/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 13:06:10,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:06:10,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:06:10,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:06:10,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:06:10,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:06:10,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:06:10,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:06:10,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:06:10,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:06:10,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:06:10,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:06:10,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:06:10,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:06:10,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:06:10,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:06:10,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:06:10,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:06:10,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:06:10,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:06:10,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:06:10,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:06:10,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:06:10,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:06:10,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:06:10,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:06:10,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:06:10,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:06:10,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:06:10,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 13:06:10,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 13:06:10,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 13:06:10,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 13:06:10,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 13:06:10,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 13:06:10,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 13:06:10,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 13:06:10,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 13:06:10,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:06:10,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:06:10,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:06:10,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 13:06:10,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:06:10,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:06:10,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:06:10,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:06:10,153 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:06:10,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:06:10,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 13:06:10,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:06:10,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 13:06:10,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:06:10,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:06:10,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:06:10,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:06:10,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 13:06:10,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:06:10,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:06:10,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:06:10,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:06:10,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:06:10,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:06:10,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:06:10,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:06:10,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:06:10,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:06:10,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:06:10,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:06:10,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:06:10,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:06:10,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:06:10,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:06:10,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:06:10,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:06:10,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:06:10,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:06:10,465 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:06:10,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-18 13:06:10,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ab96e3f/7306ffc999654d8693fe8fc5d43d2d53/FLAG9a9ddfdf1 [2020-08-18 13:06:11,016 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:06:11,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-18 13:06:11,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ab96e3f/7306ffc999654d8693fe8fc5d43d2d53/FLAG9a9ddfdf1 [2020-08-18 13:06:11,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ab96e3f/7306ffc999654d8693fe8fc5d43d2d53 [2020-08-18 13:06:11,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:06:11,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:06:11,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:11,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:06:11,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:06:11,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:11,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11, skipping insertion in model container [2020-08-18 13:06:11,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:11,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:06:11,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:06:11,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:06:11,858 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:06:11,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:06:11,949 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:06:11,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11 WrapperNode [2020-08-18 13:06:11,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:06:11,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:06:11,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:06:11,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:06:11,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:11,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:11,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:11,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:12,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:12,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:12,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... [2020-08-18 13:06:12,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:06:12,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:06:12,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:06:12,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:06:12,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:06:12,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:06:12,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:06:12,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 13:06:12,105 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-18 13:06:12,105 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-18 13:06:12,106 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-18 13:06:12,106 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-18 13:06:12,106 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-18 13:06:12,106 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-18 13:06:12,106 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-18 13:06:12,107 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-18 13:06:12,107 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-18 13:06:12,108 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-18 13:06:12,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-18 13:06:12,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-18 13:06:12,109 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-18 13:06:12,109 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-18 13:06:12,109 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 13:06:12,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:06:12,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-18 13:06:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:06:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 13:06:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 13:06:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 13:06:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 13:06:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 13:06:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 13:06:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 13:06:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-18 13:06:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-18 13:06:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-18 13:06:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-18 13:06:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-18 13:06:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-18 13:06:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-18 13:06:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-18 13:06:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 13:06:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-18 13:06:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-18 13:06:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-18 13:06:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-18 13:06:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-18 13:06:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 13:06:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:06:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:06:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:06:12,946 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:06:12,946 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 13:06:12,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:06:12 BoogieIcfgContainer [2020-08-18 13:06:12,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:06:12,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:06:12,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:06:12,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:06:12,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:06:11" (1/3) ... [2020-08-18 13:06:12,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770be6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:06:12, skipping insertion in model container [2020-08-18 13:06:12,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:06:11" (2/3) ... [2020-08-18 13:06:12,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770be6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:06:12, skipping insertion in model container [2020-08-18 13:06:12,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:06:12" (3/3) ... [2020-08-18 13:06:12,961 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-18 13:06:12,972 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:06:12,980 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:06:12,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:06:13,018 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:06:13,019 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:06:13,019 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:06:13,019 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:06:13,019 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:06:13,020 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:06:13,020 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:06:13,020 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:06:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-18 13:06:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 13:06:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:13,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:13,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:13,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-18 13:06:13,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:13,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457889121] [2020-08-18 13:06:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,567 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 13:06:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 13:06:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 13:06:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:13,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457889121] [2020-08-18 13:06:13,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:13,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:06:13,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132263808] [2020-08-18 13:06:13,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:06:13,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:13,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:06:13,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:06:13,861 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-18 13:06:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:15,428 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-18 13:06:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:06:15,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-18 13:06:15,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:15,455 INFO L225 Difference]: With dead ends: 456 [2020-08-18 13:06:15,455 INFO L226 Difference]: Without dead ends: 237 [2020-08-18 13:06:15,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-18 13:06:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-18 13:06:15,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-18 13:06:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 13:06:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-18 13:06:15,547 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-18 13:06:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:15,547 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-18 13:06:15,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:06:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-18 13:06:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 13:06:15,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:15,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:15,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:06:15,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:15,553 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-18 13:06:15,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:15,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043380211] [2020-08-18 13:06:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,799 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 13:06:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 13:06:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 13:06:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:16,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043380211] [2020-08-18 13:06:16,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:16,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 13:06:16,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142418968] [2020-08-18 13:06:16,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 13:06:16,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:16,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 13:06:16,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 13:06:16,090 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-18 13:06:16,279 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:16,541 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 13:06:16,674 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 13:06:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:18,990 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-18 13:06:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 13:06:18,991 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-18 13:06:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:19,000 INFO L225 Difference]: With dead ends: 455 [2020-08-18 13:06:19,000 INFO L226 Difference]: Without dead ends: 237 [2020-08-18 13:06:19,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 13:06:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-18 13:06:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-18 13:06:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 13:06:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-18 13:06:19,068 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-18 13:06:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:19,068 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-18 13:06:19,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 13:06:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-18 13:06:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 13:06:19,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:19,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:19,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:06:19,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:19,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-18 13:06:19,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:19,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412431009] [2020-08-18 13:06:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,344 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:06:19,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412431009] [2020-08-18 13:06:19,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:19,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 13:06:19,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439717507] [2020-08-18 13:06:19,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 13:06:19,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:19,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 13:06:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 13:06:19,585 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-18 13:06:20,375 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 13:06:20,512 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:21,625 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-18 13:06:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 13:06:21,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-18 13:06:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:21,632 INFO L225 Difference]: With dead ends: 454 [2020-08-18 13:06:21,632 INFO L226 Difference]: Without dead ends: 241 [2020-08-18 13:06:21,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-18 13:06:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-18 13:06:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-18 13:06:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-18 13:06:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-18 13:06:21,676 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-18 13:06:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:21,677 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-18 13:06:21,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 13:06:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-18 13:06:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 13:06:21,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:21,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:21,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:06:21,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-18 13:06:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:21,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503271257] [2020-08-18 13:06:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,903 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:21,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 13:06:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 13:06:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:22,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503271257] [2020-08-18 13:06:22,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:22,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 13:06:22,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531711466] [2020-08-18 13:06:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 13:06:22,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 13:06:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 13:06:22,213 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-18 13:06:22,386 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 13:06:24,213 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:26,080 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-18 13:06:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 13:06:26,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-18 13:06:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:26,086 INFO L225 Difference]: With dead ends: 549 [2020-08-18 13:06:26,087 INFO L226 Difference]: Without dead ends: 332 [2020-08-18 13:06:26,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 13:06:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-18 13:06:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-18 13:06:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 13:06:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-18 13:06:26,138 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-18 13:06:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:26,139 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-18 13:06:26,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 13:06:26,139 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-18 13:06:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-18 13:06:26,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:26,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:26,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:06:26,142 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-18 13:06:26,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:26,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230159242] [2020-08-18 13:06:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,387 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 13:06:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 13:06:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:26,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230159242] [2020-08-18 13:06:26,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:26,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 13:06:26,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6565382] [2020-08-18 13:06:26,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 13:06:26,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:26,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 13:06:26,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-18 13:06:26,707 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-18 13:06:26,891 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-18 13:06:28,638 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:30,510 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-18 13:06:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 13:06:30,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-18 13:06:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:30,515 INFO L225 Difference]: With dead ends: 555 [2020-08-18 13:06:30,515 INFO L226 Difference]: Without dead ends: 335 [2020-08-18 13:06:30,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 13:06:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-18 13:06:30,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-18 13:06:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 13:06:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-18 13:06:30,566 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-18 13:06:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:30,566 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-18 13:06:30,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 13:06:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-18 13:06:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 13:06:30,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:30,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:30,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:06:30,569 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-18 13:06:30,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:30,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136122744] [2020-08-18 13:06:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,755 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 13:06:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:31,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136122744] [2020-08-18 13:06:31,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:31,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 13:06:31,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688840996] [2020-08-18 13:06:31,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:06:31,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:31,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:06:31,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:06:31,044 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-18 13:06:31,823 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:34,605 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-18 13:06:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 13:06:34,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-18 13:06:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:34,611 INFO L225 Difference]: With dead ends: 788 [2020-08-18 13:06:34,612 INFO L226 Difference]: Without dead ends: 568 [2020-08-18 13:06:34,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 13:06:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-18 13:06:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-18 13:06:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-18 13:06:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-18 13:06:34,677 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-18 13:06:34,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:34,678 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-18 13:06:34,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:06:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-18 13:06:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 13:06:34,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:34,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:34,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:06:34,681 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-18 13:06:34,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:34,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621477301] [2020-08-18 13:06:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,855 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 13:06:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:35,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621477301] [2020-08-18 13:06:35,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:35,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 13:06:35,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104307285] [2020-08-18 13:06:35,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:06:35,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:35,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:06:35,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:06:35,190 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-18 13:06:36,283 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:38,728 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-18 13:06:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 13:06:38,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-18 13:06:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:38,743 INFO L225 Difference]: With dead ends: 1308 [2020-08-18 13:06:38,743 INFO L226 Difference]: Without dead ends: 911 [2020-08-18 13:06:38,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 13:06:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-18 13:06:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-18 13:06:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-18 13:06:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-18 13:06:38,862 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-18 13:06:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:38,862 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-18 13:06:38,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:06:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-18 13:06:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 13:06:38,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:38,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:38,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:06:38,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:38,866 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-18 13:06:38,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:38,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139280627] [2020-08-18 13:06:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,048 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:39,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 13:06:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 13:06:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:39,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139280627] [2020-08-18 13:06:39,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:39,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 13:06:39,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357539034] [2020-08-18 13:06:39,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:06:39,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:39,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:06:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:06:39,339 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-18 13:06:39,526 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:42,818 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-18 13:06:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 13:06:42,819 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 13:06:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:42,826 INFO L225 Difference]: With dead ends: 1649 [2020-08-18 13:06:42,826 INFO L226 Difference]: Without dead ends: 916 [2020-08-18 13:06:42,830 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 [2020-08-18 13:06:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-18 13:06:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-18 13:06:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-18 13:06:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-18 13:06:42,934 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-18 13:06:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:42,935 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-18 13:06:42,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:06:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-18 13:06:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 13:06:42,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:42,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:42,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 13:06:42,938 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:42,938 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-18 13:06:42,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:42,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221422058] [2020-08-18 13:06:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,132 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 13:06:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:43,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221422058] [2020-08-18 13:06:43,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:43,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 13:06:43,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027691188] [2020-08-18 13:06:43,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 13:06:43,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:43,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 13:06:43,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:06:43,413 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-18 13:06:44,760 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 13:06:44,892 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:45,854 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-18 13:06:45,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:06:45,858 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-18 13:06:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:45,864 INFO L225 Difference]: With dead ends: 1663 [2020-08-18 13:06:45,864 INFO L226 Difference]: Without dead ends: 930 [2020-08-18 13:06:45,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 13:06:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-18 13:06:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-18 13:06:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-18 13:06:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-18 13:06:45,969 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-18 13:06:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:45,970 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-18 13:06:45,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 13:06:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-18 13:06:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-18 13:06:45,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:45,975 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] [2020-08-18 13:06:45,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 13:06:45,975 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:45,976 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-18 13:06:45,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:45,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727375192] [2020-08-18 13:06:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,170 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 13:06:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 13:06:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 13:06:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:06:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:46,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727375192] [2020-08-18 13:06:46,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:46,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 13:06:46,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849252144] [2020-08-18 13:06:46,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:06:46,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:46,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:06:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:06:46,514 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-18 13:06:46,726 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:50,293 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-18 13:06:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 13:06:50,294 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-18 13:06:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:50,301 INFO L225 Difference]: With dead ends: 1715 [2020-08-18 13:06:50,301 INFO L226 Difference]: Without dead ends: 962 [2020-08-18 13:06:50,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-18 13:06:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-18 13:06:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-18 13:06:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-18 13:06:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-18 13:06:50,408 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-18 13:06:50,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:50,409 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-18 13:06:50,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:06:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-18 13:06:50,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 13:06:50,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:50,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:50,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 13:06:50,417 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:50,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:50,417 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-18 13:06:50,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:50,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452306389] [2020-08-18 13:06:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,711 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 13:06:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 13:06:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:50,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452306389] [2020-08-18 13:06:50,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:50,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 13:06:50,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513843462] [2020-08-18 13:06:50,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 13:06:50,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:50,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 13:06:50,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:06:50,927 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-18 13:06:52,310 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 13:06:52,445 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:53,386 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-18 13:06:53,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:06:53,387 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-18 13:06:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:53,393 INFO L225 Difference]: With dead ends: 1703 [2020-08-18 13:06:53,393 INFO L226 Difference]: Without dead ends: 950 [2020-08-18 13:06:53,396 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 [2020-08-18 13:06:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-18 13:06:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-18 13:06:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-18 13:06:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-18 13:06:53,490 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-18 13:06:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:53,491 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-18 13:06:53,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 13:06:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-18 13:06:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 13:06:53,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:53,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:53,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 13:06:53,494 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-18 13:06:53,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:53,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982258006] [2020-08-18 13:06:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,661 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:06:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 13:06:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 13:06:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 13:06:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:53,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982258006] [2020-08-18 13:06:53,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:53,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 13:06:53,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407186326] [2020-08-18 13:06:53,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 13:06:53,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 13:06:53,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:06:53,906 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-18 13:06:55,409 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 13:06:55,545 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-18 13:06:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:06:56,241 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-18 13:06:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:06:56,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-18 13:06:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:06:56,248 INFO L225 Difference]: With dead ends: 1739 [2020-08-18 13:06:56,248 INFO L226 Difference]: Without dead ends: 966 [2020-08-18 13:06:56,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-18 13:06:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-18 13:06:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-18 13:06:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-18 13:06:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-18 13:06:56,361 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-18 13:06:56,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:06:56,362 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-18 13:06:56,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 13:06:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-18 13:06:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 13:06:56,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:06:56,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:06:56,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 13:06:56,364 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:06:56,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:06:56,365 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-18 13:06:56,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:06:56,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223883903] [2020-08-18 13:06:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:06:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:06:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:06:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:06:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:06:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:06:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:06:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:06:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:06:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:06:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 13:06:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 13:06:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 13:06:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:06:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 13:06:56,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223883903] [2020-08-18 13:06:56,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:06:56,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-18 13:06:56,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308866918] [2020-08-18 13:06:56,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 13:06:56,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:06:56,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 13:06:56,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-18 13:06:56,879 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-18 13:06:57,194 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-18 13:06:57,354 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 13:06:57,752 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 13:06:59,181 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:59,336 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:06:59,480 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-18 13:07:01,041 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-18 13:07:01,195 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-18 13:07:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:07:03,674 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-18 13:07:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 13:07:03,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-18 13:07:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:07:03,691 INFO L225 Difference]: With dead ends: 2593 [2020-08-18 13:07:03,691 INFO L226 Difference]: Without dead ends: 1792 [2020-08-18 13:07:03,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 13:07:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-18 13:07:03,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-18 13:07:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-18 13:07:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-18 13:07:03,972 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-18 13:07:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:07:03,972 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-18 13:07:03,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 13:07:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-18 13:07:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 13:07:03,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:07:03,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:07:03,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 13:07:03,976 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:07:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:07:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-18 13:07:03,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:07:03,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528611680] [2020-08-18 13:07:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:07:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,279 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-18 13:07:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:07:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:07:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:07:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:07:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:07:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 13:07:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:07:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 13:07:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:07:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 13:07:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:07:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:07:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 13:07:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 13:07:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 13:07:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 13:07:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:07:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 13:07:04,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528611680] [2020-08-18 13:07:04,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:07:04,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 13:07:04,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423257645] [2020-08-18 13:07:04,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 13:07:04,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:07:04,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 13:07:04,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:07:04,613 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states. [2020-08-18 13:07:06,065 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91