./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.12.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75bb47d196b7c0cfa74650bf56de75ff6699dc5c2700eb5e9ba9836562c6aee4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:56:56,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:56:56,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:56:56,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:56:56,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:56:56,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:56:56,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:56:56,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:56:56,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:56:56,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:56:56,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:56:56,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:56:56,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:56:56,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:56:56,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:56:56,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:56:56,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:56:56,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:56:56,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:56:56,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:56:56,493 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:56:56,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:56:56,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:56:56,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:56:56,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:56:56,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:56:56,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:56:56,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:56:56,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:56:56,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:56:56,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:56:56,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:56:56,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:56:56,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:56:56,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:56:56,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:56:56,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:56:56,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:56:56,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:56:56,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:56:56,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:56:56,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:56:56,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:56:56,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:56:56,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:56:56,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:56:56,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:56:56,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:56:56,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:56:56,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:56:56,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:56:56,554 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:56:56,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:56:56,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:56:56,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:56:56,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:56:56,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:56:56,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:56:56,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:56:56,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:56:56,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:56:56,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:56:56,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:56:56,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:56:56,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:56:56,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:56:56,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:56:56,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:56:56,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:56:56,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:56:56,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:56:56,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:56:56,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:56:56,559 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:56:56,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:56:56,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:56:56,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75bb47d196b7c0cfa74650bf56de75ff6699dc5c2700eb5e9ba9836562c6aee4 [2022-07-13 19:56:56,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:56:56,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:56:56,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:56:56,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:56:56,809 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:56:56,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.12.cil-1.c [2022-07-13 19:56:56,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dacf4f81/d318951a636a4516af0fe3fab20c6344/FLAGb492234a3 [2022-07-13 19:56:57,620 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:56:57,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.12.cil-1.c [2022-07-13 19:56:57,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dacf4f81/d318951a636a4516af0fe3fab20c6344/FLAGb492234a3 [2022-07-13 19:56:58,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dacf4f81/d318951a636a4516af0fe3fab20c6344 [2022-07-13 19:56:58,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:56:58,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:56:58,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:56:58,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:56:58,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:56:58,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:56:58" (1/1) ... [2022-07-13 19:56:58,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599c73a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:58, skipping insertion in model container [2022-07-13 19:56:58,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:56:58" (1/1) ... [2022-07-13 19:56:58,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:56:58,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:56:59,956 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_label43+token_ring.12.cil-1.c[381679,381692] [2022-07-13 19:56:59,983 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_label43+token_ring.12.cil-1.c[383339,383352] [2022-07-13 19:57:00,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:57:00,259 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:57:01,076 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_label43+token_ring.12.cil-1.c[381679,381692] [2022-07-13 19:57:01,080 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_label43+token_ring.12.cil-1.c[383339,383352] [2022-07-13 19:57:01,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:57:01,193 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:57:01,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01 WrapperNode [2022-07-13 19:57:01,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:57:01,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:57:01,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:57:01,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:57:01,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:01,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:01,649 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2022-07-13 19:57:01,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:57:01,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:57:01,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:57:01,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:57:01,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:01,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:01,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:01,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:02,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:02,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:02,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:02,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:57:02,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:57:02,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:57:02,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:57:02,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (1/1) ... [2022-07-13 19:57:02,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:57:02,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:57:02,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:57:02,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:57:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:57:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:57:02,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:57:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:57:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:57:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:57:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:57:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 19:57:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 19:57:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:57:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:57:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:57:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:57:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:57:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:57:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:57:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:57:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:57:02,622 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:57:02,624 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:57:08,650 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:57:08,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:57:08,769 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 19:57:08,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:57:08 BoogieIcfgContainer [2022-07-13 19:57:08,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:57:08,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:57:08,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:57:08,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:57:08,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:56:58" (1/3) ... [2022-07-13 19:57:08,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539a9635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:57:08, skipping insertion in model container [2022-07-13 19:57:08,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:57:01" (2/3) ... [2022-07-13 19:57:08,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539a9635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:57:08, skipping insertion in model container [2022-07-13 19:57:08,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:57:08" (3/3) ... [2022-07-13 19:57:08,785 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.12.cil-1.c [2022-07-13 19:57:08,798 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:57:08,798 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:57:08,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:57:08,916 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@51da6038, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@277e5743 [2022-07-13 19:57:08,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:57:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-13 19:57:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:08,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:08,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:08,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2022-07-13 19:57:08,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:08,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128631347] [2022-07-13 19:57:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:09,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:09,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128631347] [2022-07-13 19:57:09,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128631347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:09,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:09,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:57:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012619729] [2022-07-13 19:57:09,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:09,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:57:09,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:57:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:57:09,517 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:11,417 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2022-07-13 19:57:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:57:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:11,450 INFO L225 Difference]: With dead ends: 5281 [2022-07-13 19:57:11,451 INFO L226 Difference]: Without dead ends: 2647 [2022-07-13 19:57:11,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:57:11,467 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 1048 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17178 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:11,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 17178 Invalid, 787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:57:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-07-13 19:57:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-07-13 19:57:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 19:57:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2022-07-13 19:57:11,612 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2022-07-13 19:57:11,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:11,613 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2022-07-13 19:57:11,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2022-07-13 19:57:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:11,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:11,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:11,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:57:11,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2022-07-13 19:57:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:11,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203078979] [2022-07-13 19:57:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:11,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:11,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203078979] [2022-07-13 19:57:11,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203078979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:11,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:11,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:57:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669806440] [2022-07-13 19:57:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:11,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:57:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:57:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:57:11,797 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:13,200 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2022-07-13 19:57:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:57:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:13,213 INFO L225 Difference]: With dead ends: 3016 [2022-07-13 19:57:13,213 INFO L226 Difference]: Without dead ends: 2647 [2022-07-13 19:57:13,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:57:13,217 INFO L413 NwaCegarLoop]: 4625 mSDtfsCounter, 1034 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:13,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 16905 Invalid, 786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 19:57:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-07-13 19:57:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-07-13 19:57:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 19:57:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2022-07-13 19:57:13,285 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2022-07-13 19:57:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:13,286 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2022-07-13 19:57:13,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2022-07-13 19:57:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:13,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:13,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:13,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:57:13,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:13,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2022-07-13 19:57:13,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:13,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649215041] [2022-07-13 19:57:13,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:13,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:13,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649215041] [2022-07-13 19:57:13,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649215041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:13,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:13,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:57:13,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686632054] [2022-07-13 19:57:13,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:13,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:57:13,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:57:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:57:13,462 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:16,467 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2022-07-13 19:57:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:57:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:16,482 INFO L225 Difference]: With dead ends: 3535 [2022-07-13 19:57:16,482 INFO L226 Difference]: Without dead ends: 3171 [2022-07-13 19:57:16,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:57:16,486 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5525 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 17531 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:16,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5544 Valid, 17531 Invalid, 2142 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 19:57:16,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-07-13 19:57:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2022-07-13 19:57:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-13 19:57:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2022-07-13 19:57:16,603 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2022-07-13 19:57:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2022-07-13 19:57:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2022-07-13 19:57:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:16,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:16,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:16,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:57:16,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:16,609 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2022-07-13 19:57:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:16,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87942497] [2022-07-13 19:57:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:16,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:16,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87942497] [2022-07-13 19:57:16,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87942497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:16,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:16,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:16,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98801059] [2022-07-13 19:57:16,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:16,794 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:20,460 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2022-07-13 19:57:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:20,478 INFO L225 Difference]: With dead ends: 4458 [2022-07-13 19:57:20,479 INFO L226 Difference]: Without dead ends: 3713 [2022-07-13 19:57:20,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:20,485 INFO L413 NwaCegarLoop]: 4988 mSDtfsCounter, 5553 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 22772 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:20,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 22772 Invalid, 3219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 19:57:20,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-13 19:57:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2022-07-13 19:57:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-13 19:57:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2022-07-13 19:57:20,633 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2022-07-13 19:57:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:20,634 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2022-07-13 19:57:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2022-07-13 19:57:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:20,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:20,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:20,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:57:20,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2022-07-13 19:57:20,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:20,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834426865] [2022-07-13 19:57:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:20,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:20,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834426865] [2022-07-13 19:57:20,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834426865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:20,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:20,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163689350] [2022-07-13 19:57:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:20,862 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:24,123 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2022-07-13 19:57:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:24,145 INFO L225 Difference]: With dead ends: 5819 [2022-07-13 19:57:24,146 INFO L226 Difference]: Without dead ends: 4720 [2022-07-13 19:57:24,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:24,162 INFO L413 NwaCegarLoop]: 4721 mSDtfsCounter, 5664 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:24,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5683 Valid, 21831 Invalid, 2908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 19:57:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-07-13 19:57:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2022-07-13 19:57:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-13 19:57:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2022-07-13 19:57:24,376 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2022-07-13 19:57:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2022-07-13 19:57:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2022-07-13 19:57:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:24,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:24,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:24,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:57:24,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2022-07-13 19:57:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:24,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820011682] [2022-07-13 19:57:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:24,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:24,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820011682] [2022-07-13 19:57:24,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820011682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:24,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:24,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089652631] [2022-07-13 19:57:24,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:24,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:24,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:24,605 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:28,120 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2022-07-13 19:57:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:28,151 INFO L225 Difference]: With dead ends: 8436 [2022-07-13 19:57:28,152 INFO L226 Difference]: Without dead ends: 6628 [2022-07-13 19:57:28,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:28,161 INFO L413 NwaCegarLoop]: 4976 mSDtfsCounter, 5548 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 22760 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:28,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 22760 Invalid, 3223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 19:57:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2022-07-13 19:57:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2022-07-13 19:57:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-13 19:57:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2022-07-13 19:57:28,440 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2022-07-13 19:57:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:28,441 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2022-07-13 19:57:28,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2022-07-13 19:57:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:28,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:28,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:28,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:57:28,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2022-07-13 19:57:28,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:28,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131022790] [2022-07-13 19:57:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:28,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:28,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:28,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:28,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131022790] [2022-07-13 19:57:28,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131022790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:28,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:28,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750538598] [2022-07-13 19:57:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:28,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:28,629 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:32,079 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2022-07-13 19:57:32,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:32,120 INFO L225 Difference]: With dead ends: 13662 [2022-07-13 19:57:32,120 INFO L226 Difference]: Without dead ends: 10435 [2022-07-13 19:57:32,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:32,135 INFO L413 NwaCegarLoop]: 4968 mSDtfsCounter, 5543 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 22752 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:32,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5562 Valid, 22752 Invalid, 3204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 19:57:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-07-13 19:57:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2022-07-13 19:57:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-13 19:57:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2022-07-13 19:57:32,636 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2022-07-13 19:57:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:32,637 INFO L495 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2022-07-13 19:57:32,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2022-07-13 19:57:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:32,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:32,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:32,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:57:32,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2022-07-13 19:57:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856021948] [2022-07-13 19:57:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:32,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:32,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:32,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856021948] [2022-07-13 19:57:32,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856021948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:32,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:32,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:32,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743444628] [2022-07-13 19:57:32,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:32,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:32,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:32,807 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:36,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:36,736 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2022-07-13 19:57:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:36,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:36,815 INFO L225 Difference]: With dead ends: 24132 [2022-07-13 19:57:36,816 INFO L226 Difference]: Without dead ends: 18053 [2022-07-13 19:57:36,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:36,925 INFO L413 NwaCegarLoop]: 4963 mSDtfsCounter, 5542 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 22747 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5561 Valid, 22747 Invalid, 3196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 19:57:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2022-07-13 19:57:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2022-07-13 19:57:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-13 19:57:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2022-07-13 19:57:37,897 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2022-07-13 19:57:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:37,897 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2022-07-13 19:57:37,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2022-07-13 19:57:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:37,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:37,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:37,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:57:37,907 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:37,908 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2022-07-13 19:57:37,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:37,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350959309] [2022-07-13 19:57:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:37,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:38,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:38,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350959309] [2022-07-13 19:57:38,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350959309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513804096] [2022-07-13 19:57:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:38,075 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:40,758 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2022-07-13 19:57:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 19:57:40,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:40,828 INFO L225 Difference]: With dead ends: 30100 [2022-07-13 19:57:40,829 INFO L226 Difference]: Without dead ends: 18304 [2022-07-13 19:57:40,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:57:40,876 INFO L413 NwaCegarLoop]: 4601 mSDtfsCounter, 5093 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21397 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:40,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5113 Valid, 21397 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:57:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2022-07-13 19:57:41,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2022-07-13 19:57:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-13 19:57:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2022-07-13 19:57:41,972 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2022-07-13 19:57:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:41,973 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2022-07-13 19:57:41,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2022-07-13 19:57:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:41,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:41,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:41,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:57:41,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2022-07-13 19:57:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:41,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440992730] [2022-07-13 19:57:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:42,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440992730] [2022-07-13 19:57:42,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440992730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:42,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:42,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438494404] [2022-07-13 19:57:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:42,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:42,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:42,171 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:47,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:47,463 INFO L93 Difference]: Finished difference Result 45037 states and 72769 transitions. [2022-07-13 19:57:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:47,582 INFO L225 Difference]: With dead ends: 45037 [2022-07-13 19:57:47,582 INFO L226 Difference]: Without dead ends: 33241 [2022-07-13 19:57:47,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:47,621 INFO L413 NwaCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22736 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:47,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5553 Valid, 22736 Invalid, 3169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 19:57:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33241 states. [2022-07-13 19:57:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33241 to 25435. [2022-07-13 19:57:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25435 states, 23607 states have (on average 1.5927055534375396) internal successors, (37599), 23674 states have internal predecessors, (37599), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-07-13 19:57:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25435 states to 25435 states and 41134 transitions. [2022-07-13 19:57:49,436 INFO L78 Accepts]: Start accepts. Automaton has 25435 states and 41134 transitions. Word has length 179 [2022-07-13 19:57:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:49,436 INFO L495 AbstractCegarLoop]: Abstraction has 25435 states and 41134 transitions. [2022-07-13 19:57:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25435 states and 41134 transitions. [2022-07-13 19:57:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:57:49,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:49,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:49,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:57:49,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2022-07-13 19:57:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361009501] [2022-07-13 19:57:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:49,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:57:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:57:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:57:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:49,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:57:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361009501] [2022-07-13 19:57:49,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361009501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:49,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:49,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96848784] [2022-07-13 19:57:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:49,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:49,606 INFO L87 Difference]: Start difference. First operand 25435 states and 41134 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:57,133 INFO L93 Difference]: Finished difference Result 86917 states and 140729 transitions. [2022-07-13 19:57:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:57:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:57,345 INFO L225 Difference]: With dead ends: 86917 [2022-07-13 19:57:57,345 INFO L226 Difference]: Without dead ends: 63623 [2022-07-13 19:57:57,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:57,413 INFO L413 NwaCegarLoop]: 4947 mSDtfsCounter, 5533 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5552 SdHoareTripleChecker+Valid, 22731 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:57,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5552 Valid, 22731 Invalid, 3161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 19:57:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63623 states. [2022-07-13 19:58:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63623 to 48492. [2022-07-13 19:58:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48492 states, 44872 states have (on average 1.5789133535389552) internal successors, (70849), 45003 states have internal predecessors, (70849), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-07-13 19:58:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48492 states to 48492 states and 78594 transitions. [2022-07-13 19:58:00,738 INFO L78 Accepts]: Start accepts. Automaton has 48492 states and 78594 transitions. Word has length 179 [2022-07-13 19:58:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:58:00,739 INFO L495 AbstractCegarLoop]: Abstraction has 48492 states and 78594 transitions. [2022-07-13 19:58:00,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:58:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 48492 states and 78594 transitions. [2022-07-13 19:58:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:58:00,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:58:00,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:58:00,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:58:00,769 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:58:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:58:00,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2022-07-13 19:58:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:58:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491495459] [2022-07-13 19:58:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:58:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:58:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:58:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:58:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:58:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:58:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:58:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:58:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:58:01,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491495459] [2022-07-13 19:58:01,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491495459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:58:01,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:58:01,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:58:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664244778] [2022-07-13 19:58:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:58:01,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:58:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:58:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:58:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:58:01,071 INFO L87 Difference]: Start difference. First operand 48492 states and 78594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:58:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:58:13,732 INFO L93 Difference]: Finished difference Result 170676 states and 278495 transitions. [2022-07-13 19:58:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:58:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-13 19:58:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:58:14,235 INFO L225 Difference]: With dead ends: 170676 [2022-07-13 19:58:14,235 INFO L226 Difference]: Without dead ends: 124325 [2022-07-13 19:58:14,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:58:14,375 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 5634 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21805 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:58:14,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5653 Valid, 21805 Invalid, 2861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 19:58:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124325 states. [2022-07-13 19:58:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124325 to 94733. [2022-07-13 19:58:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94733 states, 87529 states have (on average 1.5713534942704703) internal successors, (137539), 87788 states have internal predecessors, (137539), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-13 19:58:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94733 states to 94733 states and 155162 transitions. [2022-07-13 19:58:22,052 INFO L78 Accepts]: Start accepts. Automaton has 94733 states and 155162 transitions. Word has length 179 [2022-07-13 19:58:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:58:22,053 INFO L495 AbstractCegarLoop]: Abstraction has 94733 states and 155162 transitions. [2022-07-13 19:58:22,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:58:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 94733 states and 155162 transitions. [2022-07-13 19:58:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 19:58:22,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:58:22,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:58:22,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 19:58:22,107 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:58:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:58:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash 953780728, now seen corresponding path program 1 times [2022-07-13 19:58:22,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:58:22,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800436269] [2022-07-13 19:58:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:58:22,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:58:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:58:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:22,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:58:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:58:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 19:58:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 19:58:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:58:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:58:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:58:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800436269] [2022-07-13 19:58:22,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800436269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:58:22,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:58:22,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:58:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883953299] [2022-07-13 19:58:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:58:22,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:58:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:58:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:58:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:58:22,263 INFO L87 Difference]: Start difference. First operand 94733 states and 155162 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)