./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.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 8321a367d25b54b23b2762d5ecbfeee51530317d33e488964270d878a9001f5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:25:02,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:25:02,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:25:02,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:25:02,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:25:02,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:25:02,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:25:02,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:25:02,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:25:02,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:25:02,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:25:02,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:25:02,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:25:02,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:25:02,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:25:02,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:25:02,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:25:02,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:25:02,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:25:02,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:25:02,413 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:25:02,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:25:02,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:25:02,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:25:02,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:25:02,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:25:02,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:25:02,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:25:02,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:25:02,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:25:02,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:25:02,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:25:02,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:25:02,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:25:02,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:25:02,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:25:02,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:25:02,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:25:02,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:25:02,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:25:02,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:25:02,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:25:02,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:25:02,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:25:02,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:25:02,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:25:02,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:25:02,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:25:02,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:25:02,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:25:02,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:25:02,461 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:25:02,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:25:02,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:25:02,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:25:02,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:25:02,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:25:02,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:25:02,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:25:02,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:25:02,463 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:25:02,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:25:02,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:25:02,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:25:02,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:25:02,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:25:02,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:25:02,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:25:02,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:25:02,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:25:02,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:25:02,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:25:02,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:25:02,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:25:02,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:25:02,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:25:02,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8321a367d25b54b23b2762d5ecbfeee51530317d33e488964270d878a9001f5b [2022-07-12 08:25:02,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:25:02,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:25:02,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:25:02,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:25:02,697 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:25:02,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c [2022-07-12 08:25:02,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5b019ea/7d91d76916804ea1b2811d7cef4f9ab0/FLAG1f7174241 [2022-07-12 08:25:03,474 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:25:03,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c [2022-07-12 08:25:03,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5b019ea/7d91d76916804ea1b2811d7cef4f9ab0/FLAG1f7174241 [2022-07-12 08:25:03,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5b019ea/7d91d76916804ea1b2811d7cef4f9ab0 [2022-07-12 08:25:03,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:25:03,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:25:03,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:25:03,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:25:03,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:25:03,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:25:03" (1/1) ... [2022-07-12 08:25:03,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2524b320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:03, skipping insertion in model container [2022-07-12 08:25:03,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:25:03" (1/1) ... [2022-07-12 08:25:03,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:25:03,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:25:04,803 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_label47+token_ring.06.cil-2.c[377612,377625] [2022-07-12 08:25:04,823 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_label47+token_ring.06.cil-2.c[383339,383352] [2022-07-12 08:25:04,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:25:04,934 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:25:05,546 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_label47+token_ring.06.cil-2.c[377612,377625] [2022-07-12 08:25:05,552 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_label47+token_ring.06.cil-2.c[383339,383352] [2022-07-12 08:25:05,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:25:05,599 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:25:05,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05 WrapperNode [2022-07-12 08:25:05,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:25:05,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:25:05,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:25:05,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:25:05,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:05,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:05,968 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2022-07-12 08:25:05,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:25:05,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:25:05,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:25:05,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:25:05,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:05,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:25:06,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:25:06,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:25:06,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:25:06,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (1/1) ... [2022-07-12 08:25:06,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:25:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:25:06,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:25:06,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:25:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:25:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:25:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:25:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:25:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:25:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:25:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:25:06,407 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:25:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:25:06,407 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:25:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:25:06,407 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:25:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:25:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:25:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:25:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:25:06,586 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:25:06,587 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:25:11,140 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:25:11,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:25:11,167 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-12 08:25:11,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:25:11 BoogieIcfgContainer [2022-07-12 08:25:11,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:25:11,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:25:11,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:25:11,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:25:11,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:25:03" (1/3) ... [2022-07-12 08:25:11,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec448bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:25:11, skipping insertion in model container [2022-07-12 08:25:11,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:25:05" (2/3) ... [2022-07-12 08:25:11,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec448bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:25:11, skipping insertion in model container [2022-07-12 08:25:11,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:25:11" (3/3) ... [2022-07-12 08:25:11,181 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.06.cil-2.c [2022-07-12 08:25:11,192 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:25:11,192 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:25:11,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:25:11,275 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@49436678, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@483e09df [2022-07-12 08:25:11,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:25:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 08:25:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:11,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:11,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:11,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2022-07-12 08:25:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441324906] [2022-07-12 08:25:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:11,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:11,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441324906] [2022-07-12 08:25:11,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441324906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:11,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:11,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:25:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641579565] [2022-07-12 08:25:11,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:11,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:25:11,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:25:11,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:25:11,706 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:12,416 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2022-07-12 08:25:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:25:12,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:12,439 INFO L225 Difference]: With dead ends: 4896 [2022-07-12 08:25:12,440 INFO L226 Difference]: Without dead ends: 2424 [2022-07-12 08:25:12,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:25:12,451 INFO L413 NwaCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16714 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:12,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 16714 Invalid, 454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:25:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-12 08:25:12,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2022-07-12 08:25:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 08:25:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2022-07-12 08:25:12,538 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2022-07-12 08:25:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:12,538 INFO L495 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2022-07-12 08:25:12,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2022-07-12 08:25:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:12,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:12,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:25:12,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2022-07-12 08:25:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:12,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840300962] [2022-07-12 08:25:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:12,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840300962] [2022-07-12 08:25:12,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840300962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:12,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:12,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101156365] [2022-07-12 08:25:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:12,656 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:14,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:14,466 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2022-07-12 08:25:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:25:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:14,475 INFO L225 Difference]: With dead ends: 2945 [2022-07-12 08:25:14,475 INFO L226 Difference]: Without dead ends: 2732 [2022-07-12 08:25:14,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:25:14,477 INFO L413 NwaCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 21478 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:14,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4789 Valid, 21478 Invalid, 1933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 08:25:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-07-12 08:25:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2022-07-12 08:25:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-12 08:25:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2022-07-12 08:25:14,525 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2022-07-12 08:25:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:14,525 INFO L495 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2022-07-12 08:25:14,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2022-07-12 08:25:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:14,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:14,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:14,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:25:14,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2022-07-12 08:25:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:14,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049724645] [2022-07-12 08:25:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:14,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:14,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049724645] [2022-07-12 08:25:14,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049724645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:14,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:14,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130299203] [2022-07-12 08:25:14,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:14,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:14,648 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:16,068 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2022-07-12 08:25:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:25:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:16,081 INFO L225 Difference]: With dead ends: 3704 [2022-07-12 08:25:16,081 INFO L226 Difference]: Without dead ends: 3270 [2022-07-12 08:25:16,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:25:16,084 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 4800 mSDsluCounter, 16875 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 21362 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:16,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4813 Valid, 21362 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:25:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-07-12 08:25:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2022-07-12 08:25:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-07-12 08:25:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2022-07-12 08:25:16,146 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2022-07-12 08:25:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:16,146 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2022-07-12 08:25:16,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2022-07-12 08:25:16,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:16,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:16,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:16,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:25:16,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2022-07-12 08:25:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:16,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736033334] [2022-07-12 08:25:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:16,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:16,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736033334] [2022-07-12 08:25:16,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736033334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:16,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:16,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:16,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70734169] [2022-07-12 08:25:16,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:16,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:16,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:16,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:16,241 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:17,912 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2022-07-12 08:25:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:25:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:17,926 INFO L225 Difference]: With dead ends: 5188 [2022-07-12 08:25:17,927 INFO L226 Difference]: Without dead ends: 4344 [2022-07-12 08:25:17,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:25:17,930 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:17,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21469 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 08:25:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-07-12 08:25:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2022-07-12 08:25:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-07-12 08:25:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2022-07-12 08:25:18,036 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2022-07-12 08:25:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:18,036 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2022-07-12 08:25:18,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2022-07-12 08:25:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:18,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:18,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:18,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:25:18,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2022-07-12 08:25:18,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:18,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836296118] [2022-07-12 08:25:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:18,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836296118] [2022-07-12 08:25:18,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836296118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:18,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:18,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:18,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032124823] [2022-07-12 08:25:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:18,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:18,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:18,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:18,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:18,135 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:19,619 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2022-07-12 08:25:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:25:19,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:19,643 INFO L225 Difference]: With dead ends: 8154 [2022-07-12 08:25:19,643 INFO L226 Difference]: Without dead ends: 6488 [2022-07-12 08:25:19,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:25:19,651 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21466 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:19,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21466 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:25:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-07-12 08:25:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2022-07-12 08:25:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-07-12 08:25:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2022-07-12 08:25:19,898 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2022-07-12 08:25:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:19,899 INFO L495 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2022-07-12 08:25:19,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2022-07-12 08:25:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:19,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:19,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:25:19,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2022-07-12 08:25:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:19,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674379248] [2022-07-12 08:25:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:19,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674379248] [2022-07-12 08:25:19,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674379248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:19,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:19,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806552158] [2022-07-12 08:25:19,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:19,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:20,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:20,000 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:21,695 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2022-07-12 08:25:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:25:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:21,743 INFO L225 Difference]: With dead ends: 14084 [2022-07-12 08:25:21,743 INFO L226 Difference]: Without dead ends: 10768 [2022-07-12 08:25:21,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:25:21,761 INFO L413 NwaCegarLoop]: 4525 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21463 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:21,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21463 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:25:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2022-07-12 08:25:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2022-07-12 08:25:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-07-12 08:25:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2022-07-12 08:25:22,151 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2022-07-12 08:25:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:22,151 INFO L495 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2022-07-12 08:25:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2022-07-12 08:25:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:22,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:22,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:22,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:25:22,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2022-07-12 08:25:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45787526] [2022-07-12 08:25:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:22,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:22,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:22,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45787526] [2022-07-12 08:25:22,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45787526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:22,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:22,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207250096] [2022-07-12 08:25:22,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:22,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:22,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:22,253 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:24,038 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2022-07-12 08:25:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:25:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:24,096 INFO L225 Difference]: With dead ends: 25942 [2022-07-12 08:25:24,096 INFO L226 Difference]: Without dead ends: 19312 [2022-07-12 08:25:24,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:25:24,123 INFO L413 NwaCegarLoop]: 4522 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21460 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:24,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21460 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:25:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2022-07-12 08:25:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2022-07-12 08:25:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-07-12 08:25:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2022-07-12 08:25:24,703 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2022-07-12 08:25:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:24,703 INFO L495 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2022-07-12 08:25:24,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2022-07-12 08:25:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:24,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:24,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:24,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:25:24,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:24,716 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2022-07-12 08:25:24,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:24,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413207892] [2022-07-12 08:25:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:24,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:24,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413207892] [2022-07-12 08:25:24,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413207892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:24,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:24,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781264356] [2022-07-12 08:25:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:24,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:24,802 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:27,751 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2022-07-12 08:25:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:25:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:27,886 INFO L225 Difference]: With dead ends: 55608 [2022-07-12 08:25:27,886 INFO L226 Difference]: Without dead ends: 42320 [2022-07-12 08:25:27,937 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 [2022-07-12 08:25:27,938 INFO L413 NwaCegarLoop]: 4515 mSDtfsCounter, 5030 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5050 SdHoareTripleChecker+Valid, 21445 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:27,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5050 Valid, 21445 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 08:25:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2022-07-12 08:25:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2022-07-12 08:25:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-07-12 08:25:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2022-07-12 08:25:29,291 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2022-07-12 08:25:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:29,291 INFO L495 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2022-07-12 08:25:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2022-07-12 08:25:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:29,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:29,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:29,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:25:29,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2022-07-12 08:25:29,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924726181] [2022-07-12 08:25:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:29,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:29,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924726181] [2022-07-12 08:25:29,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924726181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:29,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:29,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:29,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162121932] [2022-07-12 08:25:29,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:29,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:29,392 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:34,508 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2022-07-12 08:25:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:25:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:34,791 INFO L225 Difference]: With dead ends: 105085 [2022-07-12 08:25:34,791 INFO L226 Difference]: Without dead ends: 78611 [2022-07-12 08:25:34,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:25:34,880 INFO L413 NwaCegarLoop]: 4507 mSDtfsCounter, 4964 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:34,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 21437 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:25:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2022-07-12 08:25:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2022-07-12 08:25:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-07-12 08:25:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2022-07-12 08:25:37,859 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2022-07-12 08:25:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:37,860 INFO L495 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2022-07-12 08:25:37,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2022-07-12 08:25:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:37,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:37,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:37,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:25:37,890 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2022-07-12 08:25:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398815128] [2022-07-12 08:25:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:37,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398815128] [2022-07-12 08:25:37,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398815128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:37,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:37,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715823903] [2022-07-12 08:25:37,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:37,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:37,973 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:25:47,102 INFO L93 Difference]: Finished difference Result 203331 states and 339677 transitions. [2022-07-12 08:25:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:25:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:25:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:25:47,698 INFO L225 Difference]: With dead ends: 203331 [2022-07-12 08:25:47,698 INFO L226 Difference]: Without dead ends: 150423 [2022-07-12 08:25:47,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:25:47,831 INFO L413 NwaCegarLoop]: 4472 mSDtfsCounter, 4937 mSDsluCounter, 16870 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21342 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:25:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4957 Valid, 21342 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:25:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150423 states. [2022-07-12 08:25:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150423 to 107785. [2022-07-12 08:25:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107785 states, 97280 states have (on average 1.5522615131578947) internal successors, (151004), 97794 states have internal predecessors, (151004), 6919 states have call successors, (6919), 3072 states have call predecessors, (6919), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2022-07-12 08:25:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107785 states to 107785 states and 185549 transitions. [2022-07-12 08:25:54,270 INFO L78 Accepts]: Start accepts. Automaton has 107785 states and 185549 transitions. Word has length 112 [2022-07-12 08:25:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:25:54,270 INFO L495 AbstractCegarLoop]: Abstraction has 107785 states and 185549 transitions. [2022-07-12 08:25:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:25:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 107785 states and 185549 transitions. [2022-07-12 08:25:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 08:25:54,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:25:54,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:25:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:25:54,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:25:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:25:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2022-07-12 08:25:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:25:54,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022698324] [2022-07-12 08:25:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:25:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:25:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:25:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 08:25:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 08:25:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:54,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:25:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:25:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:25:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:25:54,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:25:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022698324] [2022-07-12 08:25:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022698324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:25:54,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:25:54,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:25:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484482927] [2022-07-12 08:25:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:25:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:25:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:25:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:25:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:25:54,655 INFO L87 Difference]: Start difference. First operand 107785 states and 185549 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:11,867 INFO L93 Difference]: Finished difference Result 395087 states and 686589 transitions. [2022-07-12 08:26:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:11,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-12 08:26:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.