./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.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_label45+token_ring.11.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 88d274727136b53784890e6d1e1bf78dc0f4647c470f9c2edec85a87ad689472 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:00:39,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:00:39,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:00:39,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:00:39,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:00:39,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:00:39,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:00:39,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:00:39,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:00:39,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:00:39,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:00:39,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:00:39,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:00:39,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:00:39,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:00:39,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:00:39,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:00:39,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:00:39,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:00:39,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:00:39,579 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:00:39,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:00:39,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:00:39,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:00:39,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:00:39,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:00:39,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:00:39,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:00:39,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:00:39,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:00:39,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:00:39,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:00:39,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:00:39,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:00:39,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:00:39,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:00:39,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:00:39,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:00:39,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:00:39,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:00:39,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:00:39,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:00:39,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:00:39,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:00:39,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:00:39,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:00:39,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:00:39,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:00:39,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:00:39,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:00:39,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:00:39,621 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:00:39,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:00:39,622 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:00:39,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:00:39,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:00:39,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:00:39,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:00:39,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:00:39,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:00:39,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:00:39,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:00:39,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:00:39,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:00:39,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:00:39,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:00:39,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:00:39,625 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:00:39,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:00:39,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:00:39,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d274727136b53784890e6d1e1bf78dc0f4647c470f9c2edec85a87ad689472 [2022-07-13 20:00:39,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:00:39,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:00:39,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:00:39,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:00:39,874 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:00:39,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c [2022-07-13 20:00:39,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bea8e3b0/a9ce6330caf54b309c76f4c4556776d9/FLAGfe27cd691 [2022-07-13 20:00:40,741 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:00:40,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c [2022-07-13 20:00:40,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bea8e3b0/a9ce6330caf54b309c76f4c4556776d9/FLAGfe27cd691 [2022-07-13 20:00:40,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bea8e3b0/a9ce6330caf54b309c76f4c4556776d9 [2022-07-13 20:00:40,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:00:40,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:00:40,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:00:40,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:00:40,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:00:40,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:00:40" (1/1) ... [2022-07-13 20:00:40,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1575713d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:40, skipping insertion in model container [2022-07-13 20:00:40,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:00:40" (1/1) ... [2022-07-13 20:00:40,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:00:41,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:00:42,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c[380323,380336] [2022-07-13 20:00:42,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c[383339,383352] [2022-07-13 20:00:42,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:00:42,653 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:00:43,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c[380323,380336] [2022-07-13 20:00:43,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c[383339,383352] [2022-07-13 20:00:43,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:00:43,473 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:00:43,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43 WrapperNode [2022-07-13 20:00:43,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:00:43,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:00:43,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:00:43,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:00:43,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:43,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:43,949 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2022-07-13 20:00:43,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:00:43,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:00:43,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:00:43,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:00:43,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:43,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:43,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:43,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:44,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:44,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:44,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:44,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:00:44,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:00:44,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:00:44,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:00:44,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (1/1) ... [2022-07-13 20:00:44,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:00:44,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:00:44,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:00:44,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:00:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:00:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:00:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:00:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:00:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:00:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:00:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:00:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 20:00:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 20:00:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:00:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:00:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:00:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:00:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:00:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:00:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:00:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:00:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:00:44,620 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:00:44,622 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:00:49,822 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:00:49,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:00:49,843 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-13 20:00:49,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:00:49 BoogieIcfgContainer [2022-07-13 20:00:49,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:00:49,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:00:49,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:00:49,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:00:49,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:00:40" (1/3) ... [2022-07-13 20:00:49,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edae429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:00:49, skipping insertion in model container [2022-07-13 20:00:49,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:43" (2/3) ... [2022-07-13 20:00:49,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edae429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:00:49, skipping insertion in model container [2022-07-13 20:00:49,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:00:49" (3/3) ... [2022-07-13 20:00:49,852 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.11.cil-1.c [2022-07-13 20:00:49,862 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:00:49,862 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:00:49,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:00:49,927 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@43b2cfaf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@356e44fe [2022-07-13 20:00:49,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:00:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 20:00:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:00:49,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:49,957 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] [2022-07-13 20:00:49,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2022-07-13 20:00:49,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:49,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355922401] [2022-07-13 20:00:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:00:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:00:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:00:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:00:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:50,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355922401] [2022-07-13 20:00:50,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355922401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:50,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:50,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:00:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810588367] [2022-07-13 20:00:50,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:50,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:00:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:00:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:00:50,448 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:51,969 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2022-07-13 20:00:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:00:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 168 [2022-07-13 20:00:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:52,103 INFO L225 Difference]: With dead ends: 5214 [2022-07-13 20:00:52,108 INFO L226 Difference]: Without dead ends: 2611 [2022-07-13 20:00:52,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:00:52,121 INFO L413 NwaCegarLoop]: 4649 mSDtfsCounter, 967 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 17106 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:52,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 17106 Invalid, 732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 20:00:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-07-13 20:00:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2022-07-13 20:00:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 20:00:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2022-07-13 20:00:52,263 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2022-07-13 20:00:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:52,264 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2022-07-13 20:00:52,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2022-07-13 20:00:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:00:52,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:52,272 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] [2022-07-13 20:00:52,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:00:52,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2022-07-13 20:00:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582170555] [2022-07-13 20:00:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:00:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:00:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:00:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:00:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:52,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:52,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582170555] [2022-07-13 20:00:52,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582170555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:52,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:52,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:00:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809328951] [2022-07-13 20:00:52,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:52,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:00:52,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:00:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:00:52,423 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:54,821 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2022-07-13 20:00:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:00:54,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 168 [2022-07-13 20:00:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:54,833 INFO L225 Difference]: With dead ends: 3438 [2022-07-13 20:00:54,833 INFO L226 Difference]: Without dead ends: 3098 [2022-07-13 20:00:54,834 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 20:00:54,835 INFO L413 NwaCegarLoop]: 4628 mSDtfsCounter, 5411 mSDsluCounter, 12793 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 17421 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:54,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5429 Valid, 17421 Invalid, 1993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 20:00:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-07-13 20:00:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2022-07-13 20:00:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-13 20:00:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2022-07-13 20:00:54,899 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2022-07-13 20:00:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:54,900 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2022-07-13 20:00:54,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2022-07-13 20:00:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:00:54,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:54,902 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] [2022-07-13 20:00:54,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:00:54,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2022-07-13 20:00:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:54,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145495114] [2022-07-13 20:00:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:54,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:00:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:00:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:00:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:00:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145495114] [2022-07-13 20:00:55,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145495114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:55,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:55,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:55,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721319602] [2022-07-13 20:00:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:55,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:55,037 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:58,423 INFO L93 Difference]: Finished difference Result 4296 states and 7459 transitions. [2022-07-13 20:00:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:58,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:00:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:58,434 INFO L225 Difference]: With dead ends: 4296 [2022-07-13 20:00:58,435 INFO L226 Difference]: Without dead ends: 3601 [2022-07-13 20:00:58,436 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 20:00:58,437 INFO L413 NwaCegarLoop]: 4919 mSDtfsCounter, 5434 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 22578 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:58,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5452 Valid, 22578 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 20:00:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2022-07-13 20:00:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3165. [2022-07-13 20:00:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.7786085825747724) internal successors, (5471), 3081 states have internal predecessors, (5471), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-13 20:00:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5608 transitions. [2022-07-13 20:00:58,528 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5608 transitions. Word has length 168 [2022-07-13 20:00:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:58,529 INFO L495 AbstractCegarLoop]: Abstraction has 3165 states and 5608 transitions. [2022-07-13 20:00:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5608 transitions. [2022-07-13 20:00:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:00:58,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:58,531 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] [2022-07-13 20:00:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:00:58,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2022-07-13 20:00:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:58,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664989428] [2022-07-13 20:00:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:00:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:00:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:00:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:00:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:58,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664989428] [2022-07-13 20:00:58,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664989428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:58,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:58,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:58,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309306671] [2022-07-13 20:00:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:58,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:58,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:58,694 INFO L87 Difference]: Start difference. First operand 3165 states and 5608 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:01,589 INFO L93 Difference]: Finished difference Result 5561 states and 9484 transitions. [2022-07-13 20:01:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:01,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:01,614 INFO L225 Difference]: With dead ends: 5561 [2022-07-13 20:01:01,616 INFO L226 Difference]: Without dead ends: 4536 [2022-07-13 20:01:01,622 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 20:01:01,631 INFO L413 NwaCegarLoop]: 4911 mSDtfsCounter, 5431 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5449 SdHoareTripleChecker+Valid, 22570 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:01,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5449 Valid, 22570 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 20:01:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-07-13 20:01:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3826. [2022-07-13 20:01:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3683 states have (on average 1.743687211512354) internal successors, (6422), 3690 states have internal predecessors, (6422), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-13 20:01:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 6647 transitions. [2022-07-13 20:01:01,787 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 6647 transitions. Word has length 168 [2022-07-13 20:01:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:01,788 INFO L495 AbstractCegarLoop]: Abstraction has 3826 states and 6647 transitions. [2022-07-13 20:01:01,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 6647 transitions. [2022-07-13 20:01:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:01,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:01,790 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] [2022-07-13 20:01:01,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:01:01,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2022-07-13 20:01:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558017029] [2022-07-13 20:01:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:01,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558017029] [2022-07-13 20:01:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558017029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:01,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:01,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997994569] [2022-07-13 20:01:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:01,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:01,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:01,903 INFO L87 Difference]: Start difference. First operand 3826 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:04,262 INFO L93 Difference]: Finished difference Result 7994 states and 13355 transitions. [2022-07-13 20:01:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:04,306 INFO L225 Difference]: With dead ends: 7994 [2022-07-13 20:01:04,307 INFO L226 Difference]: Without dead ends: 6308 [2022-07-13 20:01:04,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:01:04,315 INFO L413 NwaCegarLoop]: 4907 mSDtfsCounter, 5427 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 22566 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:04,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 22566 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 20:01:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2022-07-13 20:01:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5149. [2022-07-13 20:01:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 4898 states have (on average 1.699469171090241) internal successors, (8324), 4909 states have internal predecessors, (8324), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-13 20:01:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8731 transitions. [2022-07-13 20:01:04,511 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8731 transitions. Word has length 168 [2022-07-13 20:01:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 5149 states and 8731 transitions. [2022-07-13 20:01:04,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8731 transitions. [2022-07-13 20:01:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:04,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:04,514 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] [2022-07-13 20:01:04,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:01:04,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2022-07-13 20:01:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301719195] [2022-07-13 20:01:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:04,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:04,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:04,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301719195] [2022-07-13 20:01:04,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301719195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:04,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:04,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142031646] [2022-07-13 20:01:04,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:04,655 INFO L87 Difference]: Start difference. First operand 5149 states and 8731 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:07,793 INFO L93 Difference]: Finished difference Result 12859 states and 21113 transitions. [2022-07-13 20:01:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:07,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:07,839 INFO L225 Difference]: With dead ends: 12859 [2022-07-13 20:01:07,839 INFO L226 Difference]: Without dead ends: 9850 [2022-07-13 20:01:07,851 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 20:01:07,853 INFO L413 NwaCegarLoop]: 4903 mSDtfsCounter, 5423 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22562 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:07,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5441 Valid, 22562 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 20:01:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9850 states. [2022-07-13 20:01:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 7800. [2022-07-13 20:01:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7333 states have (on average 1.654711577798991) internal successors, (12134), 7352 states have internal predecessors, (12134), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-13 20:01:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12923 transitions. [2022-07-13 20:01:08,249 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12923 transitions. Word has length 168 [2022-07-13 20:01:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:08,250 INFO L495 AbstractCegarLoop]: Abstraction has 7800 states and 12923 transitions. [2022-07-13 20:01:08,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12923 transitions. [2022-07-13 20:01:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:08,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:08,254 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] [2022-07-13 20:01:08,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:01:08,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2022-07-13 20:01:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013663294] [2022-07-13 20:01:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:08,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:08,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013663294] [2022-07-13 20:01:08,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013663294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:08,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:08,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268130381] [2022-07-13 20:01:08,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:08,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:08,387 INFO L87 Difference]: Start difference. First operand 7800 states and 12923 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:11,738 INFO L93 Difference]: Finished difference Result 22588 states and 36687 transitions. [2022-07-13 20:01:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:11,856 INFO L225 Difference]: With dead ends: 22588 [2022-07-13 20:01:11,857 INFO L226 Difference]: Without dead ends: 16928 [2022-07-13 20:01:11,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:01:11,903 INFO L413 NwaCegarLoop]: 4897 mSDtfsCounter, 5422 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22556 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:11,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5440 Valid, 22556 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 20:01:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16928 states. [2022-07-13 20:01:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16928 to 13115. [2022-07-13 20:01:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6185330713817945) internal successors, (19772), 12251 states have internal predecessors, (19772), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-13 20:01:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21379 transitions. [2022-07-13 20:01:12,693 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21379 transitions. Word has length 168 [2022-07-13 20:01:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:12,695 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21379 transitions. [2022-07-13 20:01:12,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21379 transitions. [2022-07-13 20:01:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:12,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:12,703 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] [2022-07-13 20:01:12,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:01:12,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2022-07-13 20:01:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281346355] [2022-07-13 20:01:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:12,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:12,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281346355] [2022-07-13 20:01:12,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281346355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:12,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:12,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:12,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268160544] [2022-07-13 20:01:12,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:12,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:12,827 INFO L87 Difference]: Start difference. First operand 13115 states and 21379 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:14,760 INFO L93 Difference]: Finished difference Result 28108 states and 45760 transitions. [2022-07-13 20:01:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:01:14,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:14,850 INFO L225 Difference]: With dead ends: 28108 [2022-07-13 20:01:14,850 INFO L226 Difference]: Without dead ends: 17133 [2022-07-13 20:01:14,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:01:14,882 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5167 mSDsluCounter, 12587 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 17141 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:14,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 17141 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:01:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17133 states. [2022-07-13 20:01:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17133 to 13115. [2022-07-13 20:01:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6158316961362147) internal successors, (19739), 12251 states have internal predecessors, (19739), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-13 20:01:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21346 transitions. [2022-07-13 20:01:15,619 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21346 transitions. Word has length 168 [2022-07-13 20:01:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:15,619 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21346 transitions. [2022-07-13 20:01:15,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21346 transitions. [2022-07-13 20:01:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:15,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:15,631 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] [2022-07-13 20:01:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:01:15,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:15,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2022-07-13 20:01:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:15,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650349397] [2022-07-13 20:01:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:15,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:15,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650349397] [2022-07-13 20:01:15,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650349397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:15,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:15,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143093645] [2022-07-13 20:01:15,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:15,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:15,788 INFO L87 Difference]: Start difference. First operand 13115 states and 21346 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:19,959 INFO L93 Difference]: Finished difference Result 41980 states and 67733 transitions. [2022-07-13 20:01:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:19,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:20,043 INFO L225 Difference]: With dead ends: 41980 [2022-07-13 20:01:20,043 INFO L226 Difference]: Without dead ends: 31005 [2022-07-13 20:01:20,074 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 20:01:20,076 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5410 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 22542 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:20,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5428 Valid, 22542 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 20:01:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2022-07-13 20:01:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 23840. [2022-07-13 20:01:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23840 states, 22077 states have (on average 1.5910223309326448) internal successors, (35125), 22144 states have internal predecessors, (35125), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-13 20:01:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23840 states to 23840 states and 38530 transitions. [2022-07-13 20:01:21,612 INFO L78 Accepts]: Start accepts. Automaton has 23840 states and 38530 transitions. Word has length 168 [2022-07-13 20:01:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:21,613 INFO L495 AbstractCegarLoop]: Abstraction has 23840 states and 38530 transitions. [2022-07-13 20:01:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 23840 states and 38530 transitions. [2022-07-13 20:01:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:21,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:21,625 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] [2022-07-13 20:01:21,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:01:21,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2022-07-13 20:01:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:21,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261992882] [2022-07-13 20:01:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:21,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:21,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:21,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:21,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261992882] [2022-07-13 20:01:21,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261992882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:21,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:21,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772766537] [2022-07-13 20:01:21,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:21,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:21,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:21,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:21,766 INFO L87 Difference]: Start difference. First operand 23840 states and 38530 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:28,338 INFO L93 Difference]: Finished difference Result 80899 states and 130827 transitions. [2022-07-13 20:01:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:28,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:28,643 INFO L225 Difference]: With dead ends: 80899 [2022-07-13 20:01:28,643 INFO L226 Difference]: Without dead ends: 59199 [2022-07-13 20:01:28,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:01:28,696 INFO L413 NwaCegarLoop]: 4878 mSDtfsCounter, 5409 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22537 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:28,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22537 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:01:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59199 states. [2022-07-13 20:01:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59199 to 45349. [2022-07-13 20:01:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45349 states, 41858 states have (on average 1.5763533852549094) internal successors, (65983), 41989 states have internal predecessors, (65983), 2587 states have call successors, (2587), 775 states have call predecessors, (2587), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-13 20:01:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45349 states to 45349 states and 73470 transitions. [2022-07-13 20:01:31,791 INFO L78 Accepts]: Start accepts. Automaton has 45349 states and 73470 transitions. Word has length 168 [2022-07-13 20:01:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:31,791 INFO L495 AbstractCegarLoop]: Abstraction has 45349 states and 73470 transitions. [2022-07-13 20:01:31,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 45349 states and 73470 transitions. [2022-07-13 20:01:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:31,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:31,819 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] [2022-07-13 20:01:31,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:01:31,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1002879195, now seen corresponding path program 1 times [2022-07-13 20:01:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262486418] [2022-07-13 20:01:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:31,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:31,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262486418] [2022-07-13 20:01:31,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262486418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:31,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:31,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258478375] [2022-07-13 20:01:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:31,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:31,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:31,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:31,977 INFO L87 Difference]: Start difference. First operand 45349 states and 73470 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:42,970 INFO L93 Difference]: Finished difference Result 158734 states and 258857 transitions. [2022-07-13 20:01:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:01:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:43,400 INFO L225 Difference]: With dead ends: 158734 [2022-07-13 20:01:43,401 INFO L226 Difference]: Without dead ends: 115525 [2022-07-13 20:01:43,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:01:43,538 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22532 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:43,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22532 Invalid, 2931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2847 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:01:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115525 states. [2022-07-13 20:01:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115525 to 88494. [2022-07-13 20:01:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88494 states, 81547 states have (on average 1.5682857738482103) internal successors, (127889), 81806 states have internal predecessors, (127889), 5147 states have call successors, (5147), 1543 states have call predecessors, (5147), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-13 20:01:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88494 states to 88494 states and 144998 transitions. [2022-07-13 20:01:49,908 INFO L78 Accepts]: Start accepts. Automaton has 88494 states and 144998 transitions. Word has length 168 [2022-07-13 20:01:49,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:49,910 INFO L495 AbstractCegarLoop]: Abstraction has 88494 states and 144998 transitions. [2022-07-13 20:01:49,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 88494 states and 144998 transitions. [2022-07-13 20:01:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 20:01:50,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:50,155 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] [2022-07-13 20:01:50,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:01:50,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:50,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767897, now seen corresponding path program 1 times [2022-07-13 20:01:50,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055385515] [2022-07-13 20:01:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:01:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 20:01:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 20:01:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 20:01:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:50,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:50,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055385515] [2022-07-13 20:01:50,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055385515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:50,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:50,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525917159] [2022-07-13 20:01:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:50,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:50,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:50,334 INFO L87 Difference]: Start difference. First operand 88494 states and 144998 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:02:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:00,973 INFO L93 Difference]: Finished difference Result 203498 states and 339811 transitions. [2022-07-13 20:02:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:02:00,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-07-13 20:02:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:01,404 INFO L225 Difference]: With dead ends: 203498 [2022-07-13 20:02:01,404 INFO L226 Difference]: Without dead ends: 117144 [2022-07-13 20:02:01,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:02:01,815 INFO L413 NwaCegarLoop]: 4541 mSDtfsCounter, 5013 mSDsluCounter, 16735 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5032 SdHoareTripleChecker+Valid, 21276 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:01,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5032 Valid, 21276 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:02:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117144 states.