:45:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:45:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:45:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:45:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:45:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:45:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:45:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 03:45:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:45:04,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56624603] [2020-08-19 03:45:04,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:45:04,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-19 03:45:04,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730665271] [2020-08-19 03:45:04,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 03:45:04,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:45:04,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 03:45:04,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:45:04,529 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-19 03:45:04,827 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-19 03:45:04,974 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 03:45:05,424 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 03:45:06,946 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:45:07,106 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:45:07,264 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-19 03:45:08,863 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-19 03:45:09,011 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-19 03:45:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:45:11,411 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-19 03:45:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 03:45:11,412 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-19 03:45:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:45:11,432 INFO L225 Difference]: With dead ends: 2593 [2020-08-19 03:45:11,432 INFO L226 Difference]: Without dead ends: 1792 [2020-08-19 03:45:11,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-19 03:45:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-19 03:45:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-19 03:45:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-19 03:45:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-19 03:45:11,775 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-19 03:45:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:45:11,779 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-19 03:45:11,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 03:45:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-19 03:45:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 03:45:11,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:45:11,783 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] [2020-08-19 03:45:11,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:45:11,783 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:45:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:45:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-19 03:45:11,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:45:11,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228564004] [2020-08-19 03:45:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:45:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,107 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-19 03:45:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:45:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:45:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:45:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:45:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:45:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 03:45:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:45:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:45:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:45:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:45:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:45:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 03:45:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 03:45:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:45:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 03:45:12,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228564004] [2020-08-19 03:45:12,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:45:12,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:45:12,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960129493] [2020-08-19 03:45:12,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:45:12,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:45:12,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:45:12,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:45:12,438 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states.