./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/pc_sfifo_1.cil-2+token_ring.15.cil.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 a9fe331e5302255756e033832e890b54b7bae1c0bb354f9ba1bbe18985f952e5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:31:18,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:31:18,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:31:18,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:31:18,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:31:18,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:31:18,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:31:18,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:31:18,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:31:18,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:31:18,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:31:18,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:31:18,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:31:18,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:31:18,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:31:18,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:31:18,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:31:18,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:31:18,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:31:18,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:31:18,746 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:31:18,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:31:18,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:31:18,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:31:18,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:31:18,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:31:18,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:31:18,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:31:18,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:31:18,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:31:18,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:31:18,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:31:18,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:31:18,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:31:18,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:31:18,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:31:18,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:31:18,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:31:18,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:31:18,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:31:18,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:31:18,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:31:18,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:31:18,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:31:18,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:31:18,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:31:18,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:31:18,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:31:18,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:31:18,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:31:18,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:31:18,794 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:31:18,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:31:18,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:31:18,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:31:18,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:31:18,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:31:18,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:31:18,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:31:18,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:31:18,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:31:18,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:31:18,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:31:18,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:31:18,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:31:18,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:31:18,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:31:18,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:31:18,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:31:18,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:31:18,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:31:18,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:31:18,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:31:18,799 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:31:18,799 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:31:18,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:31:18,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fe331e5302255756e033832e890b54b7bae1c0bb354f9ba1bbe18985f952e5 [2022-07-19 20:31:19,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:31:19,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:31:19,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:31:19,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:31:19,041 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:31:19,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2022-07-19 20:31:19,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08efc4dc8/3225812d98b640e1ae176489f413f2d5/FLAGc9479a692 [2022-07-19 20:31:19,476 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:31:19,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2022-07-19 20:31:19,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08efc4dc8/3225812d98b640e1ae176489f413f2d5/FLAGc9479a692 [2022-07-19 20:31:19,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08efc4dc8/3225812d98b640e1ae176489f413f2d5 [2022-07-19 20:31:19,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:31:19,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:31:19,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:31:19,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:31:19,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:31:19,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:31:19" (1/1) ... [2022-07-19 20:31:19,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf5954e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:19, skipping insertion in model container [2022-07-19 20:31:19,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:31:19" (1/1) ... [2022-07-19 20:31:19,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:31:19,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:31:20,078 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/pc_sfifo_1.cil-2+token_ring.15.cil.c[913,926] [2022-07-19 20:31:20,125 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/pc_sfifo_1.cil-2+token_ring.15.cil.c[5977,5990] [2022-07-19 20:31:20,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:31:20,231 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:31:20,242 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/pc_sfifo_1.cil-2+token_ring.15.cil.c[913,926] [2022-07-19 20:31:20,262 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/pc_sfifo_1.cil-2+token_ring.15.cil.c[5977,5990] [2022-07-19 20:31:20,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:31:20,308 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:31:20,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20 WrapperNode [2022-07-19 20:31:20,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:31:20,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:31:20,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:31:20,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:31:20,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,376 INFO L137 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1116 [2022-07-19 20:31:20,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:31:20,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:31:20,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:31:20,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:31:20,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:31:20,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:31:20,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:31:20,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:31:20,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (1/1) ... [2022-07-19 20:31:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:31:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:31:20,476 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) [2022-07-19 20:31:20,484 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 [2022-07-19 20:31:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:31:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:31:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:31:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-19 20:31:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-19 20:31:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:31:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:31:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:31:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:31:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:31:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:31:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:31:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:31:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:31:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:31:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:31:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:31:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:31:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:31:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:31:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:31:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:31:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-19 20:31:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-19 20:31:20,670 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:31:20,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:31:21,316 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:31:21,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:31:21,331 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-19 20:31:21,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:31:21 BoogieIcfgContainer [2022-07-19 20:31:21,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:31:21,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:31:21,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:31:21,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:31:21,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:31:19" (1/3) ... [2022-07-19 20:31:21,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39676583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:31:21, skipping insertion in model container [2022-07-19 20:31:21,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:31:20" (2/3) ... [2022-07-19 20:31:21,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39676583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:31:21, skipping insertion in model container [2022-07-19 20:31:21,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:31:21" (3/3) ... [2022-07-19 20:31:21,341 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.15.cil.c [2022-07-19 20:31:21,351 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:31:21,351 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:31:21,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:31:21,419 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@1b81fe4e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b9cad10 [2022-07-19 20:31:21,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:31:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 485 states, 437 states have (on average 1.654462242562929) internal successors, (723), 444 states have internal predecessors, (723), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-19 20:31:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 20:31:21,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:21,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:21,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1777034307, now seen corresponding path program 1 times [2022-07-19 20:31:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:21,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609692602] [2022-07-19 20:31:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 20:31:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:21,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609692602] [2022-07-19 20:31:21,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609692602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:21,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:21,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:31:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110536931] [2022-07-19 20:31:21,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:21,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:31:21,708 INFO L87 Difference]: Start difference. First operand has 485 states, 437 states have (on average 1.654462242562929) internal successors, (723), 444 states have internal predecessors, (723), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 20:31:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:22,301 INFO L93 Difference]: Finished difference Result 951 states and 1551 transitions. [2022-07-19 20:31:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:31:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-07-19 20:31:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:22,320 INFO L225 Difference]: With dead ends: 951 [2022-07-19 20:31:22,320 INFO L226 Difference]: Without dead ends: 483 [2022-07-19 20:31:22,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:22,331 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 407 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:22,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1443 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:31:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-19 20:31:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 474. [2022-07-19 20:31:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 429 states have (on average 1.5617715617715617) internal successors, (670), 433 states have internal predecessors, (670), 35 states have call successors, (35), 10 states have call predecessors, (35), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-19 20:31:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 736 transitions. [2022-07-19 20:31:22,403 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 736 transitions. Word has length 44 [2022-07-19 20:31:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:22,404 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 736 transitions. [2022-07-19 20:31:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 20:31:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 736 transitions. [2022-07-19 20:31:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 20:31:22,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:22,410 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] [2022-07-19 20:31:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:31:22,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash -672565823, now seen corresponding path program 1 times [2022-07-19 20:31:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:22,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954681180] [2022-07-19 20:31:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 20:31:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:22,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:22,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954681180] [2022-07-19 20:31:22,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954681180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:22,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:22,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:31:22,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490781971] [2022-07-19 20:31:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:22,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:22,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:22,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:31:22,507 INFO L87 Difference]: Start difference. First operand 474 states and 736 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 20:31:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:22,661 INFO L93 Difference]: Finished difference Result 606 states and 921 transitions. [2022-07-19 20:31:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:31:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-19 20:31:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:22,664 INFO L225 Difference]: With dead ends: 606 [2022-07-19 20:31:22,664 INFO L226 Difference]: Without dead ends: 544 [2022-07-19 20:31:22,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:22,665 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 1004 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:22,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1169 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:31:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-07-19 20:31:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2022-07-19 20:31:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 486 states have (on average 1.5349794238683128) internal successors, (746), 491 states have internal predecessors, (746), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 20:31:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 826 transitions. [2022-07-19 20:31:22,682 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 826 transitions. Word has length 44 [2022-07-19 20:31:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:22,682 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 826 transitions. [2022-07-19 20:31:22,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 20:31:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 826 transitions. [2022-07-19 20:31:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 20:31:22,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:22,684 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] [2022-07-19 20:31:22,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:31:22,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1398106659, now seen corresponding path program 1 times [2022-07-19 20:31:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:22,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72641657] [2022-07-19 20:31:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 20:31:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:22,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72641657] [2022-07-19 20:31:22,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72641657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:22,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:22,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:31:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477539155] [2022-07-19 20:31:22,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:31:22,731 INFO L87 Difference]: Start difference. First operand 538 states and 826 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 20:31:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:23,117 INFO L93 Difference]: Finished difference Result 786 states and 1166 transitions. [2022-07-19 20:31:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:31:23,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-19 20:31:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:23,121 INFO L225 Difference]: With dead ends: 786 [2022-07-19 20:31:23,121 INFO L226 Difference]: Without dead ends: 662 [2022-07-19 20:31:23,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:23,127 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 388 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:23,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1547 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:31:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-07-19 20:31:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 605. [2022-07-19 20:31:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 547 states have (on average 1.517367458866545) internal successors, (830), 552 states have internal predecessors, (830), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2022-07-19 20:31:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 916 transitions. [2022-07-19 20:31:23,151 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 916 transitions. Word has length 45 [2022-07-19 20:31:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:23,151 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 916 transitions. [2022-07-19 20:31:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 20:31:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 916 transitions. [2022-07-19 20:31:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 20:31:23,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:23,153 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] [2022-07-19 20:31:23,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:31:23,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1612503176, now seen corresponding path program 1 times [2022-07-19 20:31:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:23,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472550283] [2022-07-19 20:31:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 20:31:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:23,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:23,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472550283] [2022-07-19 20:31:23,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472550283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:23,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:23,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:31:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749495438] [2022-07-19 20:31:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:31:23,225 INFO L87 Difference]: Start difference. First operand 605 states and 916 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 20:31:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:23,358 INFO L93 Difference]: Finished difference Result 1013 states and 1475 transitions. [2022-07-19 20:31:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:31:23,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-19 20:31:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:23,362 INFO L225 Difference]: With dead ends: 1013 [2022-07-19 20:31:23,362 INFO L226 Difference]: Without dead ends: 822 [2022-07-19 20:31:23,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:23,363 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 1021 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:23,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1194 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:31:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-07-19 20:31:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 770. [2022-07-19 20:31:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 693 states have (on average 1.4718614718614718) internal successors, (1020), 701 states have internal predecessors, (1020), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2022-07-19 20:31:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1134 transitions. [2022-07-19 20:31:23,383 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1134 transitions. Word has length 45 [2022-07-19 20:31:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:23,383 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1134 transitions. [2022-07-19 20:31:23,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 20:31:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1134 transitions. [2022-07-19 20:31:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 20:31:23,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:23,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:23,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:31:23,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 900213873, now seen corresponding path program 1 times [2022-07-19 20:31:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899918205] [2022-07-19 20:31:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:31:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:31:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:31:23,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899918205] [2022-07-19 20:31:23,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899918205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:23,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:23,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:31:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879123235] [2022-07-19 20:31:23,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:23,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:31:23,438 INFO L87 Difference]: Start difference. First operand 770 states and 1134 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 20:31:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:23,791 INFO L93 Difference]: Finished difference Result 1114 states and 1595 transitions. [2022-07-19 20:31:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:31:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-19 20:31:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:23,795 INFO L225 Difference]: With dead ends: 1114 [2022-07-19 20:31:23,795 INFO L226 Difference]: Without dead ends: 877 [2022-07-19 20:31:23,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:23,796 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 372 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1600 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:31:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-19 20:31:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 839. [2022-07-19 20:31:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 753 states have (on average 1.447543160690571) internal successors, (1090), 762 states have internal predecessors, (1090), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2022-07-19 20:31:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1218 transitions. [2022-07-19 20:31:23,819 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1218 transitions. Word has length 62 [2022-07-19 20:31:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:23,819 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1218 transitions. [2022-07-19 20:31:23,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 20:31:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1218 transitions. [2022-07-19 20:31:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:31:23,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:23,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:31:23,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1329361574, now seen corresponding path program 1 times [2022-07-19 20:31:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:23,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835754770] [2022-07-19 20:31:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:23,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:31:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 20:31:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835754770] [2022-07-19 20:31:23,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835754770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:23,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:23,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:31:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196623477] [2022-07-19 20:31:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:31:23,871 INFO L87 Difference]: Start difference. First operand 839 states and 1218 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 20:31:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:24,025 INFO L93 Difference]: Finished difference Result 1390 states and 1940 transitions. [2022-07-19 20:31:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:31:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-19 20:31:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:24,040 INFO L225 Difference]: With dead ends: 1390 [2022-07-19 20:31:24,040 INFO L226 Difference]: Without dead ends: 1012 [2022-07-19 20:31:24,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:24,044 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1008 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:24,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1191 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:31:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-07-19 20:31:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 957. [2022-07-19 20:31:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 858 states have (on average 1.4172494172494172) internal successors, (1216), 868 states have internal predecessors, (1216), 65 states have call successors, (65), 30 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2022-07-19 20:31:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1362 transitions. [2022-07-19 20:31:24,093 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1362 transitions. Word has length 67 [2022-07-19 20:31:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:24,094 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1362 transitions. [2022-07-19 20:31:24,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 20:31:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1362 transitions. [2022-07-19 20:31:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 20:31:24,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:24,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:24,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:31:24,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1793949335, now seen corresponding path program 1 times [2022-07-19 20:31:24,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:24,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985327264] [2022-07-19 20:31:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:24,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:31:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:31:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 20:31:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985327264] [2022-07-19 20:31:24,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985327264] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:31:24,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806135937] [2022-07-19 20:31:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:24,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:24,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:31:24,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:31:24,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:31:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:31:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:31:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:31:24,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:31:24,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806135937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:24,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:31:24,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 20:31:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648230042] [2022-07-19 20:31:24,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:24,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:31:24,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:31:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:24,344 INFO L87 Difference]: Start difference. First operand 957 states and 1362 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 20:31:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:24,376 INFO L93 Difference]: Finished difference Result 1400 states and 1957 transitions. [2022-07-19 20:31:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:31:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-07-19 20:31:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:24,380 INFO L225 Difference]: With dead ends: 1400 [2022-07-19 20:31:24,380 INFO L226 Difference]: Without dead ends: 955 [2022-07-19 20:31:24,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:24,381 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 72 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:24,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1494 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:31:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-07-19 20:31:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 911. [2022-07-19 20:31:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 818 states have (on average 1.4107579462102688) internal successors, (1154), 828 states have internal predecessors, (1154), 61 states have call successors, (61), 28 states have call predecessors, (61), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2022-07-19 20:31:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1290 transitions. [2022-07-19 20:31:24,440 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1290 transitions. Word has length 68 [2022-07-19 20:31:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:24,440 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1290 transitions. [2022-07-19 20:31:24,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 20:31:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1290 transitions. [2022-07-19 20:31:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 20:31:24,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:24,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:24,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:31:24,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:24,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 386022440, now seen corresponding path program 1 times [2022-07-19 20:31:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:24,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000871387] [2022-07-19 20:31:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:24,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:31:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:31:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:31:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:24,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000871387] [2022-07-19 20:31:24,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000871387] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:31:24,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106995819] [2022-07-19 20:31:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:24,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:31:24,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:31:24,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:31:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:24,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 20:31:24,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:31:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:24,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:31:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 20:31:24,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106995819] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 20:31:24,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 20:31:24,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-19 20:31:24,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618365749] [2022-07-19 20:31:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:24,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:31:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:31:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:31:24,955 INFO L87 Difference]: Start difference. First operand 911 states and 1290 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 20:31:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:25,075 INFO L93 Difference]: Finished difference Result 962 states and 1351 transitions. [2022-07-19 20:31:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 20:31:25,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-19 20:31:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:25,080 INFO L225 Difference]: With dead ends: 962 [2022-07-19 20:31:25,080 INFO L226 Difference]: Without dead ends: 959 [2022-07-19 20:31:25,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:31:25,083 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1343 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:25,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 823 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:31:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-07-19 20:31:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 910. [2022-07-19 20:31:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 818 states have (on average 1.4083129584352079) internal successors, (1152), 827 states have internal predecessors, (1152), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2022-07-19 20:31:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1287 transitions. [2022-07-19 20:31:25,114 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1287 transitions. Word has length 68 [2022-07-19 20:31:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:25,115 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1287 transitions. [2022-07-19 20:31:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 20:31:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1287 transitions. [2022-07-19 20:31:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 20:31:25,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:25,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:25,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 20:31:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-19 20:31:25,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:25,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash -919689015, now seen corresponding path program 1 times [2022-07-19 20:31:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994625652] [2022-07-19 20:31:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:31:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:31:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:31:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:25,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994625652] [2022-07-19 20:31:25,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994625652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:31:25,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612446060] [2022-07-19 20:31:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:25,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:25,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:31:25,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:31:25,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:31:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:25,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:31:25,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:31:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:25,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:31:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 20:31:25,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612446060] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:31:25,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:31:25,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-19 20:31:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964123769] [2022-07-19 20:31:25,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:31:25,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 20:31:25,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 20:31:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:31:25,776 INFO L87 Difference]: Start difference. First operand 910 states and 1287 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-19 20:31:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:27,090 INFO L93 Difference]: Finished difference Result 2251 states and 3010 transitions. [2022-07-19 20:31:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-19 20:31:27,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-19 20:31:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:27,096 INFO L225 Difference]: With dead ends: 2251 [2022-07-19 20:31:27,096 INFO L226 Difference]: Without dead ends: 1855 [2022-07-19 20:31:27,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 20:31:27,099 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1361 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:27,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 3985 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:31:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2022-07-19 20:31:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1274. [2022-07-19 20:31:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1146 states have (on average 1.3551483420593369) internal successors, (1553), 1161 states have internal predecessors, (1553), 79 states have call successors, (79), 41 states have call predecessors, (79), 47 states have return successors, (106), 72 states have call predecessors, (106), 76 states have call successors, (106) [2022-07-19 20:31:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1738 transitions. [2022-07-19 20:31:27,150 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1738 transitions. Word has length 69 [2022-07-19 20:31:27,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:27,151 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 1738 transitions. [2022-07-19 20:31:27,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-19 20:31:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1738 transitions. [2022-07-19 20:31:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 20:31:27,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:27,155 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:27,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:31:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:27,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:27,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1261346069, now seen corresponding path program 1 times [2022-07-19 20:31:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:27,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913517006] [2022-07-19 20:31:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:31:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:31:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 20:31:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 20:31:27,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:27,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913517006] [2022-07-19 20:31:27,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913517006] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:31:27,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288981709] [2022-07-19 20:31:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:27,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:27,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:31:27,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:31:27,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 20:31:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:31:27,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:31:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 20:31:27,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:31:27,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288981709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:27,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:31:27,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 20:31:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814177327] [2022-07-19 20:31:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:31:27,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:31:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:27,572 INFO L87 Difference]: Start difference. First operand 1274 states and 1738 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 20:31:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:27,616 INFO L93 Difference]: Finished difference Result 1886 states and 2516 transitions. [2022-07-19 20:31:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:31:27,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-19 20:31:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:27,625 INFO L225 Difference]: With dead ends: 1886 [2022-07-19 20:31:27,625 INFO L226 Difference]: Without dead ends: 1214 [2022-07-19 20:31:27,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:27,628 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 695 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:27,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 837 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:31:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-07-19 20:31:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1208. [2022-07-19 20:31:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1087 states have (on average 1.3523459061637535) internal successors, (1470), 1102 states have internal predecessors, (1470), 76 states have call successors, (76), 38 states have call predecessors, (76), 43 states have return successors, (101), 68 states have call predecessors, (101), 73 states have call successors, (101) [2022-07-19 20:31:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1647 transitions. [2022-07-19 20:31:27,679 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1647 transitions. Word has length 88 [2022-07-19 20:31:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:27,680 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1647 transitions. [2022-07-19 20:31:27,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 20:31:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1647 transitions. [2022-07-19 20:31:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 20:31:27,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:27,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:27,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 20:31:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:27,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1632614229, now seen corresponding path program 1 times [2022-07-19 20:31:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:27,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029071556] [2022-07-19 20:31:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:27,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:31:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:31:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:31:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 20:31:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:31:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 20:31:27,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029071556] [2022-07-19 20:31:27,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029071556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:31:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16911886] [2022-07-19 20:31:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:27,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:31:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:31:27,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:31:27,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 20:31:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:31:28,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:31:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:31:28,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:31:28,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16911886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:28,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:31:28,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 20:31:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529776117] [2022-07-19 20:31:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:31:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:31:28,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:28,094 INFO L87 Difference]: Start difference. First operand 1208 states and 1647 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 20:31:28,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:28,126 INFO L93 Difference]: Finished difference Result 1518 states and 2028 transitions. [2022-07-19 20:31:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:31:28,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-19 20:31:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:28,128 INFO L225 Difference]: With dead ends: 1518 [2022-07-19 20:31:28,128 INFO L226 Difference]: Without dead ends: 408 [2022-07-19 20:31:28,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:28,130 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 60 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:28,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1488 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:31:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-19 20:31:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-07-19 20:31:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5833333333333333) internal successors, (589), 374 states have internal predecessors, (589), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-19 20:31:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 645 transitions. [2022-07-19 20:31:28,140 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 645 transitions. Word has length 103 [2022-07-19 20:31:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:28,140 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 645 transitions. [2022-07-19 20:31:28,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 20:31:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 645 transitions. [2022-07-19 20:31:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:28,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:28,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:28,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 20:31:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 20:31:28,356 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -985829240, now seen corresponding path program 1 times [2022-07-19 20:31:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:28,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854985761] [2022-07-19 20:31:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:28,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:28,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:28,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854985761] [2022-07-19 20:31:28,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854985761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:28,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:28,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:31:28,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355137979] [2022-07-19 20:31:28,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:28,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:31:28,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:28,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:31:28,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:28,499 INFO L87 Difference]: Start difference. First operand 408 states and 645 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-19 20:31:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:29,666 INFO L93 Difference]: Finished difference Result 960 states and 1541 transitions. [2022-07-19 20:31:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:31:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:29,671 INFO L225 Difference]: With dead ends: 960 [2022-07-19 20:31:29,671 INFO L226 Difference]: Without dead ends: 561 [2022-07-19 20:31:29,672 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 [2022-07-19 20:31:29,673 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1113 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:29,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1139 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:31:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-19 20:31:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2022-07-19 20:31:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 374 states have internal predecessors, (588), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-19 20:31:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 644 transitions. [2022-07-19 20:31:29,693 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 644 transitions. Word has length 190 [2022-07-19 20:31:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:29,693 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 644 transitions. [2022-07-19 20:31:29,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-19 20:31:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 644 transitions. [2022-07-19 20:31:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:29,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:29,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:29,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:31:29,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1458168886, now seen corresponding path program 1 times [2022-07-19 20:31:29,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:29,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5561988] [2022-07-19 20:31:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:29,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:29,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5561988] [2022-07-19 20:31:29,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5561988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:29,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:29,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:31:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105618967] [2022-07-19 20:31:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:29,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:31:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:31:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:31:29,790 INFO L87 Difference]: Start difference. First operand 408 states and 644 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-19 20:31:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:31,014 INFO L93 Difference]: Finished difference Result 952 states and 1524 transitions. [2022-07-19 20:31:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:31:31,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:31,017 INFO L225 Difference]: With dead ends: 952 [2022-07-19 20:31:31,017 INFO L226 Difference]: Without dead ends: 561 [2022-07-19 20:31:31,018 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 [2022-07-19 20:31:31,027 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1104 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:31,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1137 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:31:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-19 20:31:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2022-07-19 20:31:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5779569892473118) internal successors, (587), 374 states have internal predecessors, (587), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-19 20:31:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 643 transitions. [2022-07-19 20:31:31,045 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 643 transitions. Word has length 190 [2022-07-19 20:31:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:31,045 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 643 transitions. [2022-07-19 20:31:31,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-19 20:31:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 643 transitions. [2022-07-19 20:31:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:31,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:31,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:31,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:31:31,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash -89708276, now seen corresponding path program 1 times [2022-07-19 20:31:31,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:31,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311755092] [2022-07-19 20:31:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:31,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311755092] [2022-07-19 20:31:31,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311755092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:31,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:31,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:31:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067710623] [2022-07-19 20:31:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:31:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:31:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:31:31,162 INFO L87 Difference]: Start difference. First operand 408 states and 643 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-19 20:31:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:33,656 INFO L93 Difference]: Finished difference Result 1506 states and 2426 transitions. [2022-07-19 20:31:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:31:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:33,674 INFO L225 Difference]: With dead ends: 1506 [2022-07-19 20:31:33,675 INFO L226 Difference]: Without dead ends: 1120 [2022-07-19 20:31:33,676 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 [2022-07-19 20:31:33,677 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1679 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:33,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1962 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 20:31:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-07-19 20:31:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 813. [2022-07-19 20:31:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 748 states have (on average 1.5909090909090908) internal successors, (1190), 751 states have internal predecessors, (1190), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-19 20:31:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1293 transitions. [2022-07-19 20:31:33,721 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1293 transitions. Word has length 190 [2022-07-19 20:31:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:33,722 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1293 transitions. [2022-07-19 20:31:33,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-19 20:31:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1293 transitions. [2022-07-19 20:31:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:33,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:33,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:31:33,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1936734712, now seen corresponding path program 1 times [2022-07-19 20:31:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:33,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448605274] [2022-07-19 20:31:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:33,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:33,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448605274] [2022-07-19 20:31:33,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448605274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:33,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:33,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302059161] [2022-07-19 20:31:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:33,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:33,836 INFO L87 Difference]: Start difference. First operand 813 states and 1293 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:36,990 INFO L93 Difference]: Finished difference Result 2490 states and 4021 transitions. [2022-07-19 20:31:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:31:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:36,996 INFO L225 Difference]: With dead ends: 2490 [2022-07-19 20:31:36,996 INFO L226 Difference]: Without dead ends: 1699 [2022-07-19 20:31:36,998 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 [2022-07-19 20:31:36,998 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 1711 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:36,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 3143 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 20:31:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-07-19 20:31:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1189. [2022-07-19 20:31:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1095 states have (on average 1.5844748858447488) internal successors, (1735), 1099 states have internal predecessors, (1735), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-19 20:31:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1884 transitions. [2022-07-19 20:31:37,064 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1884 transitions. Word has length 190 [2022-07-19 20:31:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:37,065 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1884 transitions. [2022-07-19 20:31:37,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1884 transitions. [2022-07-19 20:31:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:37,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:37,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:37,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:31:37,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 434982154, now seen corresponding path program 1 times [2022-07-19 20:31:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107683868] [2022-07-19 20:31:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:37,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:37,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:37,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107683868] [2022-07-19 20:31:37,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107683868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:37,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:37,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:37,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227996113] [2022-07-19 20:31:37,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:37,215 INFO L87 Difference]: Start difference. First operand 1189 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:40,161 INFO L93 Difference]: Finished difference Result 3941 states and 6352 transitions. [2022-07-19 20:31:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:31:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:40,183 INFO L225 Difference]: With dead ends: 3941 [2022-07-19 20:31:40,184 INFO L226 Difference]: Without dead ends: 2774 [2022-07-19 20:31:40,187 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 [2022-07-19 20:31:40,187 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 1830 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:40,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 2158 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 20:31:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-07-19 20:31:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1942. [2022-07-19 20:31:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5787709497206703) internal successors, (2826), 1796 states have internal predecessors, (2826), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-19 20:31:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3071 transitions. [2022-07-19 20:31:40,307 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3071 transitions. Word has length 190 [2022-07-19 20:31:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:40,307 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3071 transitions. [2022-07-19 20:31:40,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3071 transitions. [2022-07-19 20:31:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:40,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:40,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:40,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:31:40,310 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1289626168, now seen corresponding path program 1 times [2022-07-19 20:31:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039627528] [2022-07-19 20:31:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:40,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:40,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039627528] [2022-07-19 20:31:40,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039627528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:40,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:40,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672040331] [2022-07-19 20:31:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:40,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:40,445 INFO L87 Difference]: Start difference. First operand 1942 states and 3071 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:41,875 INFO L93 Difference]: Finished difference Result 4682 states and 7530 transitions. [2022-07-19 20:31:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:31:41,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:41,887 INFO L225 Difference]: With dead ends: 4682 [2022-07-19 20:31:41,887 INFO L226 Difference]: Without dead ends: 2762 [2022-07-19 20:31:41,890 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 [2022-07-19 20:31:41,890 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1392 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:41,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1503 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:31:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-07-19 20:31:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1942. [2022-07-19 20:31:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5759776536312848) internal successors, (2821), 1796 states have internal predecessors, (2821), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-19 20:31:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3066 transitions. [2022-07-19 20:31:42,009 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3066 transitions. Word has length 190 [2022-07-19 20:31:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:42,009 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3066 transitions. [2022-07-19 20:31:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3066 transitions. [2022-07-19 20:31:42,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:42,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:42,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:31:42,011 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -791069366, now seen corresponding path program 1 times [2022-07-19 20:31:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054559875] [2022-07-19 20:31:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:42,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054559875] [2022-07-19 20:31:42,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054559875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:42,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:42,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695705367] [2022-07-19 20:31:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:42,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:42,152 INFO L87 Difference]: Start difference. First operand 1942 states and 3066 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:45,293 INFO L93 Difference]: Finished difference Result 6719 states and 10761 transitions. [2022-07-19 20:31:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:31:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:45,307 INFO L225 Difference]: With dead ends: 6719 [2022-07-19 20:31:45,307 INFO L226 Difference]: Without dead ends: 4799 [2022-07-19 20:31:45,311 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 [2022-07-19 20:31:45,311 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1697 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:45,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 3121 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:31:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-07-19 20:31:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3458. [2022-07-19 20:31:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3190 states have (on average 1.5717868338557994) internal successors, (5014), 3200 states have internal predecessors, (5014), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-19 20:31:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5457 transitions. [2022-07-19 20:31:45,578 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5457 transitions. Word has length 190 [2022-07-19 20:31:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:45,579 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 5457 transitions. [2022-07-19 20:31:45,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5457 transitions. [2022-07-19 20:31:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:45,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:45,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:31:45,581 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 612799820, now seen corresponding path program 1 times [2022-07-19 20:31:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:45,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098469228] [2022-07-19 20:31:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:45,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:45,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098469228] [2022-07-19 20:31:45,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098469228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:45,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:45,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:45,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366927846] [2022-07-19 20:31:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:45,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:45,703 INFO L87 Difference]: Start difference. First operand 3458 states and 5457 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:47,498 INFO L93 Difference]: Finished difference Result 8265 states and 13238 transitions. [2022-07-19 20:31:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:31:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:47,514 INFO L225 Difference]: With dead ends: 8265 [2022-07-19 20:31:47,515 INFO L226 Difference]: Without dead ends: 4829 [2022-07-19 20:31:47,521 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 [2022-07-19 20:31:47,521 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1210 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1706 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:31:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2022-07-19 20:31:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 3458. [2022-07-19 20:31:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3190 states have (on average 1.5689655172413792) internal successors, (5005), 3200 states have internal predecessors, (5005), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-19 20:31:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5448 transitions. [2022-07-19 20:31:47,773 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5448 transitions. Word has length 190 [2022-07-19 20:31:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:47,774 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 5448 transitions. [2022-07-19 20:31:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5448 transitions. [2022-07-19 20:31:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:47,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:47,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:47,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:31:47,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:47,777 INFO L85 PathProgramCache]: Analyzing trace with hash -173198070, now seen corresponding path program 1 times [2022-07-19 20:31:47,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:47,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350737933] [2022-07-19 20:31:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:47,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:47,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350737933] [2022-07-19 20:31:47,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350737933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:47,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:47,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:47,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351699581] [2022-07-19 20:31:47,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:47,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:47,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:47,891 INFO L87 Difference]: Start difference. First operand 3458 states and 5448 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:51,446 INFO L93 Difference]: Finished difference Result 12289 states and 19600 transitions. [2022-07-19 20:31:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:31:51,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:51,479 INFO L225 Difference]: With dead ends: 12289 [2022-07-19 20:31:51,479 INFO L226 Difference]: Without dead ends: 8853 [2022-07-19 20:31:51,486 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 [2022-07-19 20:31:51,486 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 1689 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:51,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 3110 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 20:31:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2022-07-19 20:31:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 6502. [2022-07-19 20:31:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6502 states, 6002 states have (on average 1.565311562812396) internal successors, (9395), 6020 states have internal predecessors, (9395), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-19 20:31:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 10252 transitions. [2022-07-19 20:31:51,999 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 10252 transitions. Word has length 190 [2022-07-19 20:31:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:51,999 INFO L495 AbstractCegarLoop]: Abstraction has 6502 states and 10252 transitions. [2022-07-19 20:31:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 10252 transitions. [2022-07-19 20:31:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:52,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:52,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:52,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:31:52,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 494183820, now seen corresponding path program 1 times [2022-07-19 20:31:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:52,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629654742] [2022-07-19 20:31:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629654742] [2022-07-19 20:31:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629654742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:52,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:52,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995667735] [2022-07-19 20:31:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:52,166 INFO L87 Difference]: Start difference. First operand 6502 states and 10252 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:54,387 INFO L93 Difference]: Finished difference Result 15437 states and 24681 transitions. [2022-07-19 20:31:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:31:54,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:54,412 INFO L225 Difference]: With dead ends: 15437 [2022-07-19 20:31:54,412 INFO L226 Difference]: Without dead ends: 8957 [2022-07-19 20:31:54,423 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 [2022-07-19 20:31:54,424 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 1209 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:54,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1699 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:31:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2022-07-19 20:31:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 6502. [2022-07-19 20:31:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6502 states, 6002 states have (on average 1.562479173608797) internal successors, (9378), 6020 states have internal predecessors, (9378), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-19 20:31:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 10235 transitions. [2022-07-19 20:31:54,961 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 10235 transitions. Word has length 190 [2022-07-19 20:31:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:54,961 INFO L495 AbstractCegarLoop]: Abstraction has 6502 states and 10235 transitions. [2022-07-19 20:31:54,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 10235 transitions. [2022-07-19 20:31:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:31:54,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:54,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:54,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:31:54,965 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1701045046, now seen corresponding path program 1 times [2022-07-19 20:31:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746615261] [2022-07-19 20:31:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:31:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:31:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:31:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:31:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:55,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:55,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746615261] [2022-07-19 20:31:55,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746615261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:55,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:55,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637243870] [2022-07-19 20:31:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:55,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:55,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:55,114 INFO L87 Difference]: Start difference. First operand 6502 states and 10235 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:31:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:59,600 INFO L93 Difference]: Finished difference Result 23429 states and 37294 transitions. [2022-07-19 20:31:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:31:59,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:31:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:59,645 INFO L225 Difference]: With dead ends: 23429 [2022-07-19 20:31:59,645 INFO L226 Difference]: Without dead ends: 16949 [2022-07-19 20:31:59,662 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 [2022-07-19 20:31:59,663 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 1681 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:59,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 3099 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3278 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:31:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16949 states. [2022-07-19 20:32:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16949 to 12620. [2022-07-19 20:32:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12620 states, 11656 states have (on average 1.5595401509951956) internal successors, (18178), 11690 states have internal predecessors, (18178), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-19 20:32:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12620 states to 12620 states and 19917 transitions. [2022-07-19 20:32:00,807 INFO L78 Accepts]: Start accepts. Automaton has 12620 states and 19917 transitions. Word has length 190 [2022-07-19 20:32:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:00,807 INFO L495 AbstractCegarLoop]: Abstraction has 12620 states and 19917 transitions. [2022-07-19 20:32:00,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 12620 states and 19917 transitions. [2022-07-19 20:32:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:32:00,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:00,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:00,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:32:00,814 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1356216884, now seen corresponding path program 1 times [2022-07-19 20:32:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:00,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797166547] [2022-07-19 20:32:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:32:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:32:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:32:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:32:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:00,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797166547] [2022-07-19 20:32:00,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797166547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:00,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:00,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:00,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490711083] [2022-07-19 20:32:00,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:00,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:00,945 INFO L87 Difference]: Start difference. First operand 12620 states and 19917 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:03,901 INFO L93 Difference]: Finished difference Result 29781 states and 47652 transitions. [2022-07-19 20:32:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:32:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:03,950 INFO L225 Difference]: With dead ends: 29781 [2022-07-19 20:32:03,951 INFO L226 Difference]: Without dead ends: 17183 [2022-07-19 20:32:03,980 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 [2022-07-19 20:32:03,981 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 1457 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:03,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1444 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:32:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17183 states. [2022-07-19 20:32:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17183 to 12620. [2022-07-19 20:32:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12620 states, 11656 states have (on average 1.5567089910775567) internal successors, (18145), 11690 states have internal predecessors, (18145), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-19 20:32:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12620 states to 12620 states and 19884 transitions. [2022-07-19 20:32:05,157 INFO L78 Accepts]: Start accepts. Automaton has 12620 states and 19884 transitions. Word has length 190 [2022-07-19 20:32:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:05,157 INFO L495 AbstractCegarLoop]: Abstraction has 12620 states and 19884 transitions. [2022-07-19 20:32:05,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12620 states and 19884 transitions. [2022-07-19 20:32:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:32:05,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:05,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:05,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:32:05,163 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:05,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:05,164 INFO L85 PathProgramCache]: Analyzing trace with hash -375262070, now seen corresponding path program 1 times [2022-07-19 20:32:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:05,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451054094] [2022-07-19 20:32:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:32:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:32:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:32:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:05,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:32:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:05,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451054094] [2022-07-19 20:32:05,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451054094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:05,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:05,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645880631] [2022-07-19 20:32:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:05,301 INFO L87 Difference]: Start difference. First operand 12620 states and 19884 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:08,716 INFO L93 Difference]: Finished difference Result 29747 states and 47485 transitions. [2022-07-19 20:32:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:32:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:08,770 INFO L225 Difference]: With dead ends: 29747 [2022-07-19 20:32:08,771 INFO L226 Difference]: Without dead ends: 17149 [2022-07-19 20:32:08,794 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 [2022-07-19 20:32:08,795 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1208 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:08,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1686 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:32:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17149 states. [2022-07-19 20:32:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17149 to 12620. [2022-07-19 20:32:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12620 states, 11656 states have (on average 1.5538778311599177) internal successors, (18112), 11690 states have internal predecessors, (18112), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-19 20:32:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12620 states to 12620 states and 19851 transitions. [2022-07-19 20:32:10,029 INFO L78 Accepts]: Start accepts. Automaton has 12620 states and 19851 transitions. Word has length 190 [2022-07-19 20:32:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:10,029 INFO L495 AbstractCegarLoop]: Abstraction has 12620 states and 19851 transitions. [2022-07-19 20:32:10,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 12620 states and 19851 transitions. [2022-07-19 20:32:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:32:10,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:10,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:10,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:32:10,037 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2144733684, now seen corresponding path program 1 times [2022-07-19 20:32:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:10,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025563377] [2022-07-19 20:32:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:10,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:32:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:32:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:32:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:32:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:10,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025563377] [2022-07-19 20:32:10,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025563377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:10,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:10,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:10,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098366170] [2022-07-19 20:32:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:10,179 INFO L87 Difference]: Start difference. First operand 12620 states and 19851 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:16,925 INFO L93 Difference]: Finished difference Result 45643 states and 72486 transitions. [2022-07-19 20:32:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:16,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:32:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:17,014 INFO L225 Difference]: With dead ends: 45643 [2022-07-19 20:32:17,014 INFO L226 Difference]: Without dead ends: 33045 [2022-07-19 20:32:17,044 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 [2022-07-19 20:32:17,045 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 1665 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3219 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:17,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 3076 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3219 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:32:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33045 states. [2022-07-19 20:32:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33045 to 24984. [2022-07-19 20:32:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24984 states, 23092 states have (on average 1.5513597782781916) internal successors, (35824), 23158 states have internal predecessors, (35824), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-19 20:32:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24984 states to 24984 states and 39489 transitions. [2022-07-19 20:32:19,410 INFO L78 Accepts]: Start accepts. Automaton has 24984 states and 39489 transitions. Word has length 190 [2022-07-19 20:32:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:19,410 INFO L495 AbstractCegarLoop]: Abstraction has 24984 states and 39489 transitions. [2022-07-19 20:32:19,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 24984 states and 39489 transitions. [2022-07-19 20:32:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:32:19,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:19,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 20:32:19,421 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 745041934, now seen corresponding path program 1 times [2022-07-19 20:32:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251296596] [2022-07-19 20:32:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:32:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:32:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:32:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:32:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:19,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:19,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251296596] [2022-07-19 20:32:19,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251296596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:19,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:19,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957035291] [2022-07-19 20:32:19,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:19,547 INFO L87 Difference]: Start difference. First operand 24984 states and 39489 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:25,107 INFO L93 Difference]: Finished difference Result 58405 states and 93568 transitions. [2022-07-19 20:32:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:32:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:25,194 INFO L225 Difference]: With dead ends: 58405 [2022-07-19 20:32:25,194 INFO L226 Difference]: Without dead ends: 33443 [2022-07-19 20:32:25,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:25,237 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1204 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:25,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1675 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:32:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33443 states. [2022-07-19 20:32:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33443 to 24984. [2022-07-19 20:32:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24984 states, 23092 states have (on average 1.5485449506322535) internal successors, (35759), 23158 states have internal predecessors, (35759), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-19 20:32:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24984 states to 24984 states and 39424 transitions. [2022-07-19 20:32:27,816 INFO L78 Accepts]: Start accepts. Automaton has 24984 states and 39424 transitions. Word has length 190 [2022-07-19 20:32:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:27,816 INFO L495 AbstractCegarLoop]: Abstraction has 24984 states and 39424 transitions. [2022-07-19 20:32:27,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 24984 states and 39424 transitions. [2022-07-19 20:32:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:32:27,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:27,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 20:32:27,826 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1655591476, now seen corresponding path program 1 times [2022-07-19 20:32:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:27,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689219733] [2022-07-19 20:32:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:27,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:32:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:32:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:32:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:32:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:27,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689219733] [2022-07-19 20:32:27,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689219733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:27,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:27,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632788148] [2022-07-19 20:32:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:27,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:27,933 INFO L87 Difference]: Start difference. First operand 24984 states and 39424 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:43,050 INFO L93 Difference]: Finished difference Result 101667 states and 161428 transitions. [2022-07-19 20:32:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:32:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:32:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:43,251 INFO L225 Difference]: With dead ends: 101667 [2022-07-19 20:32:43,251 INFO L226 Difference]: Without dead ends: 76705 [2022-07-19 20:32:43,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:43,315 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 1779 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 3871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:43,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 3255 Invalid, 3871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 20:32:43,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76705 states. [2022-07-19 20:32:48,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76705 to 49130. [2022-07-19 20:32:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49130 states, 45446 states have (on average 1.5456365796769793) internal successors, (70243), 45576 states have internal predecessors, (70243), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 902 states have return successors, (5094), 2906 states have call predecessors, (5094), 2779 states have call successors, (5094) [2022-07-19 20:32:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49130 states to 49130 states and 78118 transitions. [2022-07-19 20:32:49,091 INFO L78 Accepts]: Start accepts. Automaton has 49130 states and 78118 transitions. Word has length 190 [2022-07-19 20:32:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:49,091 INFO L495 AbstractCegarLoop]: Abstraction has 49130 states and 78118 transitions. [2022-07-19 20:32:49,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:32:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 49130 states and 78118 transitions. [2022-07-19 20:32:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:32:49,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:49,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 20:32:49,193 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash -209010610, now seen corresponding path program 1 times [2022-07-19 20:32:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:49,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454370500] [2022-07-19 20:32:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:32:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:32:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:32:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:32:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:49,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:49,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454370500] [2022-07-19 20:32:49,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454370500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:49,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:49,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:49,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670784942] [2022-07-19 20:32:49,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:49,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:49,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:49,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:49,326 INFO L87 Difference]: Start difference. First operand 49130 states and 78118 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:33:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:16,648 INFO L93 Difference]: Finished difference Result 198611 states and 317804 transitions. [2022-07-19 20:33:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:33:16,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:33:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:17,091 INFO L225 Difference]: With dead ends: 198611 [2022-07-19 20:33:17,091 INFO L226 Difference]: Without dead ends: 149503 [2022-07-19 20:33:17,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:17,436 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2103 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:17,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 3050 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:33:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149503 states. [2022-07-19 20:33:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149503 to 97867. [2022-07-19 20:33:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97867 states, 90663 states have (on average 1.5460000220597157) internal successors, (140165), 90921 states have internal predecessors, (140165), 5405 states have call successors, (5405), 1543 states have call predecessors, (5405), 1798 states have return successors, (12220), 5658 states have call predecessors, (12220), 5403 states have call successors, (12220) [2022-07-19 20:33:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97867 states to 97867 states and 157790 transitions. [2022-07-19 20:33:29,078 INFO L78 Accepts]: Start accepts. Automaton has 97867 states and 157790 transitions. Word has length 190 [2022-07-19 20:33:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:29,078 INFO L495 AbstractCegarLoop]: Abstraction has 97867 states and 157790 transitions. [2022-07-19 20:33:29,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:33:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 97867 states and 157790 transitions. [2022-07-19 20:33:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:33:29,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:29,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 20:33:29,105 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1132178036, now seen corresponding path program 1 times [2022-07-19 20:33:29,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:29,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570955154] [2022-07-19 20:33:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:33:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:33:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:33:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:33:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570955154] [2022-07-19 20:33:29,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570955154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:29,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:29,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267443664] [2022-07-19 20:33:29,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:29,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:29,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:29,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:29,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:29,209 INFO L87 Difference]: Start difference. First operand 97867 states and 157790 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:33:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:50,100 INFO L93 Difference]: Finished difference Result 227077 states and 372853 transitions. [2022-07-19 20:33:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:33:50,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:33:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:50,570 INFO L225 Difference]: With dead ends: 227077 [2022-07-19 20:33:50,570 INFO L226 Difference]: Without dead ends: 129232 [2022-07-19 20:33:50,790 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 [2022-07-19 20:33:50,791 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1204 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:50,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1665 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:33:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129232 states. [2022-07-19 20:34:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129232 to 97867. [2022-07-19 20:34:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97867 states, 90663 states have (on average 1.5431653485986565) internal successors, (139908), 90921 states have internal predecessors, (139908), 5405 states have call successors, (5405), 1543 states have call predecessors, (5405), 1798 states have return successors, (12220), 5658 states have call predecessors, (12220), 5403 states have call successors, (12220) [2022-07-19 20:34:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97867 states to 97867 states and 157533 transitions. [2022-07-19 20:34:03,013 INFO L78 Accepts]: Start accepts. Automaton has 97867 states and 157533 transitions. Word has length 190 [2022-07-19 20:34:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:03,013 INFO L495 AbstractCegarLoop]: Abstraction has 97867 states and 157533 transitions. [2022-07-19 20:34:03,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:34:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 97867 states and 157533 transitions. [2022-07-19 20:34:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 20:34:03,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:03,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 20:34:03,041 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash -746315634, now seen corresponding path program 1 times [2022-07-19 20:34:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:03,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502089857] [2022-07-19 20:34:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:34:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 20:34:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 20:34:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 20:34:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:03,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:03,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502089857] [2022-07-19 20:34:03,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502089857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:03,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:03,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204965933] [2022-07-19 20:34:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:03,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:03,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:03,195 INFO L87 Difference]: Start difference. First operand 97867 states and 157533 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-19 20:34:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:58,492 INFO L93 Difference]: Finished difference Result 387696 states and 628250 transitions. [2022-07-19 20:34:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:34:58,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-19 20:34:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:59,715 INFO L225 Difference]: With dead ends: 387696 [2022-07-19 20:34:59,715 INFO L226 Difference]: Without dead ends: 289851 [2022-07-19 20:34:59,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:59,979 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 2111 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:59,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 2097 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 20:35:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289851 states.