./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/systemc/token_ring.04.cil-1.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 d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:52:03,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:52:03,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:52:03,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:52:03,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:52:03,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:52:03,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:52:03,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:52:03,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:52:03,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:52:03,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:52:03,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:52:03,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:52:03,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:52:03,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:52:03,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:52:03,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:52:03,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:52:03,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:52:03,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:52:03,464 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:52:03,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:52:03,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:52:03,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:52:03,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:52:03,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:52:03,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:52:03,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:52:03,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:52:03,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:52:03,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:52:03,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:52:03,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:52:03,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:52:03,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:52:03,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:52:03,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:52:03,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:52:03,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:52:03,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:52:03,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:52:03,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:52:03,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:52:03,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:52:03,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:52:03,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:52:03,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:52:03,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:52:03,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:52:03,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:52:03,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:52:03,496 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:52:03,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:52:03,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:52:03,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:52:03,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:52:03,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:52:03,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:52:03,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:52:03,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:52:03,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:52:03,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:52:03,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:52:03,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:52:03,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:52:03,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:52:03,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:52:03,499 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:52:03,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:52:03,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:52:03,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba [2022-07-22 17:52:03,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:52:03,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:52:03,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:52:03,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:52:03,726 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:52:03,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2022-07-22 17:52:03,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02851c4c/9de49d720007480a86bf8350237364b3/FLAG03806d77d [2022-07-22 17:52:04,127 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:52:04,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2022-07-22 17:52:04,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02851c4c/9de49d720007480a86bf8350237364b3/FLAG03806d77d [2022-07-22 17:52:04,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02851c4c/9de49d720007480a86bf8350237364b3 [2022-07-22 17:52:04,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:52:04,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:52:04,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:52:04,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:52:04,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:52:04,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd9bd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04, skipping insertion in model container [2022-07-22 17:52:04,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:52:04,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:52:04,323 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/systemc/token_ring.04.cil-1.c[671,684] [2022-07-22 17:52:04,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:52:04,386 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:52:04,393 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/systemc/token_ring.04.cil-1.c[671,684] [2022-07-22 17:52:04,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:52:04,436 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:52:04,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04 WrapperNode [2022-07-22 17:52:04,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:52:04,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:52:04,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:52:04,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:52:04,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,470 INFO L137 Inliner]: procedures = 36, calls = 43, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 389 [2022-07-22 17:52:04,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:52:04,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:52:04,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:52:04,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:52:04,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:52:04,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:52:04,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:52:04,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:52:04,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (1/1) ... [2022-07-22 17:52:04,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:52:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:52:04,552 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) [2022-07-22 17:52:04,574 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 [2022-07-22 17:52:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:52:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:52:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:52:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:52:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:52:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:52:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:52:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:52:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:52:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:52:04,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:52:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:52:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:52:04,588 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:52:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:52:04,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:52:04,640 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:52:04,641 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:52:04,915 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:52:04,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:52:04,922 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-22 17:52:04,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:52:04 BoogieIcfgContainer [2022-07-22 17:52:04,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:52:04,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:52:04,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:52:04,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:52:04,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:52:04" (1/3) ... [2022-07-22 17:52:04,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a97ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:52:04, skipping insertion in model container [2022-07-22 17:52:04,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:04" (2/3) ... [2022-07-22 17:52:04,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a97ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:52:04, skipping insertion in model container [2022-07-22 17:52:04,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:52:04" (3/3) ... [2022-07-22 17:52:04,929 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-1.c [2022-07-22 17:52:04,938 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:52:04,939 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:52:04,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:52:04,978 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@bfa3fff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64f5b1c3 [2022-07-22 17:52:04,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:52:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 156 states have (on average 1.608974358974359) internal successors, (251), 158 states have internal predecessors, (251), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 17:52:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:05,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:05,001 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] [2022-07-22 17:52:05,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1049812288, now seen corresponding path program 1 times [2022-07-22 17:52:05,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:05,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976163601] [2022-07-22 17:52:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:05,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976163601] [2022-07-22 17:52:05,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976163601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:05,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:05,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:52:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484620031] [2022-07-22 17:52:05,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:05,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:52:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:52:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:52:05,281 INFO L87 Difference]: Start difference. First operand has 182 states, 156 states have (on average 1.608974358974359) internal successors, (251), 158 states have internal predecessors, (251), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:05,743 INFO L93 Difference]: Finished difference Result 407 states and 650 transitions. [2022-07-22 17:52:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:52:05,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:05,753 INFO L225 Difference]: With dead ends: 407 [2022-07-22 17:52:05,753 INFO L226 Difference]: Without dead ends: 231 [2022-07-22 17:52:05,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:52:05,759 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 430 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:05,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 481 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:52:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-22 17:52:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 177. [2022-07-22 17:52:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 152 states have (on average 1.513157894736842) internal successors, (230), 153 states have internal predecessors, (230), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 17:52:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 266 transitions. [2022-07-22 17:52:05,797 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 266 transitions. Word has length 89 [2022-07-22 17:52:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:05,798 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 266 transitions. [2022-07-22 17:52:05,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 266 transitions. [2022-07-22 17:52:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:05,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:05,801 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] [2022-07-22 17:52:05,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:52:05,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1888845950, now seen corresponding path program 1 times [2022-07-22 17:52:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:05,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647482689] [2022-07-22 17:52:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:05,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647482689] [2022-07-22 17:52:05,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647482689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:05,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:05,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:52:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094971933] [2022-07-22 17:52:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:52:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:52:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:52:05,923 INFO L87 Difference]: Start difference. First operand 177 states and 266 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:06,730 INFO L93 Difference]: Finished difference Result 617 states and 953 transitions. [2022-07-22 17:52:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:52:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:06,734 INFO L225 Difference]: With dead ends: 617 [2022-07-22 17:52:06,735 INFO L226 Difference]: Without dead ends: 452 [2022-07-22 17:52:06,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:52:06,737 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 633 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:06,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 748 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:52:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-07-22 17:52:06,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 345. [2022-07-22 17:52:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 300 states have (on average 1.5266666666666666) internal successors, (458), 302 states have internal predecessors, (458), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-07-22 17:52:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2022-07-22 17:52:06,770 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 89 [2022-07-22 17:52:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:06,770 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2022-07-22 17:52:06,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2022-07-22 17:52:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:06,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:06,773 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] [2022-07-22 17:52:06,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:52:06,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1231461894, now seen corresponding path program 1 times [2022-07-22 17:52:06,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:06,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508860176] [2022-07-22 17:52:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:06,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:06,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:06,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:06,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508860176] [2022-07-22 17:52:06,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508860176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:06,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:06,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:06,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736627619] [2022-07-22 17:52:06,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:06,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:06,874 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:07,797 INFO L93 Difference]: Finished difference Result 1010 states and 1555 transitions. [2022-07-22 17:52:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:07,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:07,800 INFO L225 Difference]: With dead ends: 1010 [2022-07-22 17:52:07,815 INFO L226 Difference]: Without dead ends: 677 [2022-07-22 17:52:07,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:07,818 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 631 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:07,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1279 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:52:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-07-22 17:52:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 502. [2022-07-22 17:52:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 437 states have (on average 1.5194508009153318) internal successors, (664), 440 states have internal predecessors, (664), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 17:52:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 757 transitions. [2022-07-22 17:52:07,858 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 757 transitions. Word has length 89 [2022-07-22 17:52:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:07,859 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 757 transitions. [2022-07-22 17:52:07,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 757 transitions. [2022-07-22 17:52:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:07,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:07,861 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] [2022-07-22 17:52:07,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:52:07,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2118684740, now seen corresponding path program 1 times [2022-07-22 17:52:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:07,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357642200] [2022-07-22 17:52:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:07,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:07,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357642200] [2022-07-22 17:52:07,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357642200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:07,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:07,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265147702] [2022-07-22 17:52:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:07,946 INFO L87 Difference]: Start difference. First operand 502 states and 757 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:08,769 INFO L93 Difference]: Finished difference Result 1588 states and 2437 transitions. [2022-07-22 17:52:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:08,776 INFO L225 Difference]: With dead ends: 1588 [2022-07-22 17:52:08,776 INFO L226 Difference]: Without dead ends: 1098 [2022-07-22 17:52:08,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:08,783 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 676 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:08,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 898 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:52:08,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-07-22 17:52:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 817. [2022-07-22 17:52:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 712 states have (on average 1.5126404494382022) internal successors, (1077), 717 states have internal predecessors, (1077), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-07-22 17:52:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1230 transitions. [2022-07-22 17:52:08,869 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1230 transitions. Word has length 89 [2022-07-22 17:52:08,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:08,870 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1230 transitions. [2022-07-22 17:52:08,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1230 transitions. [2022-07-22 17:52:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:08,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:08,879 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] [2022-07-22 17:52:08,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:52:08,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash 207642182, now seen corresponding path program 1 times [2022-07-22 17:52:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:08,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318964654] [2022-07-22 17:52:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:09,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:09,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318964654] [2022-07-22 17:52:09,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318964654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:09,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:09,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:09,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896526453] [2022-07-22 17:52:09,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:09,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:09,004 INFO L87 Difference]: Start difference. First operand 817 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:10,096 INFO L93 Difference]: Finished difference Result 2703 states and 4134 transitions. [2022-07-22 17:52:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:10,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:10,104 INFO L225 Difference]: With dead ends: 2703 [2022-07-22 17:52:10,104 INFO L226 Difference]: Without dead ends: 1898 [2022-07-22 17:52:10,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:10,107 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 623 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:10,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1269 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:52:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2022-07-22 17:52:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1448. [2022-07-22 17:52:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1263 states have (on average 1.5067300079176564) internal successors, (1903), 1272 states have internal predecessors, (1903), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-07-22 17:52:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2182 transitions. [2022-07-22 17:52:10,163 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2182 transitions. Word has length 89 [2022-07-22 17:52:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:10,164 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2182 transitions. [2022-07-22 17:52:10,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2182 transitions. [2022-07-22 17:52:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:10,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:10,166 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] [2022-07-22 17:52:10,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:52:10,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 284542980, now seen corresponding path program 1 times [2022-07-22 17:52:10,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:10,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052754828] [2022-07-22 17:52:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:10,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:10,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052754828] [2022-07-22 17:52:10,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052754828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:10,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:10,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:10,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968521792] [2022-07-22 17:52:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:10,233 INFO L87 Difference]: Start difference. First operand 1448 states and 2182 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:11,261 INFO L93 Difference]: Finished difference Result 4932 states and 7544 transitions. [2022-07-22 17:52:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:11,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:11,276 INFO L225 Difference]: With dead ends: 4932 [2022-07-22 17:52:11,276 INFO L226 Difference]: Without dead ends: 3496 [2022-07-22 17:52:11,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:11,281 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 619 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:11,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1265 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:52:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-07-22 17:52:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2715. [2022-07-22 17:52:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2370 states have (on average 1.5025316455696203) internal successors, (3561), 2387 states have internal predecessors, (3561), 226 states have call successors, (226), 102 states have call predecessors, (226), 118 states have return successors, (323), 241 states have call predecessors, (323), 226 states have call successors, (323) [2022-07-22 17:52:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4110 transitions. [2022-07-22 17:52:11,410 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4110 transitions. Word has length 89 [2022-07-22 17:52:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:11,410 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4110 transitions. [2022-07-22 17:52:11,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4110 transitions. [2022-07-22 17:52:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:11,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:11,413 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] [2022-07-22 17:52:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:52:11,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash -682807674, now seen corresponding path program 1 times [2022-07-22 17:52:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:11,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583101362] [2022-07-22 17:52:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:11,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:11,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583101362] [2022-07-22 17:52:11,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583101362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:11,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:11,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:11,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272118127] [2022-07-22 17:52:11,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:11,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:11,483 INFO L87 Difference]: Start difference. First operand 2715 states and 4110 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:12,622 INFO L93 Difference]: Finished difference Result 10429 states and 15960 transitions. [2022-07-22 17:52:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:52:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:12,652 INFO L225 Difference]: With dead ends: 10429 [2022-07-22 17:52:12,653 INFO L226 Difference]: Without dead ends: 7726 [2022-07-22 17:52:12,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:52:12,662 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 789 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:12,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1251 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:52:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2022-07-22 17:52:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 5214. [2022-07-22 17:52:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 4565 states have (on average 1.503395399780942) internal successors, (6863), 4598 states have internal predecessors, (6863), 418 states have call successors, (418), 198 states have call predecessors, (418), 230 states have return successors, (693), 449 states have call predecessors, (693), 418 states have call successors, (693) [2022-07-22 17:52:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7974 transitions. [2022-07-22 17:52:12,924 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7974 transitions. Word has length 89 [2022-07-22 17:52:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:12,925 INFO L495 AbstractCegarLoop]: Abstraction has 5214 states and 7974 transitions. [2022-07-22 17:52:12,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7974 transitions. [2022-07-22 17:52:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:12,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:12,930 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] [2022-07-22 17:52:12,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:52:12,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1225650116, now seen corresponding path program 1 times [2022-07-22 17:52:12,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:12,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446831890] [2022-07-22 17:52:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:13,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446831890] [2022-07-22 17:52:13,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446831890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:13,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:13,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567451184] [2022-07-22 17:52:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:13,002 INFO L87 Difference]: Start difference. First operand 5214 states and 7974 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:14,641 INFO L93 Difference]: Finished difference Result 19854 states and 30642 transitions. [2022-07-22 17:52:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:52:14,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:14,706 INFO L225 Difference]: With dead ends: 19854 [2022-07-22 17:52:14,706 INFO L226 Difference]: Without dead ends: 14652 [2022-07-22 17:52:14,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:52:14,725 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 646 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:14,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1301 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:52:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2022-07-22 17:52:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 10033. [2022-07-22 17:52:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10033 states, 8792 states have (on average 1.5037534121929026) internal successors, (13221), 8857 states have internal predecessors, (13221), 786 states have call successors, (786), 390 states have call predecessors, (786), 454 states have return successors, (1579), 849 states have call predecessors, (1579), 786 states have call successors, (1579) [2022-07-22 17:52:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 15586 transitions. [2022-07-22 17:52:15,357 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 15586 transitions. Word has length 89 [2022-07-22 17:52:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:15,358 INFO L495 AbstractCegarLoop]: Abstraction has 10033 states and 15586 transitions. [2022-07-22 17:52:15,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 15586 transitions. [2022-07-22 17:52:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:15,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:15,366 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] [2022-07-22 17:52:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:52:15,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash 733023942, now seen corresponding path program 1 times [2022-07-22 17:52:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039435004] [2022-07-22 17:52:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:15,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:15,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039435004] [2022-07-22 17:52:15,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039435004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:15,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:15,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030202927] [2022-07-22 17:52:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:15,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:15,459 INFO L87 Difference]: Start difference. First operand 10033 states and 15586 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:17,313 INFO L93 Difference]: Finished difference Result 36672 states and 57504 transitions. [2022-07-22 17:52:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:52:17,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:17,397 INFO L225 Difference]: With dead ends: 36672 [2022-07-22 17:52:17,398 INFO L226 Difference]: Without dead ends: 26651 [2022-07-22 17:52:17,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:52:17,438 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 666 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:17,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1237 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:52:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26651 states. [2022-07-22 17:52:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26651 to 19861. [2022-07-22 17:52:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19861 states, 17468 states have (on average 1.50841538813831) internal successors, (26349), 17597 states have internal predecessors, (26349), 1490 states have call successors, (1490), 774 states have call predecessors, (1490), 902 states have return successors, (3805), 1617 states have call predecessors, (3805), 1490 states have call successors, (3805) [2022-07-22 17:52:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19861 states to 19861 states and 31644 transitions. [2022-07-22 17:52:18,435 INFO L78 Accepts]: Start accepts. Automaton has 19861 states and 31644 transitions. Word has length 89 [2022-07-22 17:52:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:18,435 INFO L495 AbstractCegarLoop]: Abstraction has 19861 states and 31644 transitions. [2022-07-22 17:52:18,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 19861 states and 31644 transitions. [2022-07-22 17:52:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:18,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:18,450 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] [2022-07-22 17:52:18,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:52:18,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash -483129784, now seen corresponding path program 1 times [2022-07-22 17:52:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:18,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400020362] [2022-07-22 17:52:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:18,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:18,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:18,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400020362] [2022-07-22 17:52:18,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400020362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:18,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:18,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:18,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105496439] [2022-07-22 17:52:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:18,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:18,538 INFO L87 Difference]: Start difference. First operand 19861 states and 31644 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:21,356 INFO L93 Difference]: Finished difference Result 70566 states and 113524 transitions. [2022-07-22 17:52:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:52:21,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:21,556 INFO L225 Difference]: With dead ends: 70566 [2022-07-22 17:52:21,557 INFO L226 Difference]: Without dead ends: 50717 [2022-07-22 17:52:21,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:52:21,617 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 611 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:21,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1245 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:52:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2022-07-22 17:52:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 39450. [2022-07-22 17:52:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39450 states, 34817 states have (on average 1.512565700663469) internal successors, (52663), 35074 states have internal predecessors, (52663), 2834 states have call successors, (2834), 1542 states have call predecessors, (2834), 1798 states have return successors, (9651), 3089 states have call predecessors, (9651), 2834 states have call successors, (9651) [2022-07-22 17:52:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39450 states to 39450 states and 65148 transitions. [2022-07-22 17:52:23,525 INFO L78 Accepts]: Start accepts. Automaton has 39450 states and 65148 transitions. Word has length 89 [2022-07-22 17:52:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:23,525 INFO L495 AbstractCegarLoop]: Abstraction has 39450 states and 65148 transitions. [2022-07-22 17:52:23,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 39450 states and 65148 transitions. [2022-07-22 17:52:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:52:23,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:23,556 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] [2022-07-22 17:52:23,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:52:23,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:23,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1215097210, now seen corresponding path program 1 times [2022-07-22 17:52:23,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556696775] [2022-07-22 17:52:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:23,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556696775] [2022-07-22 17:52:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556696775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:23,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:23,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:52:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074139029] [2022-07-22 17:52:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:23,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:52:23,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:52:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:52:23,635 INFO L87 Difference]: Start difference. First operand 39450 states and 65148 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:27,706 INFO L93 Difference]: Finished difference Result 112207 states and 182741 transitions. [2022-07-22 17:52:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:52:27,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-07-22 17:52:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:27,978 INFO L225 Difference]: With dead ends: 112207 [2022-07-22 17:52:27,979 INFO L226 Difference]: Without dead ends: 72770 [2022-07-22 17:52:28,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:52:28,085 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 817 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:28,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1055 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:52:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72770 states. [2022-07-22 17:52:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72770 to 58973. [2022-07-22 17:52:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58973 states, 51952 states have (on average 1.500769941484447) internal successors, (77968), 52466 states have internal predecessors, (77968), 4320 states have call successors, (4320), 2316 states have call predecessors, (4320), 2700 states have return successors, (13325), 4446 states have call predecessors, (13325), 4320 states have call successors, (13325) [2022-07-22 17:52:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58973 states to 58973 states and 95613 transitions. [2022-07-22 17:52:31,285 INFO L78 Accepts]: Start accepts. Automaton has 58973 states and 95613 transitions. Word has length 89 [2022-07-22 17:52:31,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:31,286 INFO L495 AbstractCegarLoop]: Abstraction has 58973 states and 95613 transitions. [2022-07-22 17:52:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 58973 states and 95613 transitions. [2022-07-22 17:52:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:52:31,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:31,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:31,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:52:31,433 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 703245456, now seen corresponding path program 1 times [2022-07-22 17:52:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:31,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183127621] [2022-07-22 17:52:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:52:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 17:52:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 17:52:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:52:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:31,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183127621] [2022-07-22 17:52:31,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183127621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:52:31,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566638019] [2022-07-22 17:52:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:31,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:52:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:52:31,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:52:31,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:52:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:31,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:52:31,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:52:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:52:31,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:52:31,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566638019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:31,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:52:31,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 17:52:31,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415391402] [2022-07-22 17:52:31,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:31,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:52:31,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:52:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:52:31,739 INFO L87 Difference]: Start difference. First operand 58973 states and 95613 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:52:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:36,669 INFO L93 Difference]: Finished difference Result 175538 states and 286415 transitions. [2022-07-22 17:52:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:52:36,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 145 [2022-07-22 17:52:36,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:37,115 INFO L225 Difference]: With dead ends: 175538 [2022-07-22 17:52:37,116 INFO L226 Difference]: Without dead ends: 116578 [2022-07-22 17:52:37,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:52:37,267 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 216 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:37,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 512 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:52:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116578 states. [2022-07-22 17:52:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116578 to 115804. [2022-07-22 17:52:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115804 states, 101961 states have (on average 1.4989162522925432) internal successors, (152831), 102988 states have internal predecessors, (152831), 8442 states have call successors, (8442), 4632 states have call predecessors, (8442), 5400 states have return successors, (26197), 8439 states have call predecessors, (26197), 8442 states have call successors, (26197) [2022-07-22 17:52:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115804 states to 115804 states and 187470 transitions. [2022-07-22 17:52:43,148 INFO L78 Accepts]: Start accepts. Automaton has 115804 states and 187470 transitions. Word has length 145 [2022-07-22 17:52:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:43,148 INFO L495 AbstractCegarLoop]: Abstraction has 115804 states and 187470 transitions. [2022-07-22 17:52:43,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:52:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 115804 states and 187470 transitions. [2022-07-22 17:52:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:52:43,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:43,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:43,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:52:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 17:52:43,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1164809040, now seen corresponding path program 1 times [2022-07-22 17:52:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459081903] [2022-07-22 17:52:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:52:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:52:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:52:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:52:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:52:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 17:52:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 17:52:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:52:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:43,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459081903] [2022-07-22 17:52:43,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459081903] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:52:43,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981240963] [2022-07-22 17:52:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:43,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:52:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:52:43,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:52:43,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:52:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:43,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:52:43,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:52:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:52:43,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:52:43,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981240963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:43,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:52:43,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 17:52:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717276243] [2022-07-22 17:52:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:52:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:52:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:52:43,848 INFO L87 Difference]: Start difference. First operand 115804 states and 187470 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:52:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:53,016 INFO L93 Difference]: Finished difference Result 344677 states and 561664 transitions. [2022-07-22 17:52:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:52:53,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 145 [2022-07-22 17:52:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:54,222 INFO L225 Difference]: With dead ends: 344677 [2022-07-22 17:52:54,222 INFO L226 Difference]: Without dead ends: 228886 [2022-07-22 17:52:54,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:52:54,726 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 210 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:54,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 512 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:52:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228886 states.