./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:37:43,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:37:43,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:37:43,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:37:43,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:37:43,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:37:43,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:37:43,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:37:43,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:37:43,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:37:43,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:37:43,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:37:43,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:37:43,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:37:43,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:37:43,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:37:43,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:37:43,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:37:43,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:37:43,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:37:43,234 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:37:43,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:37:43,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:37:43,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:37:43,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:37:43,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:37:43,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:37:43,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:37:43,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:37:43,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:37:43,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:37:43,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:37:43,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:37:43,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:37:43,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:37:43,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:37:43,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:37:43,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:37:43,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:37:43,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:37:43,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:37:43,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:37:43,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:37:43,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:37:43,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:37:43,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:37:43,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:37:43,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:37:43,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:37:43,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:37:43,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:37:43,273 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:37:43,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:37:43,274 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:37:43,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:37:43,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:37:43,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:37:43,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:37:43,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:37:43,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:37:43,275 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:37:43,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:37:43,275 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:37:43,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:37:43,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:37:43,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:37:43,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:37:43,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:37:43,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:37:43,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:37:43,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:37:43,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:37:43,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:37:43,277 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:37:43,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:37:43,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:37:43,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2022-07-12 06:37:43,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:37:43,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:37:43,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:37:43,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:37:43,478 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:37:43,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-07-12 06:37:43,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae3af768/27f2f9af260542ad931d54debd41ea2c/FLAGd6f319c7c [2022-07-12 06:37:43,919 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:37:43,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-07-12 06:37:43,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae3af768/27f2f9af260542ad931d54debd41ea2c/FLAGd6f319c7c [2022-07-12 06:37:43,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae3af768/27f2f9af260542ad931d54debd41ea2c [2022-07-12 06:37:43,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:37:43,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:37:43,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:37:43,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:37:43,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:37:43,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:37:43" (1/1) ... [2022-07-12 06:37:43,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d3ab12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:43, skipping insertion in model container [2022-07-12 06:37:43,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:37:43" (1/1) ... [2022-07-12 06:37:43,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:37:43,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:37:44,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-07-12 06:37:44,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:37:44,206 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:37:44,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-07-12 06:37:44,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:37:44,292 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:37:44,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44 WrapperNode [2022-07-12 06:37:44,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:37:44,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:37:44,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:37:44,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:37:44,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,357 INFO L137 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 536 [2022-07-12 06:37:44,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:37:44,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:37:44,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:37:44,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:37:44,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:37:44,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:37:44,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:37:44,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:37:44,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (1/1) ... [2022-07-12 06:37:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:37:44,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:37:44,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:37:44,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:37:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-07-12 06:37:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-07-12 06:37:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:37:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-07-12 06:37:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-07-12 06:37:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-12 06:37:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-12 06:37:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 06:37:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 06:37:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:37:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-07-12 06:37:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-07-12 06:37:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:37:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:37:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-07-12 06:37:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-07-12 06:37:44,563 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:37:44,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:37:44,949 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:37:44,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:37:44,956 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:37:44,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:37:44 BoogieIcfgContainer [2022-07-12 06:37:44,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:37:44,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:37:44,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:37:44,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:37:44,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:37:43" (1/3) ... [2022-07-12 06:37:44,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512031c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:37:44, skipping insertion in model container [2022-07-12 06:37:44,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:37:44" (2/3) ... [2022-07-12 06:37:44,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512031c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:37:44, skipping insertion in model container [2022-07-12 06:37:44,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:37:44" (3/3) ... [2022-07-12 06:37:44,964 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-07-12 06:37:44,973 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:37:44,973 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:37:45,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:37:45,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41d508a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@af6cebd [2022-07-12 06:37:45,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:37:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 164 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-12 06:37:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 06:37:45,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:45,084 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:45,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 11515241, now seen corresponding path program 1 times [2022-07-12 06:37:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:45,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146515237] [2022-07-12 06:37:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:37:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:37:45,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:45,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146515237] [2022-07-12 06:37:45,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146515237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:45,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:45,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:37:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495410536] [2022-07-12 06:37:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:45,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:37:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:37:45,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:37:45,314 INFO L87 Difference]: Start difference. First operand has 199 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 164 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:37:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:45,368 INFO L93 Difference]: Finished difference Result 378 states and 619 transitions. [2022-07-12 06:37:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:37:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-12 06:37:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:45,381 INFO L225 Difference]: With dead ends: 378 [2022-07-12 06:37:45,381 INFO L226 Difference]: Without dead ends: 195 [2022-07-12 06:37:45,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:37:45,389 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:45,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-12 06:37:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-12 06:37:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.509433962264151) internal successors, (240), 160 states have internal predecessors, (240), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-12 06:37:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 298 transitions. [2022-07-12 06:37:45,428 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 298 transitions. Word has length 44 [2022-07-12 06:37:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 298 transitions. [2022-07-12 06:37:45,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:37:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 298 transitions. [2022-07-12 06:37:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 06:37:45,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:45,431 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:45,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:37:45,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:45,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:45,432 INFO L85 PathProgramCache]: Analyzing trace with hash -419952089, now seen corresponding path program 1 times [2022-07-12 06:37:45,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:45,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133188372] [2022-07-12 06:37:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:37:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:37:45,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:45,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133188372] [2022-07-12 06:37:45,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133188372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:45,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:45,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:37:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972139427] [2022-07-12 06:37:45,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:45,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:37:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:37:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:37:45,524 INFO L87 Difference]: Start difference. First operand 195 states and 298 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:37:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:45,605 INFO L93 Difference]: Finished difference Result 376 states and 570 transitions. [2022-07-12 06:37:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:37:45,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-12 06:37:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:45,607 INFO L225 Difference]: With dead ends: 376 [2022-07-12 06:37:45,607 INFO L226 Difference]: Without dead ends: 195 [2022-07-12 06:37:45,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:37:45,609 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 171 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:45,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1253 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-12 06:37:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-12 06:37:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.4339622641509433) internal successors, (228), 160 states have internal predecessors, (228), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-12 06:37:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 286 transitions. [2022-07-12 06:37:45,621 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 286 transitions. Word has length 44 [2022-07-12 06:37:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:45,625 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 286 transitions. [2022-07-12 06:37:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:37:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 286 transitions. [2022-07-12 06:37:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 06:37:45,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:45,627 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:45,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:37:45,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -752782365, now seen corresponding path program 1 times [2022-07-12 06:37:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:45,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185570114] [2022-07-12 06:37:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:37:45,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185570114] [2022-07-12 06:37:45,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185570114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:45,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:45,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751426765] [2022-07-12 06:37:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:45,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:45,742 INFO L87 Difference]: Start difference. First operand 195 states and 286 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:37:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:45,783 INFO L93 Difference]: Finished difference Result 377 states and 562 transitions. [2022-07-12 06:37:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-12 06:37:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:45,786 INFO L225 Difference]: With dead ends: 377 [2022-07-12 06:37:45,786 INFO L226 Difference]: Without dead ends: 199 [2022-07-12 06:37:45,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:45,787 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 5 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:45,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 830 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-12 06:37:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-07-12 06:37:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.4259259259259258) internal successors, (231), 163 states have internal predecessors, (231), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-12 06:37:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 289 transitions. [2022-07-12 06:37:45,812 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 289 transitions. Word has length 55 [2022-07-12 06:37:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:45,812 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 289 transitions. [2022-07-12 06:37:45,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:37:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 289 transitions. [2022-07-12 06:37:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 06:37:45,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:45,814 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:37:45,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1335268689, now seen corresponding path program 1 times [2022-07-12 06:37:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:45,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938364103] [2022-07-12 06:37:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:37:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 06:37:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:45,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938364103] [2022-07-12 06:37:45,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938364103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:45,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:45,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:37:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758807672] [2022-07-12 06:37:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:45,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:37:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:37:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:45,878 INFO L87 Difference]: Start difference. First operand 199 states and 289 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:45,902 INFO L93 Difference]: Finished difference Result 543 states and 801 transitions. [2022-07-12 06:37:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:37:45,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-07-12 06:37:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:45,905 INFO L225 Difference]: With dead ends: 543 [2022-07-12 06:37:45,905 INFO L226 Difference]: Without dead ends: 361 [2022-07-12 06:37:45,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:45,907 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 222 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:45,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 597 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-07-12 06:37:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 352. [2022-07-12 06:37:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 280 states have (on average 1.4464285714285714) internal successors, (405), 282 states have internal predecessors, (405), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-12 06:37:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 519 transitions. [2022-07-12 06:37:45,926 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 519 transitions. Word has length 71 [2022-07-12 06:37:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:45,927 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 519 transitions. [2022-07-12 06:37:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 519 transitions. [2022-07-12 06:37:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 06:37:45,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:45,929 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:37:45,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash -900788511, now seen corresponding path program 1 times [2022-07-12 06:37:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000134450] [2022-07-12 06:37:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:37:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:46,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:46,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000134450] [2022-07-12 06:37:46,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000134450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:46,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:46,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:37:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566434115] [2022-07-12 06:37:46,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:46,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:37:46,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:37:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:46,014 INFO L87 Difference]: Start difference. First operand 352 states and 519 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:46,270 INFO L93 Difference]: Finished difference Result 1012 states and 1519 transitions. [2022-07-12 06:37:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:37:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-07-12 06:37:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:46,275 INFO L225 Difference]: With dead ends: 1012 [2022-07-12 06:37:46,275 INFO L226 Difference]: Without dead ends: 677 [2022-07-12 06:37:46,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:37:46,276 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 761 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:46,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 740 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:37:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-07-12 06:37:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 446. [2022-07-12 06:37:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 370 states have (on average 1.4324324324324325) internal successors, (530), 371 states have internal predecessors, (530), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 648 transitions. [2022-07-12 06:37:46,313 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 648 transitions. Word has length 72 [2022-07-12 06:37:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 648 transitions. [2022-07-12 06:37:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 648 transitions. [2022-07-12 06:37:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 06:37:46,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:46,315 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:46,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:37:46,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 763300850, now seen corresponding path program 1 times [2022-07-12 06:37:46,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:46,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167448704] [2022-07-12 06:37:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:46,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:37:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:46,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:46,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167448704] [2022-07-12 06:37:46,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167448704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:46,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:46,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:37:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328053629] [2022-07-12 06:37:46,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:46,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:37:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:37:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:46,377 INFO L87 Difference]: Start difference. First operand 446 states and 648 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:46,579 INFO L93 Difference]: Finished difference Result 1014 states and 1519 transitions. [2022-07-12 06:37:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:37:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-07-12 06:37:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:46,582 INFO L225 Difference]: With dead ends: 1014 [2022-07-12 06:37:46,582 INFO L226 Difference]: Without dead ends: 679 [2022-07-12 06:37:46,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:37:46,584 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 758 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:46,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 742 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-12 06:37:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 450. [2022-07-12 06:37:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 374 states have (on average 1.427807486631016) internal successors, (534), 375 states have internal predecessors, (534), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 652 transitions. [2022-07-12 06:37:46,609 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 652 transitions. Word has length 73 [2022-07-12 06:37:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:46,610 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 652 transitions. [2022-07-12 06:37:46,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 652 transitions. [2022-07-12 06:37:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 06:37:46,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:46,611 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:46,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:37:46,612 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:46,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1861521472, now seen corresponding path program 1 times [2022-07-12 06:37:46,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:46,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982532667] [2022-07-12 06:37:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:37:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:46,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:46,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982532667] [2022-07-12 06:37:46,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982532667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:46,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:46,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:46,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961417631] [2022-07-12 06:37:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:46,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:46,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:46,675 INFO L87 Difference]: Start difference. First operand 450 states and 652 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:46,891 INFO L93 Difference]: Finished difference Result 1014 states and 1515 transitions. [2022-07-12 06:37:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:37:46,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-07-12 06:37:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:46,896 INFO L225 Difference]: With dead ends: 1014 [2022-07-12 06:37:46,897 INFO L226 Difference]: Without dead ends: 679 [2022-07-12 06:37:46,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:46,899 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 227 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:46,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 715 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:37:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-12 06:37:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 450. [2022-07-12 06:37:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 374 states have (on average 1.4224598930481283) internal successors, (532), 375 states have internal predecessors, (532), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 650 transitions. [2022-07-12 06:37:46,938 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 650 transitions. Word has length 75 [2022-07-12 06:37:46,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:46,941 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 650 transitions. [2022-07-12 06:37:46,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:37:46,941 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 650 transitions. [2022-07-12 06:37:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 06:37:46,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:46,943 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:37:46,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -559886893, now seen corresponding path program 1 times [2022-07-12 06:37:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:46,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020744106] [2022-07-12 06:37:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:47,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020744106] [2022-07-12 06:37:47,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020744106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:47,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:47,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364971124] [2022-07-12 06:37:47,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:47,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:47,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:47,041 INFO L87 Difference]: Start difference. First operand 450 states and 650 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 06:37:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:47,076 INFO L93 Difference]: Finished difference Result 795 states and 1165 transitions. [2022-07-12 06:37:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:47,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-07-12 06:37:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:47,079 INFO L225 Difference]: With dead ends: 795 [2022-07-12 06:37:47,079 INFO L226 Difference]: Without dead ends: 460 [2022-07-12 06:37:47,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:47,080 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 6 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:47,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 842 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-12 06:37:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-07-12 06:37:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 382 states have (on average 1.4136125654450262) internal successors, (540), 383 states have internal predecessors, (540), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 658 transitions. [2022-07-12 06:37:47,103 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 658 transitions. Word has length 76 [2022-07-12 06:37:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:47,103 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 658 transitions. [2022-07-12 06:37:47,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 06:37:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 658 transitions. [2022-07-12 06:37:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 06:37:47,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:47,104 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:37:47,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1187329977, now seen corresponding path program 1 times [2022-07-12 06:37:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877630967] [2022-07-12 06:37:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:47,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:47,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877630967] [2022-07-12 06:37:47,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877630967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:47,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:47,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445334524] [2022-07-12 06:37:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:47,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:47,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:47,170 INFO L87 Difference]: Start difference. First operand 460 states and 658 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:37:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:47,211 INFO L93 Difference]: Finished difference Result 815 states and 1187 transitions. [2022-07-12 06:37:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-07-12 06:37:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:47,214 INFO L225 Difference]: With dead ends: 815 [2022-07-12 06:37:47,214 INFO L226 Difference]: Without dead ends: 470 [2022-07-12 06:37:47,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:47,216 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 6 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:47,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 828 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-12 06:37:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2022-07-12 06:37:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 390 states have (on average 1.405128205128205) internal successors, (548), 391 states have internal predecessors, (548), 59 states have call successors, (59), 20 states have call predecessors, (59), 20 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 666 transitions. [2022-07-12 06:37:47,256 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 666 transitions. Word has length 84 [2022-07-12 06:37:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:47,256 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 666 transitions. [2022-07-12 06:37:47,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:37:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 666 transitions. [2022-07-12 06:37:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 06:37:47,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:47,258 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:47,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:37:47,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1492689475, now seen corresponding path program 1 times [2022-07-12 06:37:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:47,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532946423] [2022-07-12 06:37:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:47,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:47,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:47,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532946423] [2022-07-12 06:37:47,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532946423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:47,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:47,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576338382] [2022-07-12 06:37:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:47,306 INFO L87 Difference]: Start difference. First operand 470 states and 666 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 06:37:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:47,342 INFO L93 Difference]: Finished difference Result 833 states and 1195 transitions. [2022-07-12 06:37:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-12 06:37:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:47,345 INFO L225 Difference]: With dead ends: 833 [2022-07-12 06:37:47,345 INFO L226 Difference]: Without dead ends: 478 [2022-07-12 06:37:47,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:47,346 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:47,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 837 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-07-12 06:37:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-07-12 06:37:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 396 states have (on average 1.398989898989899) internal successors, (554), 397 states have internal predecessors, (554), 59 states have call successors, (59), 22 states have call predecessors, (59), 22 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 672 transitions. [2022-07-12 06:37:47,366 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 672 transitions. Word has length 92 [2022-07-12 06:37:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:47,367 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 672 transitions. [2022-07-12 06:37:47,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 06:37:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 672 transitions. [2022-07-12 06:37:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 06:37:47,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:47,368 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:37:47,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:37:47,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash -405818518, now seen corresponding path program 1 times [2022-07-12 06:37:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:47,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181384112] [2022-07-12 06:37:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:37:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:47,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181384112] [2022-07-12 06:37:47,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181384112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:47,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:47,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:47,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285838976] [2022-07-12 06:37:47,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:47,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:47,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:47,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:47,423 INFO L87 Difference]: Start difference. First operand 478 states and 672 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 06:37:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:47,462 INFO L93 Difference]: Finished difference Result 851 states and 1215 transitions. [2022-07-12 06:37:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-12 06:37:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:47,464 INFO L225 Difference]: With dead ends: 851 [2022-07-12 06:37:47,465 INFO L226 Difference]: Without dead ends: 488 [2022-07-12 06:37:47,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:47,466 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 6 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:47,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 828 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-07-12 06:37:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-07-12 06:37:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 404 states have (on average 1.391089108910891) internal successors, (562), 405 states have internal predecessors, (562), 59 states have call successors, (59), 24 states have call predecessors, (59), 24 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 680 transitions. [2022-07-12 06:37:47,484 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 680 transitions. Word has length 92 [2022-07-12 06:37:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:47,484 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 680 transitions. [2022-07-12 06:37:47,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 06:37:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 680 transitions. [2022-07-12 06:37:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:37:47,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:47,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:47,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:37:47,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:47,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1172591310, now seen corresponding path program 1 times [2022-07-12 06:37:47,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:47,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284768401] [2022-07-12 06:37:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 06:37:47,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:47,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284768401] [2022-07-12 06:37:47,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284768401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:47,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:47,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852286751] [2022-07-12 06:37:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:47,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:47,545 INFO L87 Difference]: Start difference. First operand 488 states and 680 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:37:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:47,598 INFO L93 Difference]: Finished difference Result 873 states and 1229 transitions. [2022-07-12 06:37:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-07-12 06:37:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:47,601 INFO L225 Difference]: With dead ends: 873 [2022-07-12 06:37:47,601 INFO L226 Difference]: Without dead ends: 500 [2022-07-12 06:37:47,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:47,602 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 7 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:47,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 839 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-12 06:37:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-07-12 06:37:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 414 states have (on average 1.3816425120772946) internal successors, (572), 415 states have internal predecessors, (572), 59 states have call successors, (59), 26 states have call predecessors, (59), 26 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:37:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 690 transitions. [2022-07-12 06:37:47,625 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 690 transitions. Word has length 100 [2022-07-12 06:37:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:47,625 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 690 transitions. [2022-07-12 06:37:47,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:37:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 690 transitions. [2022-07-12 06:37:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 06:37:47,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:47,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:37:47,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash 498895455, now seen corresponding path program 1 times [2022-07-12 06:37:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:47,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086207575] [2022-07-12 06:37:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:37:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 06:37:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:47,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086207575] [2022-07-12 06:37:47,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086207575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:47,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:47,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:37:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013210398] [2022-07-12 06:37:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:37:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:37:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:37:47,737 INFO L87 Difference]: Start difference. First operand 500 states and 690 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 06:37:47,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:47,927 INFO L93 Difference]: Finished difference Result 1360 states and 1901 transitions. [2022-07-12 06:37:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:37:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-07-12 06:37:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:47,932 INFO L225 Difference]: With dead ends: 1360 [2022-07-12 06:37:47,932 INFO L226 Difference]: Without dead ends: 975 [2022-07-12 06:37:47,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:37:47,934 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 383 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:47,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2221 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-12 06:37:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 644. [2022-07-12 06:37:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 521 states have (on average 1.3723608445297504) internal successors, (715), 523 states have internal predecessors, (715), 83 states have call successors, (83), 39 states have call predecessors, (83), 39 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-07-12 06:37:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 881 transitions. [2022-07-12 06:37:47,969 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 881 transitions. Word has length 103 [2022-07-12 06:37:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:47,969 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 881 transitions. [2022-07-12 06:37:47,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 06:37:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 881 transitions. [2022-07-12 06:37:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 06:37:47,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:47,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:47,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:37:47,970 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1291996142, now seen corresponding path program 1 times [2022-07-12 06:37:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:47,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075904867] [2022-07-12 06:37:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:37:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 06:37:48,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:48,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075904867] [2022-07-12 06:37:48,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075904867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:48,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:48,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258972978] [2022-07-12 06:37:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:48,034 INFO L87 Difference]: Start difference. First operand 644 states and 881 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 06:37:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:48,085 INFO L93 Difference]: Finished difference Result 1149 states and 1585 transitions. [2022-07-12 06:37:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:37:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-07-12 06:37:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:48,089 INFO L225 Difference]: With dead ends: 1149 [2022-07-12 06:37:48,089 INFO L226 Difference]: Without dead ends: 656 [2022-07-12 06:37:48,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:48,091 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:48,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 837 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-12 06:37:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2022-07-12 06:37:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 530 states have (on average 1.3660377358490565) internal successors, (724), 532 states have internal predecessors, (724), 83 states have call successors, (83), 42 states have call predecessors, (83), 42 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-07-12 06:37:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 890 transitions. [2022-07-12 06:37:48,121 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 890 transitions. Word has length 107 [2022-07-12 06:37:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:48,121 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 890 transitions. [2022-07-12 06:37:48,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 06:37:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 890 transitions. [2022-07-12 06:37:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 06:37:48,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:48,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:37:48,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 739054211, now seen corresponding path program 1 times [2022-07-12 06:37:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:48,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399087755] [2022-07-12 06:37:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:37:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 06:37:48,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:48,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399087755] [2022-07-12 06:37:48,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399087755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:48,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:48,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:37:48,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959933545] [2022-07-12 06:37:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:37:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:37:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:37:48,195 INFO L87 Difference]: Start difference. First operand 656 states and 890 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 06:37:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:48,273 INFO L93 Difference]: Finished difference Result 921 states and 1302 transitions. [2022-07-12 06:37:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:37:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-07-12 06:37:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:48,277 INFO L225 Difference]: With dead ends: 921 [2022-07-12 06:37:48,277 INFO L226 Difference]: Without dead ends: 919 [2022-07-12 06:37:48,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:37:48,279 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 261 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:48,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 2190 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-07-12 06:37:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 660. [2022-07-12 06:37:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 532 states have (on average 1.3646616541353382) internal successors, (726), 535 states have internal predecessors, (726), 84 states have call successors, (84), 43 states have call predecessors, (84), 43 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-12 06:37:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 894 transitions. [2022-07-12 06:37:48,311 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 894 transitions. Word has length 106 [2022-07-12 06:37:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:48,312 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 894 transitions. [2022-07-12 06:37:48,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 06:37:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 894 transitions. [2022-07-12 06:37:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 06:37:48,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:48,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:37:48,313 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1139472038, now seen corresponding path program 1 times [2022-07-12 06:37:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:48,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982542804] [2022-07-12 06:37:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:37:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 06:37:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982542804] [2022-07-12 06:37:48,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982542804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:48,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:48,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:37:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090448080] [2022-07-12 06:37:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:48,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:37:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:37:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:37:48,413 INFO L87 Difference]: Start difference. First operand 660 states and 894 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:37:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:48,533 INFO L93 Difference]: Finished difference Result 1388 states and 1913 transitions. [2022-07-12 06:37:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:37:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-12 06:37:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:48,536 INFO L225 Difference]: With dead ends: 1388 [2022-07-12 06:37:48,536 INFO L226 Difference]: Without dead ends: 920 [2022-07-12 06:37:48,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:37:48,538 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 503 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:48,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 2178 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-07-12 06:37:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 703. [2022-07-12 06:37:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 584 states have (on average 1.3595890410958904) internal successors, (794), 589 states have internal predecessors, (794), 76 states have call successors, (76), 42 states have call predecessors, (76), 42 states have return successors, (76), 71 states have call predecessors, (76), 76 states have call successors, (76) [2022-07-12 06:37:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 946 transitions. [2022-07-12 06:37:48,574 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 946 transitions. Word has length 109 [2022-07-12 06:37:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:48,575 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 946 transitions. [2022-07-12 06:37:48,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:37:48,575 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 946 transitions. [2022-07-12 06:37:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 06:37:48,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:48,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:48,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:37:48,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash 672232165, now seen corresponding path program 1 times [2022-07-12 06:37:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464660356] [2022-07-12 06:37:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:37:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:37:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 06:37:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:48,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464660356] [2022-07-12 06:37:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464660356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:48,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:48,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:37:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291844146] [2022-07-12 06:37:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:37:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:37:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:37:48,686 INFO L87 Difference]: Start difference. First operand 703 states and 946 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 06:37:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:48,836 INFO L93 Difference]: Finished difference Result 1450 states and 1994 transitions. [2022-07-12 06:37:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:37:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-07-12 06:37:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:48,839 INFO L225 Difference]: With dead ends: 1450 [2022-07-12 06:37:48,839 INFO L226 Difference]: Without dead ends: 929 [2022-07-12 06:37:48,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:37:48,841 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 367 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:48,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 2330 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-07-12 06:37:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 692. [2022-07-12 06:37:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 576 states have (on average 1.3576388888888888) internal successors, (782), 581 states have internal predecessors, (782), 74 states have call successors, (74), 41 states have call predecessors, (74), 41 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2022-07-12 06:37:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 930 transitions. [2022-07-12 06:37:48,879 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 930 transitions. Word has length 111 [2022-07-12 06:37:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:48,879 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 930 transitions. [2022-07-12 06:37:48,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 06:37:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 930 transitions. [2022-07-12 06:37:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 06:37:48,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:48,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:48,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:37:48,880 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1990320010, now seen corresponding path program 1 times [2022-07-12 06:37:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781207066] [2022-07-12 06:37:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:48,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:37:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:37:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:48,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:48,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781207066] [2022-07-12 06:37:48,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781207066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:48,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:48,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715719748] [2022-07-12 06:37:48,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:48,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:48,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:48,945 INFO L87 Difference]: Start difference. First operand 692 states and 930 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:49,105 INFO L93 Difference]: Finished difference Result 1922 states and 2633 transitions. [2022-07-12 06:37:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:37:49,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-07-12 06:37:49,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:49,110 INFO L225 Difference]: With dead ends: 1922 [2022-07-12 06:37:49,110 INFO L226 Difference]: Without dead ends: 1392 [2022-07-12 06:37:49,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:49,111 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 424 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:49,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1043 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-07-12 06:37:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1154. [2022-07-12 06:37:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 938 states have (on average 1.349680170575693) internal successors, (1266), 947 states have internal predecessors, (1266), 140 states have call successors, (140), 75 states have call predecessors, (140), 75 states have return successors, (140), 131 states have call predecessors, (140), 140 states have call successors, (140) [2022-07-12 06:37:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1546 transitions. [2022-07-12 06:37:49,205 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1546 transitions. Word has length 112 [2022-07-12 06:37:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:49,206 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1546 transitions. [2022-07-12 06:37:49,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1546 transitions. [2022-07-12 06:37:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 06:37:49,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:49,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:37:49,207 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1802932996, now seen corresponding path program 1 times [2022-07-12 06:37:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:49,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872297459] [2022-07-12 06:37:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:37:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:37:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:37:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:49,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872297459] [2022-07-12 06:37:49,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872297459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:49,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:49,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:37:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320103851] [2022-07-12 06:37:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:49,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:37:49,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:37:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:49,246 INFO L87 Difference]: Start difference. First operand 1154 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 06:37:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:49,347 INFO L93 Difference]: Finished difference Result 3024 states and 4036 transitions. [2022-07-12 06:37:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:37:49,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 112 [2022-07-12 06:37:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:49,354 INFO L225 Difference]: With dead ends: 3024 [2022-07-12 06:37:49,354 INFO L226 Difference]: Without dead ends: 2045 [2022-07-12 06:37:49,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:49,357 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 220 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:49,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-07-12 06:37:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1691. [2022-07-12 06:37:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1340 states have (on average 1.3425373134328358) internal successors, (1799), 1355 states have internal predecessors, (1799), 230 states have call successors, (230), 120 states have call predecessors, (230), 120 states have return successors, (230), 215 states have call predecessors, (230), 230 states have call successors, (230) [2022-07-12 06:37:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2259 transitions. [2022-07-12 06:37:49,474 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2259 transitions. Word has length 112 [2022-07-12 06:37:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:49,474 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2259 transitions. [2022-07-12 06:37:49,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 06:37:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2259 transitions. [2022-07-12 06:37:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 06:37:49,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:49,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:37:49,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -225653114, now seen corresponding path program 1 times [2022-07-12 06:37:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621837620] [2022-07-12 06:37:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:49,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:37:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:37:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:37:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 06:37:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621837620] [2022-07-12 06:37:49,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621837620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:49,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:49,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:37:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684918172] [2022-07-12 06:37:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:37:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:37:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:37:49,558 INFO L87 Difference]: Start difference. First operand 1691 states and 2259 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 06:37:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:50,084 INFO L93 Difference]: Finished difference Result 3913 states and 5376 transitions. [2022-07-12 06:37:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:37:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-07-12 06:37:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:50,093 INFO L225 Difference]: With dead ends: 3913 [2022-07-12 06:37:50,093 INFO L226 Difference]: Without dead ends: 2493 [2022-07-12 06:37:50,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:37:50,096 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 717 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 3052 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:37:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2022-07-12 06:37:50,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 1697. [2022-07-12 06:37:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1340 states have (on average 1.3291044776119403) internal successors, (1781), 1356 states have internal predecessors, (1781), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-12 06:37:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2243 transitions. [2022-07-12 06:37:50,240 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2243 transitions. Word has length 112 [2022-07-12 06:37:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:50,240 INFO L495 AbstractCegarLoop]: Abstraction has 1697 states and 2243 transitions. [2022-07-12 06:37:50,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 06:37:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2243 transitions. [2022-07-12 06:37:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 06:37:50,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:50,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:50,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:37:50,241 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2002429441, now seen corresponding path program 1 times [2022-07-12 06:37:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:50,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562048073] [2022-07-12 06:37:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:37:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:37:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 06:37:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562048073] [2022-07-12 06:37:50,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562048073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:50,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:50,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:37:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623936323] [2022-07-12 06:37:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:37:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:37:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:37:50,328 INFO L87 Difference]: Start difference. First operand 1697 states and 2243 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:50,873 INFO L93 Difference]: Finished difference Result 4049 states and 5477 transitions. [2022-07-12 06:37:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:37:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-07-12 06:37:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:50,882 INFO L225 Difference]: With dead ends: 4049 [2022-07-12 06:37:50,882 INFO L226 Difference]: Without dead ends: 2681 [2022-07-12 06:37:50,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:37:50,885 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 780 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:50,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 2364 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:37:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-07-12 06:37:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1716. [2022-07-12 06:37:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1346 states have (on average 1.324665676077266) internal successors, (1783), 1363 states have internal predecessors, (1783), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2022-07-12 06:37:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2261 transitions. [2022-07-12 06:37:51,037 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2261 transitions. Word has length 114 [2022-07-12 06:37:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:51,037 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2261 transitions. [2022-07-12 06:37:51,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2261 transitions. [2022-07-12 06:37:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 06:37:51,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:51,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:37:51,039 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1926273345, now seen corresponding path program 1 times [2022-07-12 06:37:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:51,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030965709] [2022-07-12 06:37:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:37:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:37:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:37:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:37:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:37:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:37:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:37:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:51,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:51,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030965709] [2022-07-12 06:37:51,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030965709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:51,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:51,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:51,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225039350] [2022-07-12 06:37:51,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:51,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:51,082 INFO L87 Difference]: Start difference. First operand 1716 states and 2261 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:51,383 INFO L93 Difference]: Finished difference Result 4474 states and 5968 transitions. [2022-07-12 06:37:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:37:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-12 06:37:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:51,396 INFO L225 Difference]: With dead ends: 4474 [2022-07-12 06:37:51,397 INFO L226 Difference]: Without dead ends: 3122 [2022-07-12 06:37:51,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:51,400 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 468 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:51,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1242 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-07-12 06:37:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2645. [2022-07-12 06:37:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2038 states have (on average 1.3209028459273797) internal successors, (2692), 2065 states have internal predecessors, (2692), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-07-12 06:37:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 3480 transitions. [2022-07-12 06:37:51,615 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 3480 transitions. Word has length 115 [2022-07-12 06:37:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:51,615 INFO L495 AbstractCegarLoop]: Abstraction has 2645 states and 3480 transitions. [2022-07-12 06:37:51,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 3480 transitions. [2022-07-12 06:37:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 06:37:51,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:51,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:51,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 06:37:51,617 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -359185766, now seen corresponding path program 1 times [2022-07-12 06:37:51,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:51,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005571259] [2022-07-12 06:37:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:51,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 06:37:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:37:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:37:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:37:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:37:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:37:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:37:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005571259] [2022-07-12 06:37:51,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005571259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:51,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:51,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:37:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633897411] [2022-07-12 06:37:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:51,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:37:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:37:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:51,645 INFO L87 Difference]: Start difference. First operand 2645 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:52,019 INFO L93 Difference]: Finished difference Result 6356 states and 8732 transitions. [2022-07-12 06:37:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:37:52,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-12 06:37:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:52,045 INFO L225 Difference]: With dead ends: 6356 [2022-07-12 06:37:52,046 INFO L226 Difference]: Without dead ends: 3955 [2022-07-12 06:37:52,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:52,052 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 151 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:52,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 683 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-07-12 06:37:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2648. [2022-07-12 06:37:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 2041 states have (on average 1.3204311611954924) internal successors, (2695), 2068 states have internal predecessors, (2695), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-07-12 06:37:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3483 transitions. [2022-07-12 06:37:52,313 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3483 transitions. Word has length 115 [2022-07-12 06:37:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:52,313 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 3483 transitions. [2022-07-12 06:37:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3483 transitions. [2022-07-12 06:37:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 06:37:52,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:52,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:52,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 06:37:52,315 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1956455983, now seen corresponding path program 1 times [2022-07-12 06:37:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:52,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470418193] [2022-07-12 06:37:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 06:37:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:37:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:37:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:37:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:37:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:37:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:37:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470418193] [2022-07-12 06:37:52,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470418193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:52,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:52,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588111545] [2022-07-12 06:37:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:52,367 INFO L87 Difference]: Start difference. First operand 2648 states and 3483 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:52,891 INFO L93 Difference]: Finished difference Result 6363 states and 8434 transitions. [2022-07-12 06:37:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:37:52,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-12 06:37:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:52,911 INFO L225 Difference]: With dead ends: 6363 [2022-07-12 06:37:52,911 INFO L226 Difference]: Without dead ends: 4210 [2022-07-12 06:37:52,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:52,917 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 417 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:52,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1246 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2022-07-12 06:37:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3626. [2022-07-12 06:37:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 2780 states have (on average 1.3183453237410072) internal successors, (3665), 2817 states have internal predecessors, (3665), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2022-07-12 06:37:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 4767 transitions. [2022-07-12 06:37:53,222 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 4767 transitions. Word has length 115 [2022-07-12 06:37:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:53,222 INFO L495 AbstractCegarLoop]: Abstraction has 3626 states and 4767 transitions. [2022-07-12 06:37:53,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 4767 transitions. [2022-07-12 06:37:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 06:37:53,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:53,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 06:37:53,225 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash -692474903, now seen corresponding path program 1 times [2022-07-12 06:37:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:53,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384740305] [2022-07-12 06:37:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 06:37:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:37:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:37:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:37:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:37:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:37:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:37:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:53,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384740305] [2022-07-12 06:37:53,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384740305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:53,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:53,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004113208] [2022-07-12 06:37:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:53,295 INFO L87 Difference]: Start difference. First operand 3626 states and 4767 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:53,642 INFO L93 Difference]: Finished difference Result 7543 states and 10134 transitions. [2022-07-12 06:37:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:37:53,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-07-12 06:37:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:53,653 INFO L225 Difference]: With dead ends: 7543 [2022-07-12 06:37:53,653 INFO L226 Difference]: Without dead ends: 4010 [2022-07-12 06:37:53,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:53,661 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 368 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:53,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 860 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2022-07-12 06:37:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3152. [2022-07-12 06:37:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 2383 states have (on average 1.3176668065463701) internal successors, (3140), 2407 states have internal predecessors, (3140), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-07-12 06:37:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4144 transitions. [2022-07-12 06:37:53,898 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4144 transitions. Word has length 116 [2022-07-12 06:37:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:53,898 INFO L495 AbstractCegarLoop]: Abstraction has 3152 states and 4144 transitions. [2022-07-12 06:37:53,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4144 transitions. [2022-07-12 06:37:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 06:37:53,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:53,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:53,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 06:37:53,900 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -962766154, now seen corresponding path program 1 times [2022-07-12 06:37:53,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:53,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798779331] [2022-07-12 06:37:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:53,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 06:37:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:37:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:37:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:37:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:37:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:37:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:37:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:53,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:53,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798779331] [2022-07-12 06:37:53,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798779331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:53,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:53,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:37:53,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124939785] [2022-07-12 06:37:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:53,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:37:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:37:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:53,929 INFO L87 Difference]: Start difference. First operand 3152 states and 4144 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:54,285 INFO L93 Difference]: Finished difference Result 6864 states and 9256 transitions. [2022-07-12 06:37:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:37:54,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-12 06:37:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:54,295 INFO L225 Difference]: With dead ends: 6864 [2022-07-12 06:37:54,295 INFO L226 Difference]: Without dead ends: 3925 [2022-07-12 06:37:54,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:37:54,301 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 151 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:54,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 659 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:37:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-07-12 06:37:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3159. [2022-07-12 06:37:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 2390 states have (on average 1.3167364016736403) internal successors, (3147), 2414 states have internal predecessors, (3147), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-07-12 06:37:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4151 transitions. [2022-07-12 06:37:54,578 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4151 transitions. Word has length 118 [2022-07-12 06:37:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:54,578 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 4151 transitions. [2022-07-12 06:37:54,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4151 transitions. [2022-07-12 06:37:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 06:37:54,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:54,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 06:37:54,580 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1404528470, now seen corresponding path program 1 times [2022-07-12 06:37:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:54,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693364944] [2022-07-12 06:37:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 06:37:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:37:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:37:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:37:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:37:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:37:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:37:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 06:37:54,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:54,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693364944] [2022-07-12 06:37:54,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693364944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:37:54,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:37:54,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:37:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070827912] [2022-07-12 06:37:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:37:54,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:37:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:37:54,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:37:54,661 INFO L87 Difference]: Start difference. First operand 3159 states and 4151 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:37:55,063 INFO L93 Difference]: Finished difference Result 6831 states and 9219 transitions. [2022-07-12 06:37:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:37:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-12 06:37:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:37:55,074 INFO L225 Difference]: With dead ends: 6831 [2022-07-12 06:37:55,075 INFO L226 Difference]: Without dead ends: 3818 [2022-07-12 06:37:55,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:37:55,081 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 277 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:37:55,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 872 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:37:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2022-07-12 06:37:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 2901. [2022-07-12 06:37:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2191 states have (on average 1.3144682793245093) internal successors, (2880), 2210 states have internal predecessors, (2880), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2022-07-12 06:37:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3808 transitions. [2022-07-12 06:37:55,343 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3808 transitions. Word has length 118 [2022-07-12 06:37:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:37:55,343 INFO L495 AbstractCegarLoop]: Abstraction has 2901 states and 3808 transitions. [2022-07-12 06:37:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:37:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3808 transitions. [2022-07-12 06:37:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 06:37:55,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:37:55,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:37:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 06:37:55,348 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:37:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:37:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1457998733, now seen corresponding path program 1 times [2022-07-12 06:37:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:37:55,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118442099] [2022-07-12 06:37:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:37:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:37:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:37:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:37:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:37:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:37:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:37:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:37:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:37:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 06:37:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 06:37:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 06:37:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:37:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 06:37:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 06:37:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 06:37:55,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:37:55,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118442099] [2022-07-12 06:37:55,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118442099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:37:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890986876] [2022-07-12 06:37:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:37:55,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:37:55,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:37:55,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:37:55,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:37:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:37:55,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 06:37:55,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:37:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 06:37:55,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:37:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 06:37:56,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890986876] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:37:56,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:37:56,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2022-07-12 06:37:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127144385] [2022-07-12 06:37:56,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:37:56,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 06:37:56,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:37:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 06:37:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-12 06:37:56,141 INFO L87 Difference]: Start difference. First operand 2901 states and 3808 transitions. Second operand has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 18 states have internal predecessors, (274), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-12 06:38:01,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:01,693 INFO L93 Difference]: Finished difference Result 10514 states and 14418 transitions. [2022-07-12 06:38:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-12 06:38:01,693 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 18 states have internal predecessors, (274), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) Word has length 185 [2022-07-12 06:38:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:01,714 INFO L225 Difference]: With dead ends: 10514 [2022-07-12 06:38:01,714 INFO L226 Difference]: Without dead ends: 7856 [2022-07-12 06:38:01,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4892 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2387, Invalid=10953, Unknown=0, NotChecked=0, Total=13340 [2022-07-12 06:38:01,722 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 5585 mSDsluCounter, 5594 mSDsCounter, 0 mSdLazyCounter, 4727 mSolverCounterSat, 2390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5585 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 7117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2390 IncrementalHoareTripleChecker+Valid, 4727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:01,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5585 Valid, 6231 Invalid, 7117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2390 Valid, 4727 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 06:38:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7856 states. [2022-07-12 06:38:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7856 to 4372. [2022-07-12 06:38:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 3338 states have (on average 1.3118633912522468) internal successors, (4379), 3363 states have internal predecessors, (4379), 666 states have call successors, (666), 367 states have call predecessors, (666), 367 states have return successors, (666), 641 states have call predecessors, (666), 666 states have call successors, (666) [2022-07-12 06:38:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 5711 transitions. [2022-07-12 06:38:02,120 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 5711 transitions. Word has length 185 [2022-07-12 06:38:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:02,120 INFO L495 AbstractCegarLoop]: Abstraction has 4372 states and 5711 transitions. [2022-07-12 06:38:02,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 18 states have internal predecessors, (274), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-12 06:38:02,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 5711 transitions. [2022-07-12 06:38:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 06:38:02,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:02,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:02,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:02,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 06:38:02,345 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:02,346 INFO L85 PathProgramCache]: Analyzing trace with hash 17651729, now seen corresponding path program 1 times [2022-07-12 06:38:02,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:02,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052613286] [2022-07-12 06:38:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:02,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:38:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:38:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:38:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:38:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:38:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:38:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 06:38:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 06:38:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 06:38:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:38:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 06:38:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 06:38:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 06:38:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052613286] [2022-07-12 06:38:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052613286] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320600193] [2022-07-12 06:38:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:02,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:02,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:02,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:02,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:38:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:02,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 06:38:02,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 06:38:02,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 06:38:02,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320600193] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:02,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:02,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-12 06:38:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826725196] [2022-07-12 06:38:02,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 06:38:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 06:38:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:38:02,980 INFO L87 Difference]: Start difference. First operand 4372 states and 5711 transitions. Second operand has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 13 states have internal predecessors, (263), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-12 06:38:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:05,780 INFO L93 Difference]: Finished difference Result 11427 states and 15614 transitions. [2022-07-12 06:38:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-12 06:38:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 13 states have internal predecessors, (263), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 185 [2022-07-12 06:38:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:05,801 INFO L225 Difference]: With dead ends: 11427 [2022-07-12 06:38:05,801 INFO L226 Difference]: Without dead ends: 7426 [2022-07-12 06:38:05,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-12 06:38:05,808 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2901 mSDsluCounter, 3949 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2901 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:05,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2901 Valid, 4424 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:38:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2022-07-12 06:38:06,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 4372. [2022-07-12 06:38:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 3338 states have (on average 1.3067705212702216) internal successors, (4362), 3363 states have internal predecessors, (4362), 666 states have call successors, (666), 367 states have call predecessors, (666), 367 states have return successors, (666), 641 states have call predecessors, (666), 666 states have call successors, (666) [2022-07-12 06:38:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 5694 transitions. [2022-07-12 06:38:06,269 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 5694 transitions. Word has length 185 [2022-07-12 06:38:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:06,270 INFO L495 AbstractCegarLoop]: Abstraction has 4372 states and 5694 transitions. [2022-07-12 06:38:06,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 13 states have internal predecessors, (263), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-12 06:38:06,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 5694 transitions. [2022-07-12 06:38:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 06:38:06,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:06,291 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:06,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 06:38:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 06:38:06,509 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 264749648, now seen corresponding path program 1 times [2022-07-12 06:38:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:06,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626885377] [2022-07-12 06:38:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:38:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:38:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:38:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:38:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:38:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:38:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 06:38:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 06:38:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 06:38:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-12 06:38:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:38:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 06:38:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 06:38:06,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:06,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626885377] [2022-07-12 06:38:06,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626885377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:06,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:06,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:38:06,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011941690] [2022-07-12 06:38:06,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:06,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:38:06,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:06,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:38:06,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:38:06,589 INFO L87 Difference]: Start difference. First operand 4372 states and 5694 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:38:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:07,874 INFO L93 Difference]: Finished difference Result 14760 states and 19864 transitions. [2022-07-12 06:38:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:38:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 194 [2022-07-12 06:38:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:07,896 INFO L225 Difference]: With dead ends: 14760 [2022-07-12 06:38:07,896 INFO L226 Difference]: Without dead ends: 10786 [2022-07-12 06:38:07,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:38:07,903 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 808 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:07,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 2958 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10786 states. [2022-07-12 06:38:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10786 to 6092. [2022-07-12 06:38:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 4582 states have (on average 1.304452204277608) internal successors, (5977), 4619 states have internal predecessors, (5977), 986 states have call successors, (986), 523 states have call predecessors, (986), 523 states have return successors, (986), 949 states have call predecessors, (986), 986 states have call successors, (986) [2022-07-12 06:38:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 7949 transitions. [2022-07-12 06:38:08,493 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 7949 transitions. Word has length 194 [2022-07-12 06:38:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:08,493 INFO L495 AbstractCegarLoop]: Abstraction has 6092 states and 7949 transitions. [2022-07-12 06:38:08,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:38:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 7949 transitions. [2022-07-12 06:38:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-12 06:38:08,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:08,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:08,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 06:38:08,501 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 322517035, now seen corresponding path program 1 times [2022-07-12 06:38:08,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:08,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369600650] [2022-07-12 06:38:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:08,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:38:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:38:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:38:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:38:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:38:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:38:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 06:38:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 06:38:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 06:38:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 06:38:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 06:38:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 06:38:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 06:38:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:08,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369600650] [2022-07-12 06:38:08,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369600650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692965987] [2022-07-12 06:38:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:08,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:08,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:08,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:08,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:38:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:08,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 06:38:08,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 06:38:08,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 06:38:09,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692965987] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:09,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:09,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-12 06:38:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274272480] [2022-07-12 06:38:09,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:09,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 06:38:09,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 06:38:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:38:09,078 INFO L87 Difference]: Start difference. First operand 6092 states and 7949 transitions. Second operand has 16 states, 16 states have (on average 18.125) internal successors, (290), 15 states have internal predecessors, (290), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-12 06:38:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:16,870 INFO L93 Difference]: Finished difference Result 25522 states and 34804 transitions. [2022-07-12 06:38:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-07-12 06:38:16,871 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 15 states have internal predecessors, (290), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) Word has length 196 [2022-07-12 06:38:16,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:16,922 INFO L225 Difference]: With dead ends: 25522 [2022-07-12 06:38:16,922 INFO L226 Difference]: Without dead ends: 19828 [2022-07-12 06:38:16,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8834 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3372, Invalid=18384, Unknown=0, NotChecked=0, Total=21756 [2022-07-12 06:38:16,941 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 11472 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 5284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11472 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 9386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5284 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:16,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11472 Valid, 6176 Invalid, 9386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5284 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 06:38:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19828 states. [2022-07-12 06:38:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19828 to 8800. [2022-07-12 06:38:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8800 states, 6592 states have (on average 1.2999089805825244) internal successors, (8569), 6647 states have internal predecessors, (8569), 1438 states have call successors, (1438), 769 states have call predecessors, (1438), 769 states have return successors, (1438), 1383 states have call predecessors, (1438), 1438 states have call successors, (1438) [2022-07-12 06:38:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8800 states to 8800 states and 11445 transitions. [2022-07-12 06:38:18,051 INFO L78 Accepts]: Start accepts. Automaton has 8800 states and 11445 transitions. Word has length 196 [2022-07-12 06:38:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:18,051 INFO L495 AbstractCegarLoop]: Abstraction has 8800 states and 11445 transitions. [2022-07-12 06:38:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 15 states have internal predecessors, (290), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-12 06:38:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8800 states and 11445 transitions. [2022-07-12 06:38:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-12 06:38:18,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:18,063 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:18,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 06:38:18,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:18,277 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:18,277 INFO L85 PathProgramCache]: Analyzing trace with hash -607517794, now seen corresponding path program 1 times [2022-07-12 06:38:18,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:18,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724567579] [2022-07-12 06:38:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:18,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:38:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:38:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:38:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 06:38:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 06:38:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-12 06:38:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 06:38:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 06:38:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 06:38:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 06:38:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:18,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724567579] [2022-07-12 06:38:18,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724567579] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:18,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524704497] [2022-07-12 06:38:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:18,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:18,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:18,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:18,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:38:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:18,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 06:38:18,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-12 06:38:18,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 06:38:18,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524704497] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:18,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:18,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-12 06:38:18,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363682571] [2022-07-12 06:38:18,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 06:38:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 06:38:18,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:38:18,813 INFO L87 Difference]: Start difference. First operand 8800 states and 11445 transitions. Second operand has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 16 states have internal predecessors, (247), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-12 06:38:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:24,504 INFO L93 Difference]: Finished difference Result 26193 states and 35896 transitions. [2022-07-12 06:38:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-12 06:38:24,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 16 states have internal predecessors, (247), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 197 [2022-07-12 06:38:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:24,543 INFO L225 Difference]: With dead ends: 26193 [2022-07-12 06:38:24,543 INFO L226 Difference]: Without dead ends: 17713 [2022-07-12 06:38:24,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=662, Invalid=4168, Unknown=0, NotChecked=0, Total=4830 [2022-07-12 06:38:24,555 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 2578 mSDsluCounter, 8149 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 9006 SdHoareTripleChecker+Invalid, 6045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:24,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2578 Valid, 9006 Invalid, 6045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1209 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 06:38:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17713 states. [2022-07-12 06:38:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17713 to 10196. [2022-07-12 06:38:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10196 states, 7614 states have (on average 1.2966903073286051) internal successors, (9873), 7679 states have internal predecessors, (9873), 1676 states have call successors, (1676), 905 states have call predecessors, (1676), 905 states have return successors, (1676), 1611 states have call predecessors, (1676), 1676 states have call successors, (1676) [2022-07-12 06:38:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10196 states to 10196 states and 13225 transitions. [2022-07-12 06:38:25,898 INFO L78 Accepts]: Start accepts. Automaton has 10196 states and 13225 transitions. Word has length 197 [2022-07-12 06:38:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:25,898 INFO L495 AbstractCegarLoop]: Abstraction has 10196 states and 13225 transitions. [2022-07-12 06:38:25,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 16 states have internal predecessors, (247), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-12 06:38:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 10196 states and 13225 transitions. [2022-07-12 06:38:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 06:38:25,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:25,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:25,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:26,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:26,132 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 266392652, now seen corresponding path program 1 times [2022-07-12 06:38:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:26,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556380363] [2022-07-12 06:38:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:38:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:38:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:38:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:38:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 06:38:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 06:38:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 06:38:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 06:38:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 06:38:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 06:38:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 06:38:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556380363] [2022-07-12 06:38:26,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556380363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947626601] [2022-07-12 06:38:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:26,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:26,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:26,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:26,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:38:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 06:38:26,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-12 06:38:26,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 06:38:26,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947626601] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:26,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:26,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-12 06:38:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601791660] [2022-07-12 06:38:26,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:26,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:38:26,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:38:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:38:26,624 INFO L87 Difference]: Start difference. First operand 10196 states and 13225 transitions. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 8 states have internal predecessors, (180), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-12 06:38:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:28,650 INFO L93 Difference]: Finished difference Result 24217 states and 32536 transitions. [2022-07-12 06:38:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:38:28,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 8 states have internal predecessors, (180), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 205 [2022-07-12 06:38:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:28,694 INFO L225 Difference]: With dead ends: 24217 [2022-07-12 06:38:28,694 INFO L226 Difference]: Without dead ends: 14409 [2022-07-12 06:38:28,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 439 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:38:28,710 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 284 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:28,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 2626 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14409 states. [2022-07-12 06:38:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14409 to 10196. [2022-07-12 06:38:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10196 states, 7614 states have (on average 1.2957709482532178) internal successors, (9866), 7679 states have internal predecessors, (9866), 1676 states have call successors, (1676), 905 states have call predecessors, (1676), 905 states have return successors, (1676), 1611 states have call predecessors, (1676), 1676 states have call successors, (1676) [2022-07-12 06:38:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10196 states to 10196 states and 13218 transitions. [2022-07-12 06:38:30,090 INFO L78 Accepts]: Start accepts. Automaton has 10196 states and 13218 transitions. Word has length 205 [2022-07-12 06:38:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:30,090 INFO L495 AbstractCegarLoop]: Abstraction has 10196 states and 13218 transitions. [2022-07-12 06:38:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 8 states have internal predecessors, (180), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-12 06:38:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10196 states and 13218 transitions. [2022-07-12 06:38:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-12 06:38:30,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:30,107 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:30,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 06:38:30,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-12 06:38:30,327 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -395672383, now seen corresponding path program 1 times [2022-07-12 06:38:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:30,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922292824] [2022-07-12 06:38:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 06:38:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 06:38:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 06:38:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 06:38:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 06:38:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:38:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-12 06:38:30,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:30,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922292824] [2022-07-12 06:38:30,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922292824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:30,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:30,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:30,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420296151] [2022-07-12 06:38:30,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:30,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:30,442 INFO L87 Difference]: Start difference. First operand 10196 states and 13218 transitions. Second operand has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 06:38:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:31,377 INFO L93 Difference]: Finished difference Result 16446 states and 21413 transitions. [2022-07-12 06:38:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 212 [2022-07-12 06:38:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:31,419 INFO L225 Difference]: With dead ends: 16446 [2022-07-12 06:38:31,435 INFO L226 Difference]: Without dead ends: 6606 [2022-07-12 06:38:31,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:31,464 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:31,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1120 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2022-07-12 06:38:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 6606. [2022-07-12 06:38:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6606 states, 4948 states have (on average 1.2954729183508489) internal successors, (6410), 4989 states have internal predecessors, (6410), 1080 states have call successors, (1080), 577 states have call predecessors, (1080), 577 states have return successors, (1080), 1039 states have call predecessors, (1080), 1080 states have call successors, (1080) [2022-07-12 06:38:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 8570 transitions. [2022-07-12 06:38:32,210 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 8570 transitions. Word has length 212 [2022-07-12 06:38:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:32,210 INFO L495 AbstractCegarLoop]: Abstraction has 6606 states and 8570 transitions. [2022-07-12 06:38:32,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 06:38:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 8570 transitions. [2022-07-12 06:38:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-12 06:38:32,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:32,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:32,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 06:38:32,219 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash -56266143, now seen corresponding path program 1 times [2022-07-12 06:38:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:32,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807222288] [2022-07-12 06:38:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:32,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:38:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 06:38:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 06:38:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 06:38:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 06:38:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:38:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 06:38:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:32,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807222288] [2022-07-12 06:38:32,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807222288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:32,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:32,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856909311] [2022-07-12 06:38:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:32,283 INFO L87 Difference]: Start difference. First operand 6606 states and 8570 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:38:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:33,101 INFO L93 Difference]: Finished difference Result 12559 states and 16371 transitions. [2022-07-12 06:38:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 212 [2022-07-12 06:38:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:33,114 INFO L225 Difference]: With dead ends: 12559 [2022-07-12 06:38:33,115 INFO L226 Difference]: Without dead ends: 6242 [2022-07-12 06:38:33,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:33,140 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 277 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:33,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 426 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2022-07-12 06:38:33,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 6242. [2022-07-12 06:38:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6242 states, 4678 states have (on average 1.2967079948696023) internal successors, (6066), 4717 states have internal predecessors, (6066), 1020 states have call successors, (1020), 543 states have call predecessors, (1020), 543 states have return successors, (1020), 981 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-07-12 06:38:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6242 states to 6242 states and 8106 transitions. [2022-07-12 06:38:33,886 INFO L78 Accepts]: Start accepts. Automaton has 6242 states and 8106 transitions. Word has length 212 [2022-07-12 06:38:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:33,886 INFO L495 AbstractCegarLoop]: Abstraction has 6242 states and 8106 transitions. [2022-07-12 06:38:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:38:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6242 states and 8106 transitions. [2022-07-12 06:38:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-12 06:38:33,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:33,894 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:33,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 06:38:33,894 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:33,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash 598590481, now seen corresponding path program 1 times [2022-07-12 06:38:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609975705] [2022-07-12 06:38:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:38:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:38:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:38:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:38:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:38:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:38:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:38:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:38:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 06:38:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-12 06:38:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 06:38:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 06:38:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 06:38:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 06:38:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-12 06:38:33,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609975705] [2022-07-12 06:38:33,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609975705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:33,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936242265] [2022-07-12 06:38:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:33,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:33,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:33,963 INFO L87 Difference]: Start difference. First operand 6242 states and 8106 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 06:38:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:34,741 INFO L93 Difference]: Finished difference Result 11965 states and 15594 transitions. [2022-07-12 06:38:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:34,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 214 [2022-07-12 06:38:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:34,753 INFO L225 Difference]: With dead ends: 11965 [2022-07-12 06:38:34,753 INFO L226 Difference]: Without dead ends: 5930 [2022-07-12 06:38:34,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:34,762 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 277 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:34,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 428 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2022-07-12 06:38:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 5772. [2022-07-12 06:38:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 4324 states have (on average 1.299722479185939) internal successors, (5620), 4360 states have internal predecessors, (5620), 943 states have call successors, (943), 504 states have call predecessors, (943), 504 states have return successors, (943), 907 states have call predecessors, (943), 943 states have call successors, (943) [2022-07-12 06:38:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 7506 transitions. [2022-07-12 06:38:35,436 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 7506 transitions. Word has length 214 [2022-07-12 06:38:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:35,437 INFO L495 AbstractCegarLoop]: Abstraction has 5772 states and 7506 transitions. [2022-07-12 06:38:35,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 06:38:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 7506 transitions. [2022-07-12 06:38:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-12 06:38:35,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:35,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 06:38:35,444 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1490841889, now seen corresponding path program 1 times [2022-07-12 06:38:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327530690] [2022-07-12 06:38:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:38:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 06:38:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 06:38:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 06:38:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 06:38:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 06:38:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 06:38:35,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:35,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327530690] [2022-07-12 06:38:35,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327530690] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:35,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857984175] [2022-07-12 06:38:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:35,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:35,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:35,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:35,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:38:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 06:38:35,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 82 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 06:38:36,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 06:38:36,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857984175] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:36,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:36,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2022-07-12 06:38:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427382076] [2022-07-12 06:38:36,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:36,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 06:38:36,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 06:38:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-07-12 06:38:36,707 INFO L87 Difference]: Start difference. First operand 5772 states and 7506 transitions. Second operand has 25 states, 25 states have (on average 12.96) internal successors, (324), 25 states have internal predecessors, (324), 9 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 9 states have call predecessors, (45), 9 states have call successors, (45) [2022-07-12 06:38:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:42,086 INFO L93 Difference]: Finished difference Result 15385 states and 20751 transitions. [2022-07-12 06:38:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 06:38:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.96) internal successors, (324), 25 states have internal predecessors, (324), 9 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 9 states have call predecessors, (45), 9 states have call successors, (45) Word has length 213 [2022-07-12 06:38:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:42,116 INFO L225 Difference]: With dead ends: 15385 [2022-07-12 06:38:42,117 INFO L226 Difference]: Without dead ends: 9908 [2022-07-12 06:38:42,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 444 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=775, Invalid=3647, Unknown=0, NotChecked=0, Total=4422 [2022-07-12 06:38:42,131 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 2808 mSDsluCounter, 7916 mSDsCounter, 0 mSdLazyCounter, 6533 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 8551 SdHoareTripleChecker+Invalid, 8031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 6533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:42,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2808 Valid, 8551 Invalid, 8031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1498 Valid, 6533 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 06:38:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2022-07-12 06:38:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6946. [2022-07-12 06:38:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5206 states have (on average 1.2971571263926238) internal successors, (6753), 5250 states have internal predecessors, (6753), 1128 states have call successors, (1128), 611 states have call predecessors, (1128), 611 states have return successors, (1128), 1084 states have call predecessors, (1128), 1128 states have call successors, (1128) [2022-07-12 06:38:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 9009 transitions. [2022-07-12 06:38:43,276 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 9009 transitions. Word has length 213 [2022-07-12 06:38:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:43,277 INFO L495 AbstractCegarLoop]: Abstraction has 6946 states and 9009 transitions. [2022-07-12 06:38:43,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.96) internal successors, (324), 25 states have internal predecessors, (324), 9 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 9 states have call predecessors, (45), 9 states have call successors, (45) [2022-07-12 06:38:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 9009 transitions. [2022-07-12 06:38:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-12 06:38:43,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:43,287 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:43,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-12 06:38:43,492 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash -842249119, now seen corresponding path program 1 times [2022-07-12 06:38:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:43,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189839093] [2022-07-12 06:38:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:38:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 06:38:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 06:38:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 06:38:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 06:38:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 06:38:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-12 06:38:43,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189839093] [2022-07-12 06:38:43,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189839093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:43,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:43,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098611559] [2022-07-12 06:38:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:43,544 INFO L87 Difference]: Start difference. First operand 6946 states and 9009 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:38:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:44,478 INFO L93 Difference]: Finished difference Result 13114 states and 17079 transitions. [2022-07-12 06:38:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:38:44,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 213 [2022-07-12 06:38:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:44,489 INFO L225 Difference]: With dead ends: 13114 [2022-07-12 06:38:44,489 INFO L226 Difference]: Without dead ends: 6379 [2022-07-12 06:38:44,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:44,494 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 225 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:44,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 440 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2022-07-12 06:38:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 6371. [2022-07-12 06:38:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6371 states, 4785 states have (on average 1.2971786833855798) internal successors, (6207), 4825 states have internal predecessors, (6207), 1031 states have call successors, (1031), 554 states have call predecessors, (1031), 554 states have return successors, (1031), 991 states have call predecessors, (1031), 1031 states have call successors, (1031) [2022-07-12 06:38:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 8269 transitions. [2022-07-12 06:38:45,289 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 8269 transitions. Word has length 213 [2022-07-12 06:38:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:45,289 INFO L495 AbstractCegarLoop]: Abstraction has 6371 states and 8269 transitions. [2022-07-12 06:38:45,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:38:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 8269 transitions. [2022-07-12 06:38:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 06:38:45,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:45,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 06:38:45,294 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 869822417, now seen corresponding path program 1 times [2022-07-12 06:38:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:45,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780223750] [2022-07-12 06:38:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:45,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:38:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:38:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 06:38:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 06:38:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-12 06:38:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 06:38:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 06:38:45,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:45,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780223750] [2022-07-12 06:38:45,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780223750] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:45,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340859533] [2022-07-12 06:38:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:45,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:45,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:45,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:45,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 06:38:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:45,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 06:38:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:38:45,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 06:38:45,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340859533] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:45,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:45,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-07-12 06:38:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483996492] [2022-07-12 06:38:45,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:45,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:38:45,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:38:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:38:45,897 INFO L87 Difference]: Start difference. First operand 6371 states and 8269 transitions. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 9 states have internal predecessors, (192), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-12 06:38:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:47,812 INFO L93 Difference]: Finished difference Result 18033 states and 23421 transitions. [2022-07-12 06:38:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 06:38:47,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 9 states have internal predecessors, (192), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 215 [2022-07-12 06:38:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:47,832 INFO L225 Difference]: With dead ends: 18033 [2022-07-12 06:38:47,832 INFO L226 Difference]: Without dead ends: 11957 [2022-07-12 06:38:47,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-12 06:38:47,842 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 743 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:47,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 3229 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11957 states. [2022-07-12 06:38:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11957 to 9094. [2022-07-12 06:38:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 6883 states have (on average 1.2818538428011041) internal successors, (8823), 6951 states have internal predecessors, (8823), 1421 states have call successors, (1421), 789 states have call predecessors, (1421), 789 states have return successors, (1421), 1353 states have call predecessors, (1421), 1421 states have call successors, (1421) [2022-07-12 06:38:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 11665 transitions. [2022-07-12 06:38:49,082 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 11665 transitions. Word has length 215 [2022-07-12 06:38:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:49,083 INFO L495 AbstractCegarLoop]: Abstraction has 9094 states and 11665 transitions. [2022-07-12 06:38:49,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 9 states have internal predecessors, (192), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-12 06:38:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 11665 transitions. [2022-07-12 06:38:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-12 06:38:49,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:49,087 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:49,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:49,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:49,302 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1951760898, now seen corresponding path program 1 times [2022-07-12 06:38:49,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:49,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127910394] [2022-07-12 06:38:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 06:38:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 06:38:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-12 06:38:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 06:38:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-12 06:38:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-12 06:38:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 06:38:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:49,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127910394] [2022-07-12 06:38:49,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127910394] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:49,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058631547] [2022-07-12 06:38:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:49,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:49,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:49,597 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:49,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 06:38:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:49,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 06:38:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 06:38:50,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 06:38:50,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058631547] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:50,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:50,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 10] total 22 [2022-07-12 06:38:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091727508] [2022-07-12 06:38:50,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:50,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 06:38:50,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 06:38:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-12 06:38:50,952 INFO L87 Difference]: Start difference. First operand 9094 states and 11665 transitions. Second operand has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-12 06:38:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:56,051 INFO L93 Difference]: Finished difference Result 21510 states and 28883 transitions. [2022-07-12 06:38:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 06:38:56,052 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 214 [2022-07-12 06:38:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:56,086 INFO L225 Difference]: With dead ends: 21510 [2022-07-12 06:38:56,086 INFO L226 Difference]: Without dead ends: 14718 [2022-07-12 06:38:56,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=643, Invalid=1907, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 06:38:56,100 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 6048 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 2315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6048 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 4964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2315 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:56,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6048 Valid, 3301 Invalid, 4964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2315 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 06:38:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14718 states. [2022-07-12 06:38:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14718 to 9094. [2022-07-12 06:38:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 6883 states have (on average 1.2789481330815051) internal successors, (8803), 6951 states have internal predecessors, (8803), 1421 states have call successors, (1421), 789 states have call predecessors, (1421), 789 states have return successors, (1421), 1353 states have call predecessors, (1421), 1421 states have call successors, (1421) [2022-07-12 06:38:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 11645 transitions. [2022-07-12 06:38:57,524 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 11645 transitions. Word has length 214 [2022-07-12 06:38:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:57,525 INFO L495 AbstractCegarLoop]: Abstraction has 9094 states and 11645 transitions. [2022-07-12 06:38:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-12 06:38:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 11645 transitions. [2022-07-12 06:38:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 06:38:57,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:57,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:57,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-12 06:38:57,746 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1602789837, now seen corresponding path program 1 times [2022-07-12 06:38:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:57,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153202583] [2022-07-12 06:38:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:38:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:38:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:38:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:38:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:38:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:38:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:38:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:38:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:38:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:38:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:38:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 06:38:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:38:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 06:38:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 06:38:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 06:38:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 06:38:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 06:38:57,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:57,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153202583] [2022-07-12 06:38:57,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153202583] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:57,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731221382] [2022-07-12 06:38:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:57,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:57,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:57,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:57,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 06:38:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 06:38:58,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 06:38:58,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 06:38:58,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731221382] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:58,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:58,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 14 [2022-07-12 06:38:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884964445] [2022-07-12 06:38:58,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:58,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 06:38:58,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 06:38:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:38:58,369 INFO L87 Difference]: Start difference. First operand 9094 states and 11645 transitions. Second operand has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-12 06:39:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:05,675 INFO L93 Difference]: Finished difference Result 40327 states and 54874 transitions. [2022-07-12 06:39:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-12 06:39:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 215 [2022-07-12 06:39:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:05,743 INFO L225 Difference]: With dead ends: 40327 [2022-07-12 06:39:05,743 INFO L226 Difference]: Without dead ends: 32125 [2022-07-12 06:39:05,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2014 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=5054, Unknown=0, NotChecked=0, Total=6006 [2022-07-12 06:39:05,760 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 2243 mSDsluCounter, 9098 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 10372 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:05,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 10372 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:39:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32125 states. [2022-07-12 06:39:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32125 to 18129. [2022-07-12 06:39:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18129 states, 13989 states have (on average 1.2802916577310743) internal successors, (17910), 14108 states have internal predecessors, (17910), 2627 states have call successors, (2627), 1512 states have call predecessors, (2627), 1512 states have return successors, (2627), 2508 states have call predecessors, (2627), 2627 states have call successors, (2627) [2022-07-12 06:39:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18129 states to 18129 states and 23164 transitions. [2022-07-12 06:39:08,638 INFO L78 Accepts]: Start accepts. Automaton has 18129 states and 23164 transitions. Word has length 215 [2022-07-12 06:39:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:08,639 INFO L495 AbstractCegarLoop]: Abstraction has 18129 states and 23164 transitions. [2022-07-12 06:39:08,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-12 06:39:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 18129 states and 23164 transitions. [2022-07-12 06:39:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 06:39:08,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:08,646 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:08,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 06:39:08,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:08,864 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -954197067, now seen corresponding path program 1 times [2022-07-12 06:39:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:08,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960380748] [2022-07-12 06:39:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:39:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:39:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:39:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:39:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:39:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:39:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:39:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:39:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:39:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:39:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 06:39:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:39:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 06:39:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 06:39:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 06:39:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 06:39:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 06:39:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:08,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960380748] [2022-07-12 06:39:08,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960380748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:08,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:08,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:39:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775277576] [2022-07-12 06:39:08,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:39:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:39:08,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:39:08,911 INFO L87 Difference]: Start difference. First operand 18129 states and 23164 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:39:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:11,039 INFO L93 Difference]: Finished difference Result 31087 states and 39877 transitions. [2022-07-12 06:39:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:39:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 215 [2022-07-12 06:39:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:11,067 INFO L225 Difference]: With dead ends: 31087 [2022-07-12 06:39:11,067 INFO L226 Difference]: Without dead ends: 13896 [2022-07-12 06:39:11,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:39:11,087 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 232 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:11,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 437 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:39:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13896 states. [2022-07-12 06:39:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13896 to 13853. [2022-07-12 06:39:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13853 states, 10770 states have (on average 1.280594243268338) internal successors, (13792), 10855 states have internal predecessors, (13792), 1958 states have call successors, (1958), 1124 states have call predecessors, (1958), 1124 states have return successors, (1958), 1873 states have call predecessors, (1958), 1958 states have call successors, (1958) [2022-07-12 06:39:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13853 states to 13853 states and 17708 transitions. [2022-07-12 06:39:13,148 INFO L78 Accepts]: Start accepts. Automaton has 13853 states and 17708 transitions. Word has length 215 [2022-07-12 06:39:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:13,148 INFO L495 AbstractCegarLoop]: Abstraction has 13853 states and 17708 transitions. [2022-07-12 06:39:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:39:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 13853 states and 17708 transitions. [2022-07-12 06:39:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-12 06:39:13,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:13,153 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:13,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 06:39:13,153 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash -763015856, now seen corresponding path program 1 times [2022-07-12 06:39:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:13,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278858782] [2022-07-12 06:39:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:13,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:39:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:39:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:39:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:39:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:39:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:39:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:39:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:39:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:39:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:39:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 06:39:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 06:39:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 06:39:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-12 06:39:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 06:39:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 06:39:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-12 06:39:13,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:13,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278858782] [2022-07-12 06:39:13,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278858782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:13,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:13,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:39:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271155650] [2022-07-12 06:39:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:39:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:39:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:39:13,215 INFO L87 Difference]: Start difference. First operand 13853 states and 17708 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:39:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:17,656 INFO L93 Difference]: Finished difference Result 36689 states and 47893 transitions. [2022-07-12 06:39:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:39:17,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 217 [2022-07-12 06:39:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:17,703 INFO L225 Difference]: With dead ends: 36689 [2022-07-12 06:39:17,703 INFO L226 Difference]: Without dead ends: 26489 [2022-07-12 06:39:17,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:39:17,716 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 602 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:17,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 2892 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:39:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26489 states. [2022-07-12 06:39:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26489 to 17226. [2022-07-12 06:39:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13217 states have (on average 1.2718468638874176) internal successors, (16810), 13336 states have internal predecessors, (16810), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-12 06:39:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 21902 transitions. [2022-07-12 06:39:20,500 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 21902 transitions. Word has length 217 [2022-07-12 06:39:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:20,501 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 21902 transitions. [2022-07-12 06:39:20,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:39:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 21902 transitions. [2022-07-12 06:39:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-12 06:39:20,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:20,508 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:20,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-12 06:39:20,508 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1737845505, now seen corresponding path program 1 times [2022-07-12 06:39:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:20,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377457704] [2022-07-12 06:39:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:39:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:39:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:39:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:39:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:39:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:39:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:39:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:39:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:39:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 06:39:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 06:39:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:39:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 06:39:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 06:39:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 06:39:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:39:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-12 06:39:20,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:20,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377457704] [2022-07-12 06:39:20,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377457704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:39:20,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207588999] [2022-07-12 06:39:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:20,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:20,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:39:20,646 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:39:20,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 06:39:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 06:39:20,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:39:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 06:39:20,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:39:20,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207588999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:20,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:39:20,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-12 06:39:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334625663] [2022-07-12 06:39:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:39:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:39:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:39:20,901 INFO L87 Difference]: Start difference. First operand 17226 states and 21902 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 06:39:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:24,644 INFO L93 Difference]: Finished difference Result 37262 states and 48539 transitions. [2022-07-12 06:39:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:39:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 218 [2022-07-12 06:39:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:24,686 INFO L225 Difference]: With dead ends: 37262 [2022-07-12 06:39:24,686 INFO L226 Difference]: Without dead ends: 21174 [2022-07-12 06:39:24,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:39:24,702 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 689 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:24,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2202 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:39:24,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21174 states. [2022-07-12 06:39:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21174 to 17226. [2022-07-12 06:39:27,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13217 states have (on average 1.2655670727093895) internal successors, (16727), 13336 states have internal predecessors, (16727), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-12 06:39:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 21819 transitions. [2022-07-12 06:39:27,393 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 21819 transitions. Word has length 218 [2022-07-12 06:39:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:27,393 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 21819 transitions. [2022-07-12 06:39:27,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 06:39:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 21819 transitions. [2022-07-12 06:39:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-12 06:39:27,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:27,400 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:27,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 06:39:27,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-12 06:39:27,605 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1287533947, now seen corresponding path program 1 times [2022-07-12 06:39:27,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:27,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570425304] [2022-07-12 06:39:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:27,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:39:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:39:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:39:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:39:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:39:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:39:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:39:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:39:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:39:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:39:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 06:39:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:39:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 06:39:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 06:39:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 06:39:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 06:39:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 06:39:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 06:39:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:27,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570425304] [2022-07-12 06:39:27,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570425304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:39:27,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338323885] [2022-07-12 06:39:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:39:27,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:39:27,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 06:39:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:27,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 06:39:27,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:39:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 06:39:28,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:39:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 06:39:28,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338323885] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:39:28,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:39:28,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-12 06:39:28,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387355184] [2022-07-12 06:39:28,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:39:28,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:39:28,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:39:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:39:28,296 INFO L87 Difference]: Start difference. First operand 17226 states and 21819 transitions. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-12 06:39:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:32,235 INFO L93 Difference]: Finished difference Result 33253 states and 42454 transitions. [2022-07-12 06:39:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 06:39:32,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 223 [2022-07-12 06:39:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:32,279 INFO L225 Difference]: With dead ends: 33253 [2022-07-12 06:39:32,279 INFO L226 Difference]: Without dead ends: 20283 [2022-07-12 06:39:32,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-12 06:39:32,299 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1462 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 5225 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:32,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 5225 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:39:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2022-07-12 06:39:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 17226. [2022-07-12 06:39:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13217 states have (on average 1.2617840659756374) internal successors, (16677), 13336 states have internal predecessors, (16677), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-12 06:39:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 21769 transitions. [2022-07-12 06:39:35,303 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 21769 transitions. Word has length 223 [2022-07-12 06:39:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:35,303 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 21769 transitions. [2022-07-12 06:39:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-12 06:39:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 21769 transitions. [2022-07-12 06:39:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-12 06:39:35,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:35,310 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:35,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 06:39:35,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-12 06:39:35,527 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -477408815, now seen corresponding path program 1 times [2022-07-12 06:39:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:35,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817908830] [2022-07-12 06:39:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:39:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:39:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:39:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:39:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:39:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:39:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:39:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:39:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:39:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:39:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 06:39:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:39:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 06:39:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 06:39:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 06:39:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 06:39:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 06:39:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 06:39:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817908830] [2022-07-12 06:39:35,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817908830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:35,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:35,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:39:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428919335] [2022-07-12 06:39:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:39:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:39:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:39:35,632 INFO L87 Difference]: Start difference. First operand 17226 states and 21769 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 06:39:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:39,594 INFO L93 Difference]: Finished difference Result 33917 states and 43917 transitions. [2022-07-12 06:39:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:39:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 223 [2022-07-12 06:39:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:39,639 INFO L225 Difference]: With dead ends: 33917 [2022-07-12 06:39:39,639 INFO L226 Difference]: Without dead ends: 21333 [2022-07-12 06:39:39,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:39:39,659 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 718 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:39,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 2367 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:39:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2022-07-12 06:39:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 17217. [2022-07-12 06:39:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17217 states, 13208 states have (on average 1.2605996365838885) internal successors, (16650), 13327 states have internal predecessors, (16650), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-12 06:39:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17217 states to 17217 states and 21742 transitions. [2022-07-12 06:39:42,593 INFO L78 Accepts]: Start accepts. Automaton has 17217 states and 21742 transitions. Word has length 223 [2022-07-12 06:39:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:42,593 INFO L495 AbstractCegarLoop]: Abstraction has 17217 states and 21742 transitions. [2022-07-12 06:39:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 06:39:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 17217 states and 21742 transitions. [2022-07-12 06:39:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 06:39:42,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:42,600 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:42,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-12 06:39:42,600 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1443868945, now seen corresponding path program 1 times [2022-07-12 06:39:42,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:42,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328875937] [2022-07-12 06:39:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:42,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:39:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:39:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:39:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:39:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:39:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:39:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:39:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:39:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:39:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 06:39:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 06:39:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 06:39:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 06:39:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 06:39:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 06:39:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:39:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-12 06:39:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 06:39:42,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328875937] [2022-07-12 06:39:42,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328875937] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:39:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119257304] [2022-07-12 06:39:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:42,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:42,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:39:42,697 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:39:42,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 06:39:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:42,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 06:39:42,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:39:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 06:39:43,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:39:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-12 06:39:43,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119257304] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:39:43,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:39:43,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-12 06:39:43,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245446788] [2022-07-12 06:39:43,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:39:43,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 06:39:43,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 06:39:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:39:43,148 INFO L87 Difference]: Start difference. First operand 17217 states and 21742 transitions. Second operand has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-12 06:39:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:51,543 INFO L93 Difference]: Finished difference Result 46088 states and 61283 transitions. [2022-07-12 06:39:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-12 06:39:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 226 [2022-07-12 06:39:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:51,616 INFO L225 Difference]: With dead ends: 46088 [2022-07-12 06:39:51,616 INFO L226 Difference]: Without dead ends: 30411 [2022-07-12 06:39:51,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-12 06:39:51,642 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 2596 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 1260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 5759 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1260 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:51,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 5759 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1260 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:39:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30411 states. [2022-07-12 06:39:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30411 to 17603. [2022-07-12 06:39:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17603 states, 13556 states have (on average 1.259294777220419) internal successors, (17071), 13674 states have internal predecessors, (17071), 2565 states have call successors, (2565), 1481 states have call predecessors, (2565), 1481 states have return successors, (2565), 2447 states have call predecessors, (2565), 2565 states have call successors, (2565) [2022-07-12 06:39:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 22201 transitions. [2022-07-12 06:39:54,932 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 22201 transitions. Word has length 226 [2022-07-12 06:39:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:54,932 INFO L495 AbstractCegarLoop]: Abstraction has 17603 states and 22201 transitions. [2022-07-12 06:39:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-12 06:39:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 22201 transitions. [2022-07-12 06:39:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-12 06:39:54,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:54,939 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:39:54,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 06:39:55,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-12 06:39:55,160 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:55,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:55,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1948276665, now seen corresponding path program 1 times [2022-07-12 06:39:55,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:55,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139543932] [2022-07-12 06:39:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:39:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:39:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:39:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:39:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:39:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:39:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:39:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:39:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:39:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:39:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:39:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 06:39:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 06:39:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-12 06:39:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 06:39:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 06:39:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 06:39:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 06:39:55,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:55,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139543932] [2022-07-12 06:39:55,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139543932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:55,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:55,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:39:55,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229373016] [2022-07-12 06:39:55,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:55,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:39:55,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:39:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:39:55,213 INFO L87 Difference]: Start difference. First operand 17603 states and 22201 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 06:39:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:59,011 INFO L93 Difference]: Finished difference Result 34852 states and 44433 transitions. [2022-07-12 06:39:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:39:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 225 [2022-07-12 06:39:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:59,059 INFO L225 Difference]: With dead ends: 34852 [2022-07-12 06:39:59,060 INFO L226 Difference]: Without dead ends: 21791 [2022-07-12 06:39:59,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:39:59,079 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 452 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:59,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1275 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:39:59,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21791 states. [2022-07-12 06:40:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21791 to 20155. [2022-07-12 06:40:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20155 states, 15459 states have (on average 1.2544149039394528) internal successors, (19392), 15595 states have internal predecessors, (19392), 2981 states have call successors, (2981), 1714 states have call predecessors, (2981), 1714 states have return successors, (2981), 2845 states have call predecessors, (2981), 2981 states have call successors, (2981) [2022-07-12 06:40:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20155 states to 20155 states and 25354 transitions. [2022-07-12 06:40:02,658 INFO L78 Accepts]: Start accepts. Automaton has 20155 states and 25354 transitions. Word has length 225 [2022-07-12 06:40:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:02,659 INFO L495 AbstractCegarLoop]: Abstraction has 20155 states and 25354 transitions. [2022-07-12 06:40:02,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 06:40:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 20155 states and 25354 transitions. [2022-07-12 06:40:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 06:40:02,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:02,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:40:02,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-12 06:40:02,668 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:02,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1647592022, now seen corresponding path program 1 times [2022-07-12 06:40:02,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:02,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786294886] [2022-07-12 06:40:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:02,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:40:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:40:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:40:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:40:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:40:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:40:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:40:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:40:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:40:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:40:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-12 06:40:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 06:40:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 06:40:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 06:40:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 06:40:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:40:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 06:40:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 06:40:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:02,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786294886] [2022-07-12 06:40:02,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786294886] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:02,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803643594] [2022-07-12 06:40:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:02,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:02,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:02,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:02,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 06:40:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:03,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 06:40:03,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 91 proven. 23 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 06:40:03,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:40:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 06:40:04,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803643594] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:40:04,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:40:04,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 21 [2022-07-12 06:40:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336721556] [2022-07-12 06:40:04,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:40:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 06:40:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 06:40:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:40:04,062 INFO L87 Difference]: Start difference. First operand 20155 states and 25354 transitions. Second operand has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-12 06:40:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:12,289 INFO L93 Difference]: Finished difference Result 43273 states and 55976 transitions. [2022-07-12 06:40:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 06:40:12,290 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) Word has length 226 [2022-07-12 06:40:12,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:12,361 INFO L225 Difference]: With dead ends: 43273 [2022-07-12 06:40:12,377 INFO L226 Difference]: Without dead ends: 26064 [2022-07-12 06:40:12,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 478 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2022-07-12 06:40:12,398 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4989 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 2314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 5379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2314 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:12,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4990 Valid, 3377 Invalid, 5379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2314 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 06:40:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26064 states. [2022-07-12 06:40:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26064 to 19644. [2022-07-12 06:40:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19644 states, 15057 states have (on average 1.251378096566381) internal successors, (18842), 15188 states have internal predecessors, (18842), 2912 states have call successors, (2912), 1674 states have call predecessors, (2912), 1674 states have return successors, (2912), 2781 states have call predecessors, (2912), 2912 states have call successors, (2912) [2022-07-12 06:40:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19644 states to 19644 states and 24666 transitions. [2022-07-12 06:40:16,104 INFO L78 Accepts]: Start accepts. Automaton has 19644 states and 24666 transitions. Word has length 226 [2022-07-12 06:40:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:16,104 INFO L495 AbstractCegarLoop]: Abstraction has 19644 states and 24666 transitions. [2022-07-12 06:40:16,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-12 06:40:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 19644 states and 24666 transitions. [2022-07-12 06:40:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-12 06:40:16,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:16,111 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:40:16,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 06:40:16,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-12 06:40:16,330 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1284695429, now seen corresponding path program 1 times [2022-07-12 06:40:16,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:16,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042325122] [2022-07-12 06:40:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:40:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:40:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:40:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:40:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:40:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:40:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:40:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:40:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:40:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:40:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 06:40:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 06:40:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 06:40:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 06:40:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:40:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 06:40:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 06:40:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 06:40:16,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:16,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042325122] [2022-07-12 06:40:16,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042325122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:16,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209994501] [2022-07-12 06:40:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:16,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:16,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:16,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:16,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 06:40:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 06:40:16,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 51 proven. 67 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 06:40:16,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:40:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 06:40:17,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209994501] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:40:17,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:40:17,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-12 06:40:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498118707] [2022-07-12 06:40:17,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:40:17,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:40:17,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:17,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:40:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:40:17,065 INFO L87 Difference]: Start difference. First operand 19644 states and 24666 transitions. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-12 06:40:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:23,650 INFO L93 Difference]: Finished difference Result 42562 states and 55402 transitions. [2022-07-12 06:40:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 06:40:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 229 [2022-07-12 06:40:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:23,717 INFO L225 Difference]: With dead ends: 42562 [2022-07-12 06:40:23,717 INFO L226 Difference]: Without dead ends: 27209 [2022-07-12 06:40:23,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-12 06:40:23,737 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1244 mSDsluCounter, 3925 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 5030 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:23,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 5030 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:40:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27209 states. [2022-07-12 06:40:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27209 to 18923. [2022-07-12 06:40:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18923 states, 14532 states have (on average 1.2470410129369667) internal successors, (18122), 14661 states have internal predecessors, (18122), 2739 states have call successors, (2739), 1651 states have call predecessors, (2739), 1651 states have return successors, (2739), 2610 states have call predecessors, (2739), 2739 states have call successors, (2739) [2022-07-12 06:40:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18923 states to 18923 states and 23600 transitions. [2022-07-12 06:40:27,451 INFO L78 Accepts]: Start accepts. Automaton has 18923 states and 23600 transitions. Word has length 229 [2022-07-12 06:40:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:27,451 INFO L495 AbstractCegarLoop]: Abstraction has 18923 states and 23600 transitions. [2022-07-12 06:40:27,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-12 06:40:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18923 states and 23600 transitions. [2022-07-12 06:40:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-12 06:40:27,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:27,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:40:27,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 06:40:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:27,675 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1461146357, now seen corresponding path program 1 times [2022-07-12 06:40:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:27,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64651380] [2022-07-12 06:40:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:40:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:40:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:40:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:40:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:40:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:40:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:40:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:40:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:40:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:40:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 06:40:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 06:40:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 06:40:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 06:40:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 06:40:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 06:40:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 06:40:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 06:40:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-12 06:40:27,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:27,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64651380] [2022-07-12 06:40:27,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64651380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:27,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856392062] [2022-07-12 06:40:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:27,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:27,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:27,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:27,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 06:40:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:28,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 06:40:28,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 46 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:40:28,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:40:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-12 06:40:28,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856392062] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:40:28,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:40:28,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-07-12 06:40:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186199338] [2022-07-12 06:40:28,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:40:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 06:40:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 06:40:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:40:28,425 INFO L87 Difference]: Start difference. First operand 18923 states and 23600 transitions. Second operand has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-12 06:40:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:39,747 INFO L93 Difference]: Finished difference Result 51050 states and 65398 transitions. [2022-07-12 06:40:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-12 06:40:39,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 231 [2022-07-12 06:40:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:39,838 INFO L225 Difference]: With dead ends: 51050 [2022-07-12 06:40:39,838 INFO L226 Difference]: Without dead ends: 36206 [2022-07-12 06:40:39,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-07-12 06:40:39,862 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 4162 mSDsluCounter, 10465 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 1866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 11752 SdHoareTripleChecker+Invalid, 4902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1866 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:39,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 11752 Invalid, 4902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1866 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 06:40:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36206 states. [2022-07-12 06:40:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36206 to 18631. [2022-07-12 06:40:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18631 states, 14268 states have (on average 1.2433417437622651) internal successors, (17740), 14396 states have internal predecessors, (17740), 2695 states have call successors, (2695), 1667 states have call predecessors, (2695), 1667 states have return successors, (2695), 2567 states have call predecessors, (2695), 2695 states have call successors, (2695) [2022-07-12 06:40:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18631 states to 18631 states and 23130 transitions. [2022-07-12 06:40:44,194 INFO L78 Accepts]: Start accepts. Automaton has 18631 states and 23130 transitions. Word has length 231 [2022-07-12 06:40:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:44,194 INFO L495 AbstractCegarLoop]: Abstraction has 18631 states and 23130 transitions. [2022-07-12 06:40:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-12 06:40:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 18631 states and 23130 transitions. [2022-07-12 06:40:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-12 06:40:44,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:44,202 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:40:44,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-12 06:40:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:44,416 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash -175213371, now seen corresponding path program 1 times [2022-07-12 06:40:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:44,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84749156] [2022-07-12 06:40:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:40:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:40:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:40:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:40:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:40:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:40:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:40:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:40:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:40:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:40:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 06:40:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 06:40:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 06:40:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 06:40:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-12 06:40:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-12 06:40:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 06:40:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 06:40:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-12 06:40:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 06:40:44,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:44,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84749156] [2022-07-12 06:40:44,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84749156] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:44,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176073043] [2022-07-12 06:40:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:44,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:44,555 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:44,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 06:40:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:44,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 06:40:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 114 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 06:40:45,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:40:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 06:40:45,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176073043] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:40:45,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:40:45,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-07-12 06:40:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984877883] [2022-07-12 06:40:45,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:40:45,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 06:40:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:45,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 06:40:45,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-12 06:40:45,794 INFO L87 Difference]: Start difference. First operand 18631 states and 23130 transitions. Second operand has 25 states, 25 states have (on average 15.44) internal successors, (386), 25 states have internal predecessors, (386), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-07-12 06:41:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:41:52,407 INFO L93 Difference]: Finished difference Result 122906 states and 163271 transitions. [2022-07-12 06:41:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 722 states. [2022-07-12 06:41:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 15.44) internal successors, (386), 25 states have internal predecessors, (386), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) Word has length 235 [2022-07-12 06:41:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:41:52,719 INFO L225 Difference]: With dead ends: 122906 [2022-07-12 06:41:52,719 INFO L226 Difference]: Without dead ends: 105749 [2022-07-12 06:41:52,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259074 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=44537, Invalid=503803, Unknown=0, NotChecked=0, Total=548340 [2022-07-12 06:41:52,800 INFO L413 NwaCegarLoop]: 1349 mSDtfsCounter, 17111 mSDsluCounter, 15782 mSDsCounter, 0 mSdLazyCounter, 24999 mSolverCounterSat, 9102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17111 SdHoareTripleChecker+Valid, 17131 SdHoareTripleChecker+Invalid, 34101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9102 IncrementalHoareTripleChecker+Valid, 24999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:41:52,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17111 Valid, 17131 Invalid, 34101 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9102 Valid, 24999 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-07-12 06:41:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105749 states. [2022-07-12 06:42:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105749 to 38259. [2022-07-12 06:42:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38259 states, 29960 states have (on average 1.2386181575433912) internal successors, (37109), 30190 states have internal predecessors, (37109), 5073 states have call successors, (5073), 3225 states have call predecessors, (5073), 3225 states have return successors, (5073), 4843 states have call predecessors, (5073), 5073 states have call successors, (5073) [2022-07-12 06:42:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38259 states to 38259 states and 47255 transitions. [2022-07-12 06:42:02,761 INFO L78 Accepts]: Start accepts. Automaton has 38259 states and 47255 transitions. Word has length 235 [2022-07-12 06:42:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:42:02,763 INFO L495 AbstractCegarLoop]: Abstraction has 38259 states and 47255 transitions. [2022-07-12 06:42:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.44) internal successors, (386), 25 states have internal predecessors, (386), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-07-12 06:42:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 38259 states and 47255 transitions. [2022-07-12 06:42:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-12 06:42:02,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:42:02,778 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:42:02,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-12 06:42:02,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:42:02,995 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:42:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:42:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash -418538582, now seen corresponding path program 1 times [2022-07-12 06:42:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:42:02,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969139338] [2022-07-12 06:42:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:42:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:42:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:42:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:42:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:42:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:42:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:42:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:42:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:42:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:42:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:42:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:42:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:42:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 06:42:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 06:42:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 06:42:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 06:42:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-12 06:42:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-12 06:42:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 06:42:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-12 06:42:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 06:42:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:42:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-12 06:42:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:42:03,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969139338] [2022-07-12 06:42:03,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969139338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:42:03,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:42:03,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:42:03,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953898977] [2022-07-12 06:42:03,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:42:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:42:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:42:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:42:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:42:03,043 INFO L87 Difference]: Start difference. First operand 38259 states and 47255 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)