./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/combinations/Problem05_label45+token_ring.08.cil-2.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 15863afe4e938ca9562edf6cb3dc5bb7e439eb995cb0a1376182d98c80d63507 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:59:26,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:59:26,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:59:26,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:59:26,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:59:26,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:59:26,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:59:26,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:59:26,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:59:26,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:59:26,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:59:26,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:59:26,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:59:26,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:59:26,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:59:26,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:59:26,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:59:26,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:59:26,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:59:26,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:59:26,512 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:59:26,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:59:26,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:59:26,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:59:26,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:59:26,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:59:26,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:59:26,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:59:26,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:59:26,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:59:26,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:59:26,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:59:26,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:59:26,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:59:26,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:59:26,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:59:26,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:59:26,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:59:26,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:59:26,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:59:26,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:59:26,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:59:26,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:59:26,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:59:26,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:59:26,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:59:26,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:59:26,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:59:26,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:59:26,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:59:26,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:59:26,582 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:59:26,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:59:26,583 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:59:26,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:59:26,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:59:26,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:59:26,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:59:26,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:59:26,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:59:26,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:59:26,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:59:26,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:59:26,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:59:26,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:59:26,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:59:26,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:59:26,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:59:26,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:59:26,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:59:26,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:59:26,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:59:26,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:59:26,588 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:59:26,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:59:26,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:59:26,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15863afe4e938ca9562edf6cb3dc5bb7e439eb995cb0a1376182d98c80d63507 [2022-07-21 06:59:26,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:59:26,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:59:26,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:59:26,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:59:26,904 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:59:26,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-2.c [2022-07-21 06:59:26,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f21d89f/5f418ba462b24da29ea00058f543c781/FLAG9e1945a3a [2022-07-21 06:59:27,882 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:59:27,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-2.c [2022-07-21 06:59:27,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f21d89f/5f418ba462b24da29ea00058f543c781/FLAG9e1945a3a [2022-07-21 06:59:28,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f21d89f/5f418ba462b24da29ea00058f543c781 [2022-07-21 06:59:28,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:59:28,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:59:28,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:59:28,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:59:28,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:59:28,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:59:28" (1/1) ... [2022-07-21 06:59:28,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3be1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:28, skipping insertion in model container [2022-07-21 06:59:28,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:59:28" (1/1) ... [2022-07-21 06:59:28,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:59:28,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:59:30,135 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/combinations/Problem05_label45+token_ring.08.cil-2.c[380323,380336] [2022-07-21 06:59:30,172 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/combinations/Problem05_label45+token_ring.08.cil-2.c[383339,383352] [2022-07-21 06:59:30,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:59:30,409 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:59:31,356 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/combinations/Problem05_label45+token_ring.08.cil-2.c[380323,380336] [2022-07-21 06:59:31,361 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/combinations/Problem05_label45+token_ring.08.cil-2.c[383339,383352] [2022-07-21 06:59:31,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:59:31,438 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:59:31,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31 WrapperNode [2022-07-21 06:59:31,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:59:31,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:59:31,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:59:31,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:59:31,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:31,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:31,955 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2022-07-21 06:59:31,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:59:31,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:59:31,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:59:31,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:59:31,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:31,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:59:32,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:59:32,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:59:32,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:59:32,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (1/1) ... [2022-07-21 06:59:32,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:59:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:59:32,502 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) [2022-07-21 06:59:32,527 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 [2022-07-21 06:59:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:59:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 06:59:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 06:59:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 06:59:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 06:59:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 06:59:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 06:59:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-21 06:59:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-21 06:59:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 06:59:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 06:59:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 06:59:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 06:59:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 06:59:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 06:59:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:59:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:59:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:59:32,655 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:59:32,656 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:59:38,889 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:59:38,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:59:38,925 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-21 06:59:38,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:59:38 BoogieIcfgContainer [2022-07-21 06:59:38,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:59:38,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:59:38,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:59:38,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:59:38,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:59:28" (1/3) ... [2022-07-21 06:59:38,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a203e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:59:38, skipping insertion in model container [2022-07-21 06:59:38,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:59:31" (2/3) ... [2022-07-21 06:59:38,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a203e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:59:38, skipping insertion in model container [2022-07-21 06:59:38,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:59:38" (3/3) ... [2022-07-21 06:59:38,940 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.08.cil-2.c [2022-07-21 06:59:38,954 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:59:38,954 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 06:59:39,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:59:39,062 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@733d4bfe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8c0bd2f [2022-07-21 06:59:39,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 06:59:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 06:59:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:39,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:39,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:39,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2022-07-21 06:59:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:39,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831899004] [2022-07-21 06:59:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831899004] [2022-07-21 06:59:39,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831899004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:39,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:39,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:59:39,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841618898] [2022-07-21 06:59:39,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:59:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:39,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:59:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:59:39,506 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:40,866 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2022-07-21 06:59:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 06:59:40,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:40,901 INFO L225 Difference]: With dead ends: 5037 [2022-07-21 06:59:40,901 INFO L226 Difference]: Without dead ends: 2503 [2022-07-21 06:59:40,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:59:40,916 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16890 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:40,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 16890 Invalid, 567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 06:59:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2022-07-21 06:59:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2022-07-21 06:59:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 06:59:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2022-07-21 06:59:41,083 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2022-07-21 06:59:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:41,084 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2022-07-21 06:59:41,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2022-07-21 06:59:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:41,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:41,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:41,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:59:41,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:41,092 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2022-07-21 06:59:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:41,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414317387] [2022-07-21 06:59:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414317387] [2022-07-21 06:59:41,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414317387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:41,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:41,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:59:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131239174] [2022-07-21 06:59:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:59:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:59:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:59:41,328 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:43,438 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2022-07-21 06:59:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:59:43,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:43,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:43,454 INFO L225 Difference]: With dead ends: 3147 [2022-07-21 06:59:43,455 INFO L226 Difference]: Without dead ends: 2879 [2022-07-21 06:59:43,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:59:43,461 INFO L413 NwaCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12604 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:43,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5081 Valid, 17082 Invalid, 1543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 06:59:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2022-07-21 06:59:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2022-07-21 06:59:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-21 06:59:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2022-07-21 06:59:43,559 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2022-07-21 06:59:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:43,561 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2022-07-21 06:59:43,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2022-07-21 06:59:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:43,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:43,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:59:43,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2022-07-21 06:59:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:43,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578494114] [2022-07-21 06:59:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:43,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578494114] [2022-07-21 06:59:43,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578494114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:43,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:43,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:59:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328844662] [2022-07-21 06:59:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:59:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:59:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:59:43,708 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:46,271 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2022-07-21 06:59:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:59:46,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:46,289 INFO L225 Difference]: With dead ends: 3810 [2022-07-21 06:59:46,295 INFO L226 Difference]: Without dead ends: 3265 [2022-07-21 06:59:46,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:59:46,304 INFO L413 NwaCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:46,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5093 Valid, 21976 Invalid, 2304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 06:59:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2022-07-21 06:59:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2022-07-21 06:59:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-21 06:59:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2022-07-21 06:59:46,433 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2022-07-21 06:59:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:46,433 INFO L495 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2022-07-21 06:59:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2022-07-21 06:59:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:46,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:46,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:46,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:59:46,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2022-07-21 06:59:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:46,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077750506] [2022-07-21 06:59:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:46,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:46,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077750506] [2022-07-21 06:59:46,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077750506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:46,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:46,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:59:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737083883] [2022-07-21 06:59:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:59:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:59:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:59:46,557 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:48,690 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2022-07-21 06:59:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:59:48,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:48,710 INFO L225 Difference]: With dead ends: 4787 [2022-07-21 06:59:48,710 INFO L226 Difference]: Without dead ends: 3984 [2022-07-21 06:59:48,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:59:48,716 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16785 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21291 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:48,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 21291 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 06:59:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-07-21 06:59:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2022-07-21 06:59:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-21 06:59:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2022-07-21 06:59:48,866 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2022-07-21 06:59:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:48,869 INFO L495 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2022-07-21 06:59:48,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2022-07-21 06:59:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:48,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:48,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:48,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:59:48,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2022-07-21 06:59:48,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:48,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463598091] [2022-07-21 06:59:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:48,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463598091] [2022-07-21 06:59:48,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463598091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:48,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:48,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:59:48,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099722699] [2022-07-21 06:59:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:48,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:59:48,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:59:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:59:48,982 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:51,188 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2022-07-21 06:59:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:59:51,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:51,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:51,215 INFO L225 Difference]: With dead ends: 6668 [2022-07-21 06:59:51,216 INFO L226 Difference]: Without dead ends: 5348 [2022-07-21 06:59:51,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:59:51,225 INFO L413 NwaCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:51,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5088 Valid, 21964 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 06:59:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-07-21 06:59:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2022-07-21 06:59:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 06:59:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2022-07-21 06:59:51,434 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2022-07-21 06:59:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:51,435 INFO L495 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2022-07-21 06:59:51,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2022-07-21 06:59:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:51,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:51,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:51,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:59:51,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2022-07-21 06:59:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:51,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704788329] [2022-07-21 06:59:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:51,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:51,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704788329] [2022-07-21 06:59:51,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704788329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:51,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:51,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:59:51,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494313338] [2022-07-21 06:59:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:51,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:59:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:59:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:59:51,574 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:53,968 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2022-07-21 06:59:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:59:53,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:54,016 INFO L225 Difference]: With dead ends: 10422 [2022-07-21 06:59:54,017 INFO L226 Difference]: Without dead ends: 8067 [2022-07-21 06:59:54,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:59:54,034 INFO L413 NwaCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 21956 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:54,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5083 Valid, 21956 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 06:59:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2022-07-21 06:59:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2022-07-21 06:59:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-21 06:59:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2022-07-21 06:59:54,348 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2022-07-21 06:59:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:54,349 INFO L495 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2022-07-21 06:59:54,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2022-07-21 06:59:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:54,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:54,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:54,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:59:54,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2022-07-21 06:59:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:54,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301247313] [2022-07-21 06:59:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:54,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:54,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301247313] [2022-07-21 06:59:54,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301247313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:54,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:54,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:59:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454132590] [2022-07-21 06:59:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:59:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:59:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:59:54,500 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:57,001 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2022-07-21 06:59:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:59:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:57,070 INFO L225 Difference]: With dead ends: 17948 [2022-07-21 06:59:57,071 INFO L226 Difference]: Without dead ends: 13509 [2022-07-21 06:59:57,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:59:57,094 INFO L413 NwaCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21951 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:57,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 21951 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 06:59:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2022-07-21 06:59:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2022-07-21 06:59:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 06:59:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2022-07-21 06:59:57,682 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2022-07-21 06:59:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:59:57,682 INFO L495 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2022-07-21 06:59:57,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2022-07-21 06:59:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 06:59:57,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:59:57,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:59:57,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:59:57,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:59:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:59:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2022-07-21 06:59:57,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:59:57,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699718328] [2022-07-21 06:59:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:59:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:59:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:59:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:59:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:59:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:59:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:59:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:59:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:59:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:59:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699718328] [2022-07-21 06:59:57,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699718328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:59:57,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:59:57,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:59:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145056717] [2022-07-21 06:59:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:59:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:59:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:59:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:59:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:59:57,837 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:59:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:59:59,514 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2022-07-21 06:59:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:59:59,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 06:59:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:59:59,578 INFO L225 Difference]: With dead ends: 22268 [2022-07-21 06:59:59,578 INFO L226 Difference]: Without dead ends: 13648 [2022-07-21 06:59:59,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:59:59,621 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12434 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16844 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 06:59:59,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4901 Valid, 16844 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 06:59:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2022-07-21 07:00:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2022-07-21 07:00:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 07:00:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2022-07-21 07:00:00,276 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2022-07-21 07:00:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:00:00,277 INFO L495 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2022-07-21 07:00:00,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2022-07-21 07:00:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 07:00:00,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:00:00,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:00:00,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:00:00,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:00:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:00:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2022-07-21 07:00:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:00:00,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852433412] [2022-07-21 07:00:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:00:00,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:00:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:00:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:00:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:00:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:00:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:00:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:00:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:00:00,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852433412] [2022-07-21 07:00:00,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852433412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:00:00,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:00:00,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:00:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152329641] [2022-07-21 07:00:00,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:00:00,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:00:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:00:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:00:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:00:00,403 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:00:03,547 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2022-07-21 07:00:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 07:00:03,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 07:00:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:00:03,648 INFO L225 Difference]: With dead ends: 32965 [2022-07-21 07:00:03,649 INFO L226 Difference]: Without dead ends: 24345 [2022-07-21 07:00:03,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:00:03,704 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21940 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:00:03,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 21940 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 07:00:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2022-07-21 07:00:04,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2022-07-21 07:00:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-21 07:00:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2022-07-21 07:00:04,864 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2022-07-21 07:00:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:00:04,865 INFO L495 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2022-07-21 07:00:04,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2022-07-21 07:00:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 07:00:04,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:00:04,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:00:04,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:00:04,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:00:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:00:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2022-07-21 07:00:04,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:00:04,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746881084] [2022-07-21 07:00:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:00:04,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:00:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:00:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:00:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:00:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:00:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:00:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:00:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:00:04,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746881084] [2022-07-21 07:00:04,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746881084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:00:04,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:00:04,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:00:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322928255] [2022-07-21 07:00:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:00:04,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:00:04,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:00:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:00:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:00:04,987 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:00:10,318 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2022-07-21 07:00:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:00:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 07:00:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:00:10,557 INFO L225 Difference]: With dead ends: 70813 [2022-07-21 07:00:10,557 INFO L226 Difference]: Without dead ends: 53767 [2022-07-21 07:00:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:00:10,761 INFO L413 NwaCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21925 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:00:10,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 21925 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 07:00:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2022-07-21 07:00:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2022-07-21 07:00:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-07-21 07:00:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2022-07-21 07:00:12,885 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2022-07-21 07:00:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:00:12,886 INFO L495 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2022-07-21 07:00:12,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2022-07-21 07:00:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 07:00:12,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:00:12,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:00:12,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:00:12,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:00:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:00:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2022-07-21 07:00:12,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:00:12,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35848658] [2022-07-21 07:00:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:00:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:00:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:00:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:00:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:00:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:00:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:00:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:00:13,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:00:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35848658] [2022-07-21 07:00:13,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35848658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:00:13,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:00:13,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:00:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674653110] [2022-07-21 07:00:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:00:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:00:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:00:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:00:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:00:13,029 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:00:22,290 INFO L93 Difference]: Finished difference Result 136652 states and 221030 transitions. [2022-07-21 07:00:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:00:22,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 07:00:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:00:22,796 INFO L225 Difference]: With dead ends: 136652 [2022-07-21 07:00:22,796 INFO L226 Difference]: Without dead ends: 102885 [2022-07-21 07:00:22,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:00:22,942 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 5197 mSDsluCounter, 16805 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 21420 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:00:22,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 21420 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 07:00:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102885 states. [2022-07-21 07:00:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102885 to 68001. [2022-07-21 07:00:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 62081 states have (on average 1.5570625473172146) internal successors, (96664), 62340 states have internal predecessors, (96664), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-07-21 07:00:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 111719 transitions. [2022-07-21 07:00:28,031 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 111719 transitions. Word has length 135 [2022-07-21 07:00:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:00:28,032 INFO L495 AbstractCegarLoop]: Abstraction has 68001 states and 111719 transitions. [2022-07-21 07:00:28,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 111719 transitions. [2022-07-21 07:00:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 07:00:28,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:00:28,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:00:28,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:00:28,075 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:00:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:00:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2022-07-21 07:00:28,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:00:28,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014289363] [2022-07-21 07:00:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:00:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:00:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 07:00:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 07:00:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 07:00:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 07:00:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 07:00:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:00:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:00:28,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:00:28,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014289363] [2022-07-21 07:00:28,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014289363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:00:28,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:00:28,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:00:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805953299] [2022-07-21 07:00:28,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:00:28,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:00:28,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:00:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:00:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:00:28,183 INFO L87 Difference]: Start difference. First operand 68001 states and 111719 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 07:00:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:00:45,517 INFO L93 Difference]: Finished difference Result 262123 states and 431420 transitions. [2022-07-21 07:00:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:00:45,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 07:00:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:00:46,549 INFO L225 Difference]: With dead ends: 262123 [2022-07-21 07:00:46,549 INFO L226 Difference]: Without dead ends: 196259 [2022-07-21 07:00:46,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:00:46,723 INFO L413 NwaCegarLoop]: 4646 mSDtfsCounter, 5311 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 21913 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:00:46,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5335 Valid, 21913 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 07:00:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196259 states.