./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:08:11,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:08:11,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:08:11,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:08:11,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:08:11,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:08:11,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:08:11,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:08:11,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:08:11,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:08:11,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:08:11,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:08:11,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:08:11,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:08:11,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:08:11,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:08:11,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:08:11,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:08:11,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:08:11,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:08:11,484 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:08:11,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:08:11,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:08:11,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:08:11,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:08:11,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:08:11,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:08:11,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:08:11,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:08:11,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:08:11,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:08:11,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:08:11,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:08:11,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:08:11,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:08:11,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:08:11,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:08:11,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:08:11,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:08:11,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:08:11,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:08:11,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:08:11,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:08:11,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:08:11,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:08:11,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:08:11,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:08:11,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:08:11,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:08:11,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:08:11,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:08:11,531 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:08:11,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:08:11,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:08:11,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:08:11,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:08:11,535 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:08:11,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:08:11,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:08:11,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:08:11,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:08:11,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:08:11,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:08:11,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:08:11,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:08:11,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:08:11,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:08:11,536 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:08:11,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:08:11,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:08:11,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 [2022-07-13 20:08:11,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:08:11,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:08:11,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:08:11,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:08:11,812 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:08:11,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2022-07-13 20:08:11,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c392acadc/e1eb5ab23835402993188bb02302207b/FLAG873c91f5b [2022-07-13 20:08:12,543 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:08:12,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2022-07-13 20:08:12,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c392acadc/e1eb5ab23835402993188bb02302207b/FLAG873c91f5b [2022-07-13 20:08:12,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c392acadc/e1eb5ab23835402993188bb02302207b [2022-07-13 20:08:12,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:08:12,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:08:12,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:08:12,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:08:12,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:08:12,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:08:12" (1/1) ... [2022-07-13 20:08:12,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5360643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:12, skipping insertion in model container [2022-07-13 20:08:12,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:08:12" (1/1) ... [2022-07-13 20:08:12,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:08:13,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:08:14,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2022-07-13 20:08:14,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2022-07-13 20:08:14,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:08:14,502 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:08:15,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2022-07-13 20:08:15,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2022-07-13 20:08:15,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:08:15,125 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:08:15,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15 WrapperNode [2022-07-13 20:08:15,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:08:15,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:08:15,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:08:15,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:08:15,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,494 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-07-13 20:08:15,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:08:15,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:08:15,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:08:15,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:08:15,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:08:15,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:08:15,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:08:15,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:08:15,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (1/1) ... [2022-07-13 20:08:15,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:08:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:08:15,922 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) [2022-07-13 20:08:15,945 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 [2022-07-13 20:08:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:08:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:08:15,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:08:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:08:15,972 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:08:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:08:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:08:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 20:08:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 20:08:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:08:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:08:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:08:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:08:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:08:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:08:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:08:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:08:15,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:08:16,082 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:08:16,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:08:20,718 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:08:20,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:08:20,742 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-13 20:08:20,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:08:20 BoogieIcfgContainer [2022-07-13 20:08:20,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:08:20,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:08:20,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:08:20,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:08:20,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:08:12" (1/3) ... [2022-07-13 20:08:20,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6231424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:08:20, skipping insertion in model container [2022-07-13 20:08:20,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:15" (2/3) ... [2022-07-13 20:08:20,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6231424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:08:20, skipping insertion in model container [2022-07-13 20:08:20,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:08:20" (3/3) ... [2022-07-13 20:08:20,751 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-2.c [2022-07-13 20:08:20,761 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:08:20,761 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:08:20,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:08:20,831 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@474f876a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40d33a98 [2022-07-13 20:08:20,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:08:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-13 20:08:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:20,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:20,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:20,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-07-13 20:08:20,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:20,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782957095] [2022-07-13 20:08:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:20,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782957095] [2022-07-13 20:08:21,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782957095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:21,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:21,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:08:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994858312] [2022-07-13 20:08:21,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:21,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:08:21,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:08:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:08:21,147 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:21,921 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-07-13 20:08:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:08:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:21,940 INFO L225 Difference]: With dead ends: 4852 [2022-07-13 20:08:21,940 INFO L226 Difference]: Without dead ends: 2395 [2022-07-13 20:08:21,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:08:21,949 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:21,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 16674 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:08:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-13 20:08:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-07-13 20:08:22,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 20:08:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-07-13 20:08:22,034 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-07-13 20:08:22,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:22,034 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-07-13 20:08:22,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-07-13 20:08:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:22,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:22,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:22,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:08:22,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-07-13 20:08:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:22,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159803853] [2022-07-13 20:08:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:22,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159803853] [2022-07-13 20:08:22,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159803853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:22,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:22,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:08:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891751180] [2022-07-13 20:08:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:22,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:08:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:08:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:08:22,194 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:23,177 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-07-13 20:08:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:08:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:23,188 INFO L225 Difference]: With dead ends: 2856 [2022-07-13 20:08:23,188 INFO L226 Difference]: Without dead ends: 2660 [2022-07-13 20:08:23,190 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 [2022-07-13 20:08:23,191 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16743 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4733 Valid, 16743 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:08:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-07-13 20:08:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-07-13 20:08:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-13 20:08:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-07-13 20:08:23,249 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-07-13 20:08:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:23,249 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-07-13 20:08:23,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-07-13 20:08:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:23,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:23,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:23,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:08:23,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-07-13 20:08:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590431545] [2022-07-13 20:08:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:23,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:23,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:23,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590431545] [2022-07-13 20:08:23,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590431545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:23,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:23,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578012338] [2022-07-13 20:08:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:23,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:23,408 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:24,793 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-07-13 20:08:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:24,804 INFO L225 Difference]: With dead ends: 3324 [2022-07-13 20:08:24,804 INFO L226 Difference]: Without dead ends: 2929 [2022-07-13 20:08:24,807 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 [2022-07-13 20:08:24,808 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 4725 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:24,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 21376 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:08:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-07-13 20:08:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-07-13 20:08:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-13 20:08:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-07-13 20:08:24,877 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-07-13 20:08:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:24,878 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-07-13 20:08:24,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-07-13 20:08:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:24,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:24,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:24,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:08:24,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-07-13 20:08:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:24,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095370531] [2022-07-13 20:08:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:24,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:24,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:24,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095370531] [2022-07-13 20:08:24,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095370531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:24,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:24,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832933313] [2022-07-13 20:08:24,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:24,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:24,967 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:26,353 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-07-13 20:08:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:26,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:26,367 INFO L225 Difference]: With dead ends: 4012 [2022-07-13 20:08:26,370 INFO L226 Difference]: Without dead ends: 3431 [2022-07-13 20:08:26,373 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 [2022-07-13 20:08:26,379 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 4719 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 21364 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:26,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 21364 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:08:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-07-13 20:08:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-07-13 20:08:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-13 20:08:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-07-13 20:08:26,473 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-07-13 20:08:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:26,473 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-07-13 20:08:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-07-13 20:08:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:26,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:26,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:08:26,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-07-13 20:08:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:26,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988994702] [2022-07-13 20:08:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:26,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:26,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988994702] [2022-07-13 20:08:26,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988994702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:26,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:26,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800525796] [2022-07-13 20:08:26,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:26,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:26,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:26,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:26,581 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:27,921 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-07-13 20:08:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:27,937 INFO L225 Difference]: With dead ends: 5346 [2022-07-13 20:08:27,937 INFO L226 Difference]: Without dead ends: 4389 [2022-07-13 20:08:27,941 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 [2022-07-13 20:08:27,942 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 4718 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 21359 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:08:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-07-13 20:08:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-07-13 20:08:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-13 20:08:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-07-13 20:08:28,086 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-07-13 20:08:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:28,086 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-07-13 20:08:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-07-13 20:08:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:28,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:28,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:28,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:08:28,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:28,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-07-13 20:08:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:28,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591579864] [2022-07-13 20:08:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:28,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:28,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591579864] [2022-07-13 20:08:28,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591579864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:28,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:28,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:28,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885841399] [2022-07-13 20:08:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:28,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:28,158 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:29,433 INFO L93 Difference]: Finished difference Result 8013 states and 13133 transitions. [2022-07-13 20:08:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:29,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:29,455 INFO L225 Difference]: With dead ends: 8013 [2022-07-13 20:08:29,455 INFO L226 Difference]: Without dead ends: 6303 [2022-07-13 20:08:29,463 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 [2022-07-13 20:08:29,463 INFO L413 NwaCegarLoop]: 4463 mSDtfsCounter, 4717 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:29,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 21354 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:08:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-07-13 20:08:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5357. [2022-07-13 20:08:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 4992 states have (on average 1.6766826923076923) internal successors, (8370), 5011 states have internal predecessors, (8370), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-13 20:08:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8955 transitions. [2022-07-13 20:08:29,618 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8955 transitions. Word has length 102 [2022-07-13 20:08:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:29,618 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 8955 transitions. [2022-07-13 20:08:29,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8955 transitions. [2022-07-13 20:08:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:29,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:29,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:08:29,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2022-07-13 20:08:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:29,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432498497] [2022-07-13 20:08:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:29,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:29,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432498497] [2022-07-13 20:08:29,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432498497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:29,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:29,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616100294] [2022-07-13 20:08:29,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:29,703 INFO L87 Difference]: Start difference. First operand 5357 states and 8955 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:31,179 INFO L93 Difference]: Finished difference Result 14612 states and 23393 transitions. [2022-07-13 20:08:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:31,212 INFO L225 Difference]: With dead ends: 14612 [2022-07-13 20:08:31,217 INFO L226 Difference]: Without dead ends: 11389 [2022-07-13 20:08:31,228 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 [2022-07-13 20:08:31,229 INFO L413 NwaCegarLoop]: 4331 mSDtfsCounter, 4979 mSDsluCounter, 16535 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 20866 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:31,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 20866 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:08:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11389 states. [2022-07-13 20:08:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 8350. [2022-07-13 20:08:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 7665 states have (on average 1.6287018917155904) internal successors, (12484), 7700 states have internal predecessors, (12484), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-13 20:08:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 13663 transitions. [2022-07-13 20:08:31,540 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 13663 transitions. Word has length 102 [2022-07-13 20:08:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:31,541 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 13663 transitions. [2022-07-13 20:08:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 13663 transitions. [2022-07-13 20:08:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:31,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:31,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:08:31,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:31,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2022-07-13 20:08:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:31,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085343685] [2022-07-13 20:08:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:31,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085343685] [2022-07-13 20:08:31,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085343685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:31,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:31,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67884744] [2022-07-13 20:08:31,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:31,625 INFO L87 Difference]: Start difference. First operand 8350 states and 13663 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:33,547 INFO L93 Difference]: Finished difference Result 26019 states and 41415 transitions. [2022-07-13 20:08:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:33,600 INFO L225 Difference]: With dead ends: 26019 [2022-07-13 20:08:33,601 INFO L226 Difference]: Without dead ends: 19803 [2022-07-13 20:08:33,621 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 [2022-07-13 20:08:33,622 INFO L413 NwaCegarLoop]: 4526 mSDtfsCounter, 4757 mSDsluCounter, 16880 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:33,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21406 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:08:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2022-07-13 20:08:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 13999. [2022-07-13 20:08:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13999 states, 12690 states have (on average 1.5878644602048857) internal successors, (20150), 12757 states have internal predecessors, (20150), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-13 20:08:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 22647 transitions. [2022-07-13 20:08:34,283 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 22647 transitions. Word has length 102 [2022-07-13 20:08:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:34,284 INFO L495 AbstractCegarLoop]: Abstraction has 13999 states and 22647 transitions. [2022-07-13 20:08:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 22647 transitions. [2022-07-13 20:08:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:34,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:34,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:34,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:08:34,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2022-07-13 20:08:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:34,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578353645] [2022-07-13 20:08:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:34,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578353645] [2022-07-13 20:08:34,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578353645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:34,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:34,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:34,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036228356] [2022-07-13 20:08:34,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:34,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:34,405 INFO L87 Difference]: Start difference. First operand 13999 states and 22647 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:37,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:37,060 INFO L93 Difference]: Finished difference Result 47282 states and 75405 transitions. [2022-07-13 20:08:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:37,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:37,163 INFO L225 Difference]: With dead ends: 47282 [2022-07-13 20:08:37,163 INFO L226 Difference]: Without dead ends: 35417 [2022-07-13 20:08:37,205 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 [2022-07-13 20:08:37,207 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4849 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:37,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4867 Valid, 21329 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:08:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35417 states. [2022-07-13 20:08:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35417 to 25584. [2022-07-13 20:08:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25584 states, 23059 states have (on average 1.5650288390650071) internal successors, (36088), 23190 states have internal predecessors, (36088), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-13 20:08:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25584 states to 25584 states and 41643 transitions. [2022-07-13 20:08:38,399 INFO L78 Accepts]: Start accepts. Automaton has 25584 states and 41643 transitions. Word has length 102 [2022-07-13 20:08:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:38,399 INFO L495 AbstractCegarLoop]: Abstraction has 25584 states and 41643 transitions. [2022-07-13 20:08:38,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 25584 states and 41643 transitions. [2022-07-13 20:08:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:38,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:38,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:38,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:08:38,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2022-07-13 20:08:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:38,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673562977] [2022-07-13 20:08:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:38,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:38,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673562977] [2022-07-13 20:08:38,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673562977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:38,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:38,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:38,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218997752] [2022-07-13 20:08:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:38,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:38,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:38,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:38,479 INFO L87 Difference]: Start difference. First operand 25584 states and 41643 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:42,855 INFO L93 Difference]: Finished difference Result 89521 states and 145107 transitions. [2022-07-13 20:08:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:42,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:43,110 INFO L225 Difference]: With dead ends: 89521 [2022-07-13 20:08:43,110 INFO L226 Difference]: Without dead ends: 66071 [2022-07-13 20:08:43,163 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 [2022-07-13 20:08:43,165 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4812 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 21322 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:43,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 21322 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:08:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66071 states. [2022-07-13 20:08:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66071 to 48689. [2022-07-13 20:08:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.553246871860444) internal successors, (68026), 44055 states have internal predecessors, (68026), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-13 20:08:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 81027 transitions. [2022-07-13 20:08:45,738 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 81027 transitions. Word has length 102 [2022-07-13 20:08:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:45,739 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 81027 transitions. [2022-07-13 20:08:45,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 81027 transitions. [2022-07-13 20:08:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:45,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:45,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:45,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:08:45,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2022-07-13 20:08:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992949049] [2022-07-13 20:08:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:45,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992949049] [2022-07-13 20:08:45,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992949049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:45,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:45,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558924391] [2022-07-13 20:08:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:45,881 INFO L87 Difference]: Start difference. First operand 48689 states and 81027 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:49,326 INFO L93 Difference]: Finished difference Result 107098 states and 182436 transitions. [2022-07-13 20:08:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:08:49,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:49,611 INFO L225 Difference]: With dead ends: 107098 [2022-07-13 20:08:49,611 INFO L226 Difference]: Without dead ends: 60543 [2022-07-13 20:08:49,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:08:49,685 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4522 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:49,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 20603 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:08:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60543 states. [2022-07-13 20:08:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60543 to 48689. [2022-07-13 20:08:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.5473787560507808) internal successors, (67769), 44055 states have internal predecessors, (67769), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-13 20:08:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 80770 transitions. [2022-07-13 20:08:52,495 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 80770 transitions. Word has length 102 [2022-07-13 20:08:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:52,495 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 80770 transitions. [2022-07-13 20:08:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 80770 transitions. [2022-07-13 20:08:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 20:08:52,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:52,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:08:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:08:52,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2022-07-13 20:08:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:52,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111299720] [2022-07-13 20:08:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:08:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:08:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:08:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:52,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:52,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111299720] [2022-07-13 20:08:52,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111299720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:52,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:52,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:08:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073401869] [2022-07-13 20:08:52,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:52,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:08:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:08:52,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:08:52,596 INFO L87 Difference]: Start difference. First operand 48689 states and 80770 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:08:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:58,414 INFO L93 Difference]: Finished difference Result 135211 states and 220744 transitions. [2022-07-13 20:08:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:08:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-13 20:08:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:58,669 INFO L225 Difference]: With dead ends: 135211 [2022-07-13 20:08:58,669 INFO L226 Difference]: Without dead ends: 88657 [2022-07-13 20:08:58,763 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 [2022-07-13 20:08:58,763 INFO L413 NwaCegarLoop]: 4572 mSDtfsCounter, 4929 mSDsluCounter, 12525 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 17097 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:58,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 17097 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:08:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88657 states. [2022-07-13 20:09:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88657 to 71452. [2022-07-13 20:09:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71452 states, 64042 states have (on average 1.5303394647262734) internal successors, (98006), 64558 states have internal predecessors, (98006), 4708 states have call successors, (4708), 2317 states have call predecessors, (4708), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-13 20:09:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71452 states to 71452 states and 116425 transitions. [2022-07-13 20:09:02,667 INFO L78 Accepts]: Start accepts. Automaton has 71452 states and 116425 transitions. Word has length 102 [2022-07-13 20:09:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:02,667 INFO L495 AbstractCegarLoop]: Abstraction has 71452 states and 116425 transitions. [2022-07-13 20:09:02,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:09:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 71452 states and 116425 transitions. [2022-07-13 20:09:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 20:09:02,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:02,838 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:09:02,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1880616710, now seen corresponding path program 1 times [2022-07-13 20:09:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:02,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437903156] [2022-07-13 20:09:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:09:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:09:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:09:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:09:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 20:09:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:09:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 20:09:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:09:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:02,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437903156] [2022-07-13 20:09:02,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437903156] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:09:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131378978] [2022-07-13 20:09:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:02,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:09:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:09:02,965 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) [2022-07-13 20:09:02,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:09:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:09:03,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:09:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 20:09:03,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:09:03,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131378978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:03,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:09:03,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:09:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864348997] [2022-07-13 20:09:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:09:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:09:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:09:03,195 INFO L87 Difference]: Start difference. First operand 71452 states and 116425 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:09:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:09,471 INFO L93 Difference]: Finished difference Result 208731 states and 341317 transitions. [2022-07-13 20:09:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:09:09,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2022-07-13 20:09:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:10,161 INFO L225 Difference]: With dead ends: 208731 [2022-07-13 20:09:10,162 INFO L226 Difference]: Without dead ends: 139414 [2022-07-13 20:09:10,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:09:10,295 INFO L413 NwaCegarLoop]: 4286 mSDtfsCounter, 4204 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4573 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 [2022-07-13 20:09:10,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 4573 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:09:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139414 states. [2022-07-13 20:09:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139414 to 138638. [2022-07-13 20:09:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138638 states, 124020 states have (on average 1.5235203999354943) internal successors, (188947), 125049 states have internal predecessors, (188947), 9216 states have call successors, (9216), 4633 states have call predecessors, (9216), 5400 states have return successors, (26969), 9211 states have call predecessors, (26969), 9214 states have call successors, (26969) [2022-07-13 20:09:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138638 states to 138638 states and 225132 transitions. [2022-07-13 20:09:17,675 INFO L78 Accepts]: Start accepts. Automaton has 138638 states and 225132 transitions. Word has length 165 [2022-07-13 20:09:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:17,677 INFO L495 AbstractCegarLoop]: Abstraction has 138638 states and 225132 transitions. [2022-07-13 20:09:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:09:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 138638 states and 225132 transitions. [2022-07-13 20:09:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 20:09:17,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:17,918 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:09:17,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:09:18,131 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,SelfDestructingSolverStorable12 [2022-07-13 20:09:18,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:18,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1353738266, now seen corresponding path program 1 times [2022-07-13 20:09:18,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:18,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10659965] [2022-07-13 20:09:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:18,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 20:09:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 20:09:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 20:09:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:09:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 20:09:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:09:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 20:09:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:09:18,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:18,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10659965] [2022-07-13 20:09:18,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10659965] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:09:18,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14386150] [2022-07-13 20:09:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:18,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:09:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:09:18,264 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) [2022-07-13 20:09:18,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:09:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:18,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:09:18,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:09:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 20:09:18,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:09:18,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14386150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:18,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:09:18,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:09:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319707833] [2022-07-13 20:09:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:09:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:09:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:09:18,727 INFO L87 Difference]: Start difference. First operand 138638 states and 225132 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)