/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 23:57:07,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:57:07,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:57:08,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:57:08,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:57:08,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:57:08,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:57:08,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:57:08,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:57:08,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:57:08,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:57:08,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:57:08,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:57:08,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:57:08,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:57:08,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:57:08,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:57:08,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:57:08,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:57:08,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:57:08,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:57:08,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:57:08,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:57:08,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:57:08,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:57:08,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:57:08,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:57:08,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:57:08,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:57:08,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:57:08,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:57:08,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:57:08,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:57:08,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:57:08,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:57:08,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:57:08,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:57:08,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:57:08,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:57:08,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:57:08,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:57:08,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:57:08,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:57:08,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:57:08,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:57:08,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:57:08,066 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:57:08,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:57:08,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:57:08,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:57:08,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:57:08,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:57:08,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:57:08,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:57:08,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:57:08,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:57:08,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:57:08,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:57:08,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:57:08,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:57:08,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:57:08,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:57:08,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:57:08,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:57:08,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:57:08,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:57:08,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:57:08,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:57:08,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:57:08,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:57:08,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:57:08,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:57:08,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:57:08,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:57:08,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:57:08,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:57:08,420 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:57:08,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-21 23:57:08,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10f372c3f/77557ad463e6453295b86613605e1eb0/FLAGa358373e6 [2020-08-21 23:57:09,007 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:57:09,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-21 23:57:09,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10f372c3f/77557ad463e6453295b86613605e1eb0/FLAGa358373e6 [2020-08-21 23:57:09,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10f372c3f/77557ad463e6453295b86613605e1eb0 [2020-08-21 23:57:09,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:57:09,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:57:09,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:57:09,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:57:09,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:57:09,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:09,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71155234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09, skipping insertion in model container [2020-08-21 23:57:09,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:09,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:57:09,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:57:09,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:57:09,727 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:57:09,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:57:09,947 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:57:09,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09 WrapperNode [2020-08-21 23:57:09,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:57:09,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:57:09,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:57:09,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:57:09,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:09,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:09,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:09,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:09,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:10,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:10,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... [2020-08-21 23:57:10,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:57:10,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:57:10,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:57:10,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:57:10,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:57:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:57:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:57:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:57:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-21 23:57:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-21 23:57:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-21 23:57:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-21 23:57:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-21 23:57:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-21 23:57:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-21 23:57:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-21 23:57:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-21 23:57:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-21 23:57:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-21 23:57:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-21 23:57:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-21 23:57:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-21 23:57:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 23:57:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:57:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-21 23:57:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:57:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 23:57:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 23:57:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 23:57:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 23:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 23:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-21 23:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-21 23:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-21 23:57:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-21 23:57:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-21 23:57:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-21 23:57:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-21 23:57:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-21 23:57:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 23:57:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-21 23:57:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-21 23:57:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-21 23:57:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-21 23:57:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-21 23:57:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 23:57:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:57:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:57:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:57:10,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:57:10,958 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 23:57:10,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:57:10 BoogieIcfgContainer [2020-08-21 23:57:10,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:57:10,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:57:10,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:57:10,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:57:10,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:57:09" (1/3) ... [2020-08-21 23:57:10,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13edab47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:57:10, skipping insertion in model container [2020-08-21 23:57:10,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:57:09" (2/3) ... [2020-08-21 23:57:10,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13edab47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:57:10, skipping insertion in model container [2020-08-21 23:57:10,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:57:10" (3/3) ... [2020-08-21 23:57:10,973 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-21 23:57:10,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:57:10,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:57:11,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:57:11,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:57:11,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:57:11,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:57:11,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:57:11,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:57:11,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:57:11,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:57:11,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:57:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-21 23:57:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 23:57:11,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:11,065 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] [2020-08-21 23:57:11,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:11,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-21 23:57:11,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:11,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848982246] [2020-08-21 23:57:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,648 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:11,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:57:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:57:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:57:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:57:11,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848982246] [2020-08-21 23:57:11,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:11,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:57:11,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232886935] [2020-08-21 23:57:11,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:57:11,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:11,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:57:11,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:57:11,931 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-21 23:57:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:13,583 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-21 23:57:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:57:13,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-21 23:57:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:13,603 INFO L225 Difference]: With dead ends: 456 [2020-08-21 23:57:13,603 INFO L226 Difference]: Without dead ends: 237 [2020-08-21 23:57:13,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:57:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-21 23:57:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-21 23:57:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-21 23:57:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-21 23:57:13,717 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-21 23:57:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:13,718 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-21 23:57:13,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:57:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-21 23:57:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 23:57:13,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:13,722 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] [2020-08-21 23:57:13,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:57:13,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:13,723 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-21 23:57:13,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:13,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883636707] [2020-08-21 23:57:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:13,926 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:13,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:57:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:57:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:57:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:57:14,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883636707] [2020-08-21 23:57:14,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:14,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 23:57:14,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239898408] [2020-08-21 23:57:14,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 23:57:14,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:14,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 23:57:14,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:57:14,221 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-21 23:57:14,406 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:14,635 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 23:57:14,807 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 23:57:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:17,286 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-21 23:57:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:57:17,291 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-21 23:57:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:17,295 INFO L225 Difference]: With dead ends: 455 [2020-08-21 23:57:17,295 INFO L226 Difference]: Without dead ends: 237 [2020-08-21 23:57:17,297 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 [2020-08-21 23:57:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-21 23:57:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-21 23:57:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-21 23:57:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-21 23:57:17,333 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-21 23:57:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:17,333 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-21 23:57:17,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 23:57:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-21 23:57:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 23:57:17,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:17,336 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] [2020-08-21 23:57:17,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:57:17,337 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:17,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-21 23:57:17,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:17,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292427180] [2020-08-21 23:57:17,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,616 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:17,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:57:17,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292427180] [2020-08-21 23:57:17,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:17,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 23:57:17,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885353668] [2020-08-21 23:57:17,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:57:17,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:17,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:57:17,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:57:17,822 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-21 23:57:18,662 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 23:57:18,798 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 23:57:19,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:19,926 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-21 23:57:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:57:19,927 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-21 23:57:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:19,931 INFO L225 Difference]: With dead ends: 454 [2020-08-21 23:57:19,931 INFO L226 Difference]: Without dead ends: 241 [2020-08-21 23:57:19,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:57:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-21 23:57:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-21 23:57:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-21 23:57:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-21 23:57:19,967 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-21 23:57:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:19,968 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-21 23:57:19,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:57:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-21 23:57:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 23:57:19,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:19,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:57:19,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:57:19,971 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-21 23:57:19,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:19,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707477794] [2020-08-21 23:57:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,208 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:20,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 23:57:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 23:57:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:20,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707477794] [2020-08-21 23:57:20,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:20,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 23:57:20,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378963411] [2020-08-21 23:57:20,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:57:20,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:57:20,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:57:20,552 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-21 23:57:20,730 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 23:57:22,669 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:24,462 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-21 23:57:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 23:57:24,462 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-21 23:57:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:24,468 INFO L225 Difference]: With dead ends: 549 [2020-08-21 23:57:24,468 INFO L226 Difference]: Without dead ends: 332 [2020-08-21 23:57:24,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 23:57:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-21 23:57:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-21 23:57:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-21 23:57:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-21 23:57:24,519 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-21 23:57:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:24,520 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-21 23:57:24,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:57:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-21 23:57:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 23:57:24,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:24,523 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] [2020-08-21 23:57:24,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:57:24,523 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-21 23:57:24,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:24,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793649412] [2020-08-21 23:57:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,731 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:57:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 23:57:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:25,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793649412] [2020-08-21 23:57:25,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:25,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 23:57:25,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473213632] [2020-08-21 23:57:25,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:57:25,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:25,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:57:25,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:57:25,060 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-21 23:57:25,241 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 23:57:26,996 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:28,719 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-21 23:57:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 23:57:28,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-21 23:57:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:28,723 INFO L225 Difference]: With dead ends: 555 [2020-08-21 23:57:28,723 INFO L226 Difference]: Without dead ends: 335 [2020-08-21 23:57:28,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 23:57:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-21 23:57:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-21 23:57:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-21 23:57:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-21 23:57:28,760 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-21 23:57:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:28,761 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-21 23:57:28,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:57:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-21 23:57:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 23:57:28,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:28,763 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] [2020-08-21 23:57:28,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:57:28,764 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:28,764 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-21 23:57:28,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:28,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927915583] [2020-08-21 23:57:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:28,975 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:28,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 23:57:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:29,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927915583] [2020-08-21 23:57:29,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:29,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:57:29,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825044984] [2020-08-21 23:57:29,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:57:29,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:29,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:57:29,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:57:29,223 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-21 23:57:30,095 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 23:57:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:32,713 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-21 23:57:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 23:57:32,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-21 23:57:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:32,721 INFO L225 Difference]: With dead ends: 788 [2020-08-21 23:57:32,721 INFO L226 Difference]: Without dead ends: 568 [2020-08-21 23:57:32,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 23:57:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-21 23:57:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-21 23:57:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-21 23:57:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-21 23:57:32,814 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-21 23:57:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:32,814 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-21 23:57:32,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:57:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-21 23:57:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 23:57:32,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:32,817 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] [2020-08-21 23:57:32,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:57:32,817 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-21 23:57:32,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:32,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449174196] [2020-08-21 23:57:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:32,991 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:57:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:33,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449174196] [2020-08-21 23:57:33,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:33,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:57:33,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742368143] [2020-08-21 23:57:33,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:57:33,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:33,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:57:33,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:57:33,264 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-21 23:57:34,319 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 23:57:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:37,197 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-21 23:57:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 23:57:37,199 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-21 23:57:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:37,205 INFO L225 Difference]: With dead ends: 1308 [2020-08-21 23:57:37,205 INFO L226 Difference]: Without dead ends: 911 [2020-08-21 23:57:37,208 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 [2020-08-21 23:57:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-21 23:57:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-21 23:57:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-21 23:57:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-21 23:57:37,322 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-21 23:57:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:37,323 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-21 23:57:37,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:57:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-21 23:57:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 23:57:37,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:37,325 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] [2020-08-21 23:57:37,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:57:37,326 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:37,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-21 23:57:37,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:37,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563187256] [2020-08-21 23:57:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,505 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 23:57:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 23:57:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:37,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563187256] [2020-08-21 23:57:37,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:37,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:57:37,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703306695] [2020-08-21 23:57:37,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:57:37,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:57:37,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:57:37,757 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-21 23:57:37,930 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:41,385 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-21 23:57:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 23:57:41,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 23:57:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:41,393 INFO L225 Difference]: With dead ends: 1649 [2020-08-21 23:57:41,393 INFO L226 Difference]: Without dead ends: 916 [2020-08-21 23:57:41,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 23:57:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-21 23:57:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-21 23:57:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-21 23:57:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-21 23:57:41,507 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-21 23:57:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:41,507 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-21 23:57:41,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:57:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-21 23:57:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 23:57:41,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:41,510 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] [2020-08-21 23:57:41,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:57:41,511 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-21 23:57:41,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:41,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239890685] [2020-08-21 23:57:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,744 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:57:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:41,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239890685] [2020-08-21 23:57:41,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:41,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 23:57:41,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037625340] [2020-08-21 23:57:41,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:57:41,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:57:41,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:57:41,972 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-21 23:57:43,378 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 23:57:43,513 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 23:57:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:44,534 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-21 23:57:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:57:44,535 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-21 23:57:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:44,543 INFO L225 Difference]: With dead ends: 1663 [2020-08-21 23:57:44,544 INFO L226 Difference]: Without dead ends: 930 [2020-08-21 23:57:44,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:57:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-21 23:57:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-21 23:57:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-21 23:57:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-21 23:57:44,678 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-21 23:57:44,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:44,679 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-21 23:57:44,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:57:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-21 23:57:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 23:57:44,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:44,684 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] [2020-08-21 23:57:44,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:57:44,684 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-21 23:57:44,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:44,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871987392] [2020-08-21 23:57:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:44,893 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 23:57:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 23:57:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 23:57:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 23:57:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:45,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871987392] [2020-08-21 23:57:45,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:45,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:57:45,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357010846] [2020-08-21 23:57:45,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:57:45,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:45,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:57:45,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:57:45,138 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-21 23:57:45,345 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:48,846 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-21 23:57:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 23:57:48,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-21 23:57:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:48,853 INFO L225 Difference]: With dead ends: 1715 [2020-08-21 23:57:48,853 INFO L226 Difference]: Without dead ends: 962 [2020-08-21 23:57:48,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 23:57:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-21 23:57:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-21 23:57:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-21 23:57:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-21 23:57:48,958 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-21 23:57:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:48,959 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-21 23:57:48,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:57:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-21 23:57:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 23:57:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:48,962 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] [2020-08-21 23:57:48,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:57:48,962 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-21 23:57:48,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:48,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377699777] [2020-08-21 23:57:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,194 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:49,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:57:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:57:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:49,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377699777] [2020-08-21 23:57:49,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:49,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 23:57:49,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330378376] [2020-08-21 23:57:49,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:57:49,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:49,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:57:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:57:49,417 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-21 23:57:50,871 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 23:57:51,012 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 23:57:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:51,924 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-21 23:57:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:57:51,925 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-21 23:57:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:51,932 INFO L225 Difference]: With dead ends: 1703 [2020-08-21 23:57:51,932 INFO L226 Difference]: Without dead ends: 950 [2020-08-21 23:57:51,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:57:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-21 23:57:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-21 23:57:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-21 23:57:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-21 23:57:52,038 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-21 23:57:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:52,039 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-21 23:57:52,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:57:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-21 23:57:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 23:57:52,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:52,042 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] [2020-08-21 23:57:52,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:57:52,042 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-21 23:57:52,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:52,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212910164] [2020-08-21 23:57:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,231 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:57:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:57:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 23:57:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:52,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212910164] [2020-08-21 23:57:52,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:52,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 23:57:52,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311474748] [2020-08-21 23:57:52,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:57:52,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:52,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:57:52,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:57:52,518 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-21 23:57:53,981 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 23:57:54,118 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 23:57:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:57:54,834 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-21 23:57:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:57:54,835 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-21 23:57:54,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:57:54,841 INFO L225 Difference]: With dead ends: 1739 [2020-08-21 23:57:54,841 INFO L226 Difference]: Without dead ends: 966 [2020-08-21 23:57:54,845 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 [2020-08-21 23:57:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-21 23:57:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-21 23:57:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-21 23:57:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-21 23:57:54,951 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-21 23:57:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:57:54,951 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-21 23:57:54,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:57:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-21 23:57:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 23:57:54,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:57:54,954 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] [2020-08-21 23:57:54,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:57:54,954 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:57:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:57:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-21 23:57:54,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:57:54,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822518053] [2020-08-21 23:57:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:57:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,144 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:57:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:57:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:57:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:57:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:57:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:57:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:57:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:57:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:57:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:57:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:57:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:57:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 23:57:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:57:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 23:57:55,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822518053] [2020-08-21 23:57:55,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:57:55,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-21 23:57:55,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693267827] [2020-08-21 23:57:55,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 23:57:55,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:57:55,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 23:57:55,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:57:55,539 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-21 23:57:55,844 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-21 23:57:56,009 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 23:57:56,424 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 23:57:57,852 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:58,002 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:58,140 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 23:57:59,736 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 23:57:59,883 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 23:58:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:58:02,273 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-21 23:58:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 23:58:02,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-21 23:58:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:58:02,296 INFO L225 Difference]: With dead ends: 2593 [2020-08-21 23:58:02,296 INFO L226 Difference]: Without dead ends: 1792 [2020-08-21 23:58:02,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 23:58:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-21 23:58:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-21 23:58:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-21 23:58:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-21 23:58:02,602 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-21 23:58:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:58:02,603 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-21 23:58:02,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 23:58:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-21 23:58:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 23:58:02,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:58:02,607 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] [2020-08-21 23:58:02,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 23:58:02,607 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:58:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:58:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-21 23:58:02,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:58:02,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298058609] [2020-08-21 23:58:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:58:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:02,897 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 23:58:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:58:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:58:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:58:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:58:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:58:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:58:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:58:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:58:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:58:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 23:58:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:58:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 23:58:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:58:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:58:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 23:58:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 23:58:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:58:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 23:58:03,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298058609] [2020-08-21 23:58:03,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:58:03,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 23:58:03,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327601833] [2020-08-21 23:58:03,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:58:03,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:58:03,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:58:03,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:58:03,228 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states. [2020-08-21 23:58:05,394 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 133