./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --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/recursive-with-pointer/system-with-recursion.i -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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:34:14,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:34:14,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:34:14,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:34:14,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:34:14,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:34:14,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:34:14,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:34:14,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:34:15,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:34:15,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:34:15,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:34:15,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:34:15,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:34:15,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:34:15,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:34:15,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:34:15,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:34:15,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:34:15,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:34:15,024 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:34:15,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:34:15,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:34:15,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:34:15,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:34:15,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:34:15,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:34:15,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:34:15,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:34:15,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:34:15,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:34:15,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:34:15,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:34:15,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:34:15,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:34:15,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:34:15,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:34:15,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:34:15,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:34:15,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:34:15,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:34:15,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:34:15,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:34:15,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:34:15,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:34:15,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:34:15,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:34:15,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:34:15,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:34:15,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:34:15,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:34:15,082 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:34:15,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:34:15,083 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:34:15,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:34:15,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:34:15,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:34:15,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:34:15,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:34:15,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:34:15,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:34:15,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:34:15,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:34:15,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:34:15,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:34:15,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:34:15,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:34:15,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:34:15,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:34:15,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:34:15,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:34:15,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:34:15,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:34:15,088 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:34:15,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:34:15,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:34:15,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2022-07-19 17:34:15,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:34:15,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:34:15,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:34:15,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:34:15,351 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:34:15,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-19 17:34:15,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe519b66/6c30d221a86f461394246b78780da113/FLAG88380e62f [2022-07-19 17:34:15,860 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:34:15,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-19 17:34:15,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe519b66/6c30d221a86f461394246b78780da113/FLAG88380e62f [2022-07-19 17:34:15,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe519b66/6c30d221a86f461394246b78780da113 [2022-07-19 17:34:15,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:34:15,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:34:15,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:34:15,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:34:15,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:34:15,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:34:15" (1/1) ... [2022-07-19 17:34:15,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff337c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:15, skipping insertion in model container [2022-07-19 17:34:15,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:34:15" (1/1) ... [2022-07-19 17:34:15,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:34:15,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:34:16,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-19 17:34:16,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:34:16,384 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:34:16,455 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/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-19 17:34:16,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:34:16,502 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:34:16,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16 WrapperNode [2022-07-19 17:34:16,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:34:16,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:34:16,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:34:16,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:34:16,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,582 INFO L137 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2022-07-19 17:34:16,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:34:16,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:34:16,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:34:16,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:34:16,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:34:16,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:34:16,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:34:16,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:34:16,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (1/1) ... [2022-07-19 17:34:16,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:34:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:34:16,676 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 17:34:16,695 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 17:34:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 17:34:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-19 17:34:16,719 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-19 17:34:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-07-19 17:34:16,720 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-07-19 17:34:16,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-07-19 17:34:16,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-07-19 17:34:16,720 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-07-19 17:34:16,720 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-07-19 17:34:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-07-19 17:34:16,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-07-19 17:34:16,721 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-07-19 17:34:16,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-19 17:34:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:34:16,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:34:16,847 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:34:16,848 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:34:17,395 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:34:17,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:34:17,402 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 17:34:17,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:34:17 BoogieIcfgContainer [2022-07-19 17:34:17,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:34:17,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:34:17,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:34:17,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:34:17,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:34:15" (1/3) ... [2022-07-19 17:34:17,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e92d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:34:17, skipping insertion in model container [2022-07-19 17:34:17,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:34:16" (2/3) ... [2022-07-19 17:34:17,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e92d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:34:17, skipping insertion in model container [2022-07-19 17:34:17,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:34:17" (3/3) ... [2022-07-19 17:34:17,411 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-07-19 17:34:17,423 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:34:17,423 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:34:17,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:34:17,478 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@2df55e81, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@396271db [2022-07-19 17:34:17,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:34:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-19 17:34:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 17:34:17,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:17,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:17,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:17,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -965536278, now seen corresponding path program 1 times [2022-07-19 17:34:17,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963411676] [2022-07-19 17:34:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:17,973 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 17:34:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963411676] [2022-07-19 17:34:17,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963411676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:17,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:17,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:34:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089449354] [2022-07-19 17:34:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:34:18,020 INFO L87 Difference]: Start difference. First operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 17:34:19,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:19,160 INFO L93 Difference]: Finished difference Result 319 states and 468 transitions. [2022-07-19 17:34:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:34:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-19 17:34:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:19,183 INFO L225 Difference]: With dead ends: 319 [2022-07-19 17:34:19,183 INFO L226 Difference]: Without dead ends: 169 [2022-07-19 17:34:19,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:34:19,198 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 144 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:19,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 930 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:34:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-19 17:34:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 133. [2022-07-19 17:34:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 96 states have internal predecessors, (123), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 17:34:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-07-19 17:34:19,263 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 19 [2022-07-19 17:34:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:19,264 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-07-19 17:34:19,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 17:34:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-07-19 17:34:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 17:34:19,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:19,268 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:19,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:34:19,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1463372220, now seen corresponding path program 1 times [2022-07-19 17:34:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:19,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421992821] [2022-07-19 17:34:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:19,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:19,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:19,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421992821] [2022-07-19 17:34:19,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421992821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:19,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:19,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:34:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920066587] [2022-07-19 17:34:19,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:19,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:34:19,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:34:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:34:19,493 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:34:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:19,983 INFO L93 Difference]: Finished difference Result 293 states and 423 transitions. [2022-07-19 17:34:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:34:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-07-19 17:34:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:19,986 INFO L225 Difference]: With dead ends: 293 [2022-07-19 17:34:19,986 INFO L226 Difference]: Without dead ends: 175 [2022-07-19 17:34:19,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:19,988 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 160 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:19,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 495 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:34:19,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-19 17:34:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2022-07-19 17:34:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 100 states have internal predecessors, (129), 30 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 17:34:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2022-07-19 17:34:20,003 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 35 [2022-07-19 17:34:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:20,004 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2022-07-19 17:34:20,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:34:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2022-07-19 17:34:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 17:34:20,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:20,007 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:34:20,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1541012852, now seen corresponding path program 1 times [2022-07-19 17:34:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:20,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265173209] [2022-07-19 17:34:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:20,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265173209] [2022-07-19 17:34:20,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265173209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:20,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:20,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335278876] [2022-07-19 17:34:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:20,157 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:34:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:21,288 INFO L93 Difference]: Finished difference Result 339 states and 497 transitions. [2022-07-19 17:34:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:34:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-19 17:34:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:21,294 INFO L225 Difference]: With dead ends: 339 [2022-07-19 17:34:21,294 INFO L226 Difference]: Without dead ends: 216 [2022-07-19 17:34:21,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:21,298 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 148 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:21,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1100 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:34:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-19 17:34:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 208. [2022-07-19 17:34:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 152 states have internal predecessors, (188), 40 states have call successors, (40), 13 states have call predecessors, (40), 20 states have return successors, (63), 42 states have call predecessors, (63), 36 states have call successors, (63) [2022-07-19 17:34:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-19 17:34:21,330 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 36 [2022-07-19 17:34:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:21,330 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-19 17:34:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:34:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-19 17:34:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 17:34:21,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:21,333 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:21,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:34:21,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1282847414, now seen corresponding path program 1 times [2022-07-19 17:34:21,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:21,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003658079] [2022-07-19 17:34:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:21,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003658079] [2022-07-19 17:34:21,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003658079] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:34:21,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938895794] [2022-07-19 17:34:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:21,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:21,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:34:21,641 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 17:34:21,643 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 17:34:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:21,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-19 17:34:21,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:34:21,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:34:21,949 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-19 17:34:21,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-19 17:34:22,003 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 17:34:22,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-07-19 17:34:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:22,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:34:22,888 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-07-19 17:34:24,799 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-07-19 17:34:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:26,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938895794] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 17:34:26,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 17:34:26,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 11] total 26 [2022-07-19 17:34:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575028968] [2022-07-19 17:34:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:26,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=453, Unknown=3, NotChecked=90, Total=650 [2022-07-19 17:34:26,878 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:34:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:32,536 INFO L93 Difference]: Finished difference Result 439 states and 658 transitions. [2022-07-19 17:34:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:34:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-19 17:34:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:32,539 INFO L225 Difference]: With dead ends: 439 [2022-07-19 17:34:32,540 INFO L226 Difference]: Without dead ends: 246 [2022-07-19 17:34:32,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=125, Invalid=635, Unknown=4, NotChecked=106, Total=870 [2022-07-19 17:34:32,542 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 35 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:32,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1029 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 185 Unchecked, 0.1s Time] [2022-07-19 17:34:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-19 17:34:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2022-07-19 17:34:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 172 states have internal predecessors, (216), 45 states have call successors, (45), 15 states have call predecessors, (45), 22 states have return successors, (83), 49 states have call predecessors, (83), 41 states have call successors, (83) [2022-07-19 17:34:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 344 transitions. [2022-07-19 17:34:32,576 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 344 transitions. Word has length 36 [2022-07-19 17:34:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:32,576 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 344 transitions. [2022-07-19 17:34:32,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:34:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 344 transitions. [2022-07-19 17:34:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 17:34:32,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:32,578 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:32,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 17:34:32,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:32,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2015047529, now seen corresponding path program 1 times [2022-07-19 17:34:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:32,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463138119] [2022-07-19 17:34:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:32,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:32,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:32,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463138119] [2022-07-19 17:34:32,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463138119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:32,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:32,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:32,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562314297] [2022-07-19 17:34:32,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:32,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:32,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:32,980 INFO L87 Difference]: Start difference. First operand 237 states and 344 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:34,633 INFO L93 Difference]: Finished difference Result 624 states and 972 transitions. [2022-07-19 17:34:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 17:34:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-07-19 17:34:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:34,637 INFO L225 Difference]: With dead ends: 624 [2022-07-19 17:34:34,637 INFO L226 Difference]: Without dead ends: 400 [2022-07-19 17:34:34,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2022-07-19 17:34:34,639 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 292 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:34,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1088 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:34:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-19 17:34:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 367. [2022-07-19 17:34:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 265 states have (on average 1.260377358490566) internal successors, (334), 264 states have internal predecessors, (334), 60 states have call successors, (60), 22 states have call predecessors, (60), 41 states have return successors, (155), 80 states have call predecessors, (155), 56 states have call successors, (155) [2022-07-19 17:34:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 549 transitions. [2022-07-19 17:34:34,666 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 549 transitions. Word has length 36 [2022-07-19 17:34:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:34,666 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 549 transitions. [2022-07-19 17:34:34,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 549 transitions. [2022-07-19 17:34:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 17:34:34,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:34,668 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:34,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:34:34,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:34,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2005278688, now seen corresponding path program 1 times [2022-07-19 17:34:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:34,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629935994] [2022-07-19 17:34:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:34,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:34:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:34:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629935994] [2022-07-19 17:34:34,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629935994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:34,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:34,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:34:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283570599] [2022-07-19 17:34:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:34,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:34:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:34:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:34:34,822 INFO L87 Difference]: Start difference. First operand 367 states and 549 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:35,544 INFO L93 Difference]: Finished difference Result 743 states and 1107 transitions. [2022-07-19 17:34:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:34:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-19 17:34:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:35,547 INFO L225 Difference]: With dead ends: 743 [2022-07-19 17:34:35,547 INFO L226 Difference]: Without dead ends: 386 [2022-07-19 17:34:35,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:34:35,550 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 108 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:35,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 804 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-19 17:34:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 370. [2022-07-19 17:34:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 268 states have (on average 1.257462686567164) internal successors, (337), 266 states have internal predecessors, (337), 60 states have call successors, (60), 23 states have call predecessors, (60), 41 states have return successors, (155), 80 states have call predecessors, (155), 56 states have call successors, (155) [2022-07-19 17:34:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 552 transitions. [2022-07-19 17:34:35,574 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 552 transitions. Word has length 38 [2022-07-19 17:34:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:35,574 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 552 transitions. [2022-07-19 17:34:35,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 552 transitions. [2022-07-19 17:34:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 17:34:35,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:35,576 INFO L195 NwaCegarLoop]: trace histogram [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 17:34:35,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:34:35,576 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash -773790690, now seen corresponding path program 1 times [2022-07-19 17:34:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:35,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875531759] [2022-07-19 17:34:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:34:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:35,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:35,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875531759] [2022-07-19 17:34:35,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875531759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:35,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:35,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110930224] [2022-07-19 17:34:35,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:35,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:35,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:35,734 INFO L87 Difference]: Start difference. First operand 370 states and 552 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:36,584 INFO L93 Difference]: Finished difference Result 762 states and 1129 transitions. [2022-07-19 17:34:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:34:36,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-19 17:34:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:36,588 INFO L225 Difference]: With dead ends: 762 [2022-07-19 17:34:36,589 INFO L226 Difference]: Without dead ends: 390 [2022-07-19 17:34:36,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:36,591 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 228 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:36,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 979 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:34:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-19 17:34:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2022-07-19 17:34:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 271 states have (on average 1.2546125461254614) internal successors, (340), 269 states have internal predecessors, (340), 62 states have call successors, (62), 24 states have call predecessors, (62), 41 states have return successors, (156), 81 states have call predecessors, (156), 57 states have call successors, (156) [2022-07-19 17:34:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 558 transitions. [2022-07-19 17:34:36,614 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 558 transitions. Word has length 38 [2022-07-19 17:34:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:36,615 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 558 transitions. [2022-07-19 17:34:36,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 558 transitions. [2022-07-19 17:34:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 17:34:36,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:36,619 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:36,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:34:36,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1418952031, now seen corresponding path program 1 times [2022-07-19 17:34:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:36,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978841660] [2022-07-19 17:34:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:36,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:34:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:34:36,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:36,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978841660] [2022-07-19 17:34:36,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978841660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:36,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:36,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130779790] [2022-07-19 17:34:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:36,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:36,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:36,797 INFO L87 Difference]: Start difference. First operand 375 states and 558 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:37,535 INFO L93 Difference]: Finished difference Result 754 states and 1117 transitions. [2022-07-19 17:34:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:34:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-07-19 17:34:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:37,539 INFO L225 Difference]: With dead ends: 754 [2022-07-19 17:34:37,539 INFO L226 Difference]: Without dead ends: 385 [2022-07-19 17:34:37,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:37,541 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 354 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:37,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 618 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:34:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-19 17:34:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 367. [2022-07-19 17:34:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 266 states have (on average 1.2518796992481203) internal successors, (333), 262 states have internal predecessors, (333), 59 states have call successors, (59), 24 states have call predecessors, (59), 41 states have return successors, (156), 80 states have call predecessors, (156), 57 states have call successors, (156) [2022-07-19 17:34:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 548 transitions. [2022-07-19 17:34:37,565 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 548 transitions. Word has length 39 [2022-07-19 17:34:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:37,566 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 548 transitions. [2022-07-19 17:34:37,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:34:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 548 transitions. [2022-07-19 17:34:37,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 17:34:37,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:37,569 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:34:37,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:34:37,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1936715933, now seen corresponding path program 1 times [2022-07-19 17:34:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:37,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874007861] [2022-07-19 17:34:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:37,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:34:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:34:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:37,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874007861] [2022-07-19 17:34:37,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874007861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:37,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:37,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:34:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546851614] [2022-07-19 17:34:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:34:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:37,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:34:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:34:37,693 INFO L87 Difference]: Start difference. First operand 367 states and 548 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:38,112 INFO L93 Difference]: Finished difference Result 744 states and 1229 transitions. [2022-07-19 17:34:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:34:38,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2022-07-19 17:34:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:38,116 INFO L225 Difference]: With dead ends: 744 [2022-07-19 17:34:38,116 INFO L226 Difference]: Without dead ends: 392 [2022-07-19 17:34:38,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:38,121 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 169 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:38,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 476 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:34:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-19 17:34:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 379. [2022-07-19 17:34:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 275 states have (on average 1.2581818181818183) internal successors, (346), 272 states have internal predecessors, (346), 59 states have call successors, (59), 26 states have call predecessors, (59), 44 states have return successors, (156), 80 states have call predecessors, (156), 57 states have call successors, (156) [2022-07-19 17:34:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 561 transitions. [2022-07-19 17:34:38,146 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 561 transitions. Word has length 53 [2022-07-19 17:34:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:38,147 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 561 transitions. [2022-07-19 17:34:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 561 transitions. [2022-07-19 17:34:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 17:34:38,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:38,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:34:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:34:38,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash -821329833, now seen corresponding path program 1 times [2022-07-19 17:34:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:38,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221559523] [2022-07-19 17:34:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:34:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:34:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:38,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221559523] [2022-07-19 17:34:38,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221559523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:38,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:38,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:34:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109821859] [2022-07-19 17:34:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:38,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:34:38,306 INFO L87 Difference]: Start difference. First operand 379 states and 561 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:39,214 INFO L93 Difference]: Finished difference Result 891 states and 1443 transitions. [2022-07-19 17:34:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:34:39,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2022-07-19 17:34:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:39,219 INFO L225 Difference]: With dead ends: 891 [2022-07-19 17:34:39,219 INFO L226 Difference]: Without dead ends: 527 [2022-07-19 17:34:39,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-07-19 17:34:39,223 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 254 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:39,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1131 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-19 17:34:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 488. [2022-07-19 17:34:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 359 states have (on average 1.2367688022284122) internal successors, (444), 349 states have internal predecessors, (444), 67 states have call successors, (67), 30 states have call predecessors, (67), 61 states have return successors, (223), 108 states have call predecessors, (223), 65 states have call successors, (223) [2022-07-19 17:34:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 734 transitions. [2022-07-19 17:34:39,251 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 734 transitions. Word has length 54 [2022-07-19 17:34:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:39,251 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 734 transitions. [2022-07-19 17:34:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 734 transitions. [2022-07-19 17:34:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 17:34:39,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:39,253 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 17:34:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:34:39,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:39,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash 686221976, now seen corresponding path program 1 times [2022-07-19 17:34:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584851341] [2022-07-19 17:34:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:34:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 17:34:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584851341] [2022-07-19 17:34:39,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584851341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:39,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:39,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044516595] [2022-07-19 17:34:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:39,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:39,414 INFO L87 Difference]: Start difference. First operand 488 states and 734 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:34:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:40,674 INFO L93 Difference]: Finished difference Result 1109 states and 1933 transitions. [2022-07-19 17:34:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 17:34:40,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 54 [2022-07-19 17:34:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:40,680 INFO L225 Difference]: With dead ends: 1109 [2022-07-19 17:34:40,680 INFO L226 Difference]: Without dead ends: 632 [2022-07-19 17:34:40,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-07-19 17:34:40,684 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 337 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:40,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 893 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:34:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-19 17:34:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-07-19 17:34:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 437 states have (on average 1.240274599542334) internal successors, (542), 419 states have internal predecessors, (542), 73 states have call successors, (73), 36 states have call predecessors, (73), 74 states have return successors, (319), 129 states have call predecessors, (319), 71 states have call successors, (319) [2022-07-19 17:34:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 934 transitions. [2022-07-19 17:34:40,719 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 934 transitions. Word has length 54 [2022-07-19 17:34:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:40,719 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 934 transitions. [2022-07-19 17:34:40,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:34:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 934 transitions. [2022-07-19 17:34:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 17:34:40,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:40,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:34:40,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:34:40,722 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2020535424, now seen corresponding path program 1 times [2022-07-19 17:34:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:40,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864346013] [2022-07-19 17:34:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:40,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:34:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:34:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:40,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864346013] [2022-07-19 17:34:40,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864346013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:40,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:40,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109401715] [2022-07-19 17:34:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:40,934 INFO L87 Difference]: Start difference. First operand 585 states and 934 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:42,106 INFO L93 Difference]: Finished difference Result 1233 states and 2204 transitions. [2022-07-19 17:34:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:34:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-07-19 17:34:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:42,111 INFO L225 Difference]: With dead ends: 1233 [2022-07-19 17:34:42,111 INFO L226 Difference]: Without dead ends: 666 [2022-07-19 17:34:42,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:42,116 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 124 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:42,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1182 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:34:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-19 17:34:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 641. [2022-07-19 17:34:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 479 states have (on average 1.2359081419624216) internal successors, (592), 462 states have internal predecessors, (592), 79 states have call successors, (79), 38 states have call predecessors, (79), 82 states have return successors, (351), 140 states have call predecessors, (351), 77 states have call successors, (351) [2022-07-19 17:34:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1022 transitions. [2022-07-19 17:34:42,172 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1022 transitions. Word has length 55 [2022-07-19 17:34:42,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:42,173 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1022 transitions. [2022-07-19 17:34:42,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1022 transitions. [2022-07-19 17:34:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 17:34:42,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:42,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:34:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:34:42,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash -758533954, now seen corresponding path program 1 times [2022-07-19 17:34:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:42,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018995728] [2022-07-19 17:34:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:42,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:34:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:34:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:42,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018995728] [2022-07-19 17:34:42,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018995728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:42,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:42,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:34:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073801332] [2022-07-19 17:34:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:34:42,311 INFO L87 Difference]: Start difference. First operand 641 states and 1022 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:43,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:43,312 INFO L93 Difference]: Finished difference Result 1619 states and 2966 transitions. [2022-07-19 17:34:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:34:43,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-07-19 17:34:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:43,320 INFO L225 Difference]: With dead ends: 1619 [2022-07-19 17:34:43,321 INFO L226 Difference]: Without dead ends: 996 [2022-07-19 17:34:43,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 17:34:43,327 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 283 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:43,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1121 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:34:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-07-19 17:34:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 959. [2022-07-19 17:34:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 723 states have (on average 1.2005532503457814) internal successors, (868), 682 states have internal predecessors, (868), 100 states have call successors, (100), 53 states have call predecessors, (100), 135 states have return successors, (631), 223 states have call predecessors, (631), 98 states have call successors, (631) [2022-07-19 17:34:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1599 transitions. [2022-07-19 17:34:43,478 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1599 transitions. Word has length 55 [2022-07-19 17:34:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:43,479 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1599 transitions. [2022-07-19 17:34:43,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:34:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1599 transitions. [2022-07-19 17:34:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 17:34:43,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:43,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 17:34:43,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:34:43,482 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 47417981, now seen corresponding path program 1 times [2022-07-19 17:34:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:43,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209918158] [2022-07-19 17:34:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:34:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 17:34:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:43,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209918158] [2022-07-19 17:34:43,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209918158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:43,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:43,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234978618] [2022-07-19 17:34:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:43,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:43,586 INFO L87 Difference]: Start difference. First operand 959 states and 1599 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:34:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:44,427 INFO L93 Difference]: Finished difference Result 2005 states and 3867 transitions. [2022-07-19 17:34:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:34:44,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-07-19 17:34:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:44,436 INFO L225 Difference]: With dead ends: 2005 [2022-07-19 17:34:44,436 INFO L226 Difference]: Without dead ends: 1064 [2022-07-19 17:34:44,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:34:44,445 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 283 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:44,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 988 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-07-19 17:34:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1011. [2022-07-19 17:34:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 760 states have (on average 1.1921052631578948) internal successors, (906), 723 states have internal predecessors, (906), 105 states have call successors, (105), 55 states have call predecessors, (105), 145 states have return successors, (640), 232 states have call predecessors, (640), 103 states have call successors, (640) [2022-07-19 17:34:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1651 transitions. [2022-07-19 17:34:44,537 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1651 transitions. Word has length 55 [2022-07-19 17:34:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:44,537 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1651 transitions. [2022-07-19 17:34:44,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:34:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1651 transitions. [2022-07-19 17:34:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 17:34:44,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:44,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 17:34:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:34:44,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2077142114, now seen corresponding path program 1 times [2022-07-19 17:34:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:44,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263474533] [2022-07-19 17:34:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:34:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 17:34:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:44,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263474533] [2022-07-19 17:34:44,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263474533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:44,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:44,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:34:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881027397] [2022-07-19 17:34:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:44,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:44,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:34:44,685 INFO L87 Difference]: Start difference. First operand 1011 states and 1651 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:34:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:45,446 INFO L93 Difference]: Finished difference Result 2001 states and 3742 transitions. [2022-07-19 17:34:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:34:45,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-19 17:34:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:45,456 INFO L225 Difference]: With dead ends: 2001 [2022-07-19 17:34:45,456 INFO L226 Difference]: Without dead ends: 1008 [2022-07-19 17:34:45,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:34:45,466 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 231 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:45,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 815 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-19 17:34:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 984. [2022-07-19 17:34:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 744 states have (on average 1.1935483870967742) internal successors, (888), 706 states have internal predecessors, (888), 100 states have call successors, (100), 55 states have call predecessors, (100), 139 states have return successors, (603), 222 states have call predecessors, (603), 98 states have call successors, (603) [2022-07-19 17:34:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1591 transitions. [2022-07-19 17:34:45,524 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1591 transitions. Word has length 56 [2022-07-19 17:34:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:45,525 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1591 transitions. [2022-07-19 17:34:45,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:34:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1591 transitions. [2022-07-19 17:34:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 17:34:45,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:45,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:45,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:34:45,527 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1561977805, now seen corresponding path program 1 times [2022-07-19 17:34:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420584582] [2022-07-19 17:34:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:34:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:34:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:34:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:45,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420584582] [2022-07-19 17:34:45,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420584582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:45,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:45,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:34:45,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339533877] [2022-07-19 17:34:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:45,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:34:45,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:34:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:34:45,675 INFO L87 Difference]: Start difference. First operand 984 states and 1591 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 17:34:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:46,236 INFO L93 Difference]: Finished difference Result 1996 states and 3804 transitions. [2022-07-19 17:34:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:34:46,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-07-19 17:34:46,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:46,245 INFO L225 Difference]: With dead ends: 1996 [2022-07-19 17:34:46,245 INFO L226 Difference]: Without dead ends: 1030 [2022-07-19 17:34:46,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:34:46,252 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 137 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:46,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 674 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 17:34:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-19 17:34:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 988. [2022-07-19 17:34:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 747 states have (on average 1.1927710843373494) internal successors, (891), 709 states have internal predecessors, (891), 100 states have call successors, (100), 55 states have call predecessors, (100), 140 states have return successors, (606), 223 states have call predecessors, (606), 98 states have call successors, (606) [2022-07-19 17:34:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1597 transitions. [2022-07-19 17:34:46,313 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1597 transitions. Word has length 59 [2022-07-19 17:34:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1597 transitions. [2022-07-19 17:34:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 17:34:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1597 transitions. [2022-07-19 17:34:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 17:34:46,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:46,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:46,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:34:46,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash -756700281, now seen corresponding path program 1 times [2022-07-19 17:34:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:46,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360787951] [2022-07-19 17:34:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:46,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:46,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:34:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:46,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:34:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:34:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360787951] [2022-07-19 17:34:46,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360787951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:46,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:46,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:34:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279677804] [2022-07-19 17:34:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:46,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:34:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:34:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:34:46,470 INFO L87 Difference]: Start difference. First operand 988 states and 1597 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 17:34:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:46,937 INFO L93 Difference]: Finished difference Result 2002 states and 3812 transitions. [2022-07-19 17:34:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:34:46,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2022-07-19 17:34:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:46,946 INFO L225 Difference]: With dead ends: 2002 [2022-07-19 17:34:46,946 INFO L226 Difference]: Without dead ends: 1032 [2022-07-19 17:34:46,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:34:46,952 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 137 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:46,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 665 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:34:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-07-19 17:34:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 990. [2022-07-19 17:34:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 749 states have (on average 1.1922563417890522) internal successors, (893), 710 states have internal predecessors, (893), 100 states have call successors, (100), 55 states have call predecessors, (100), 140 states have return successors, (606), 224 states have call predecessors, (606), 98 states have call successors, (606) [2022-07-19 17:34:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1599 transitions. [2022-07-19 17:34:47,016 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1599 transitions. Word has length 60 [2022-07-19 17:34:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:47,016 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1599 transitions. [2022-07-19 17:34:47,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 17:34:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1599 transitions. [2022-07-19 17:34:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 17:34:47,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:47,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:47,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:34:47,021 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1105648786, now seen corresponding path program 1 times [2022-07-19 17:34:47,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:47,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065958237] [2022-07-19 17:34:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:47,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:34:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:34:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:34:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 17:34:47,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:47,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065958237] [2022-07-19 17:34:47,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065958237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:47,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:47,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702360540] [2022-07-19 17:34:47,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:47,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:47,191 INFO L87 Difference]: Start difference. First operand 990 states and 1599 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 17:34:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:48,037 INFO L93 Difference]: Finished difference Result 2104 states and 4203 transitions. [2022-07-19 17:34:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:34:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-07-19 17:34:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:48,047 INFO L225 Difference]: With dead ends: 2104 [2022-07-19 17:34:48,047 INFO L226 Difference]: Without dead ends: 1132 [2022-07-19 17:34:48,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:34:48,055 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 177 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:48,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 856 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-19 17:34:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1089. [2022-07-19 17:34:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 825 states have (on average 1.2) internal successors, (990), 791 states have internal predecessors, (990), 116 states have call successors, (116), 62 states have call predecessors, (116), 147 states have return successors, (768), 235 states have call predecessors, (768), 114 states have call successors, (768) [2022-07-19 17:34:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1874 transitions. [2022-07-19 17:34:48,136 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1874 transitions. Word has length 65 [2022-07-19 17:34:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:48,137 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1874 transitions. [2022-07-19 17:34:48,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 17:34:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1874 transitions. [2022-07-19 17:34:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 17:34:48,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:48,140 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:48,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:34:48,140 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:48,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1397073829, now seen corresponding path program 1 times [2022-07-19 17:34:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:48,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960842307] [2022-07-19 17:34:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:48,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:34:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:34:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:34:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:34:48,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960842307] [2022-07-19 17:34:48,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960842307] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:34:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893689098] [2022-07-19 17:34:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:34:48,348 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 17:34:48,377 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 17:34:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:48,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:34:48,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:34:48,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:34:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:34:48,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:34:48,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 17:34:48,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 17:34:48,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 17:34:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:34:48,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893689098] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:34:48,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:34:48,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-07-19 17:34:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016769745] [2022-07-19 17:34:48,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:34:48,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 17:34:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 17:34:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:34:48,933 INFO L87 Difference]: Start difference. First operand 1089 states and 1874 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 7 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 17:34:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:50,097 INFO L93 Difference]: Finished difference Result 2375 states and 4767 transitions. [2022-07-19 17:34:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:34:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 7 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-07-19 17:34:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:50,109 INFO L225 Difference]: With dead ends: 2375 [2022-07-19 17:34:50,109 INFO L226 Difference]: Without dead ends: 1304 [2022-07-19 17:34:50,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:34:50,117 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 209 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:50,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1022 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:34:50,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-07-19 17:34:50,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1258. [2022-07-19 17:34:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 955 states have (on average 1.1769633507853403) internal successors, (1124), 902 states have internal predecessors, (1124), 122 states have call successors, (122), 64 states have call predecessors, (122), 180 states have return successors, (963), 291 states have call predecessors, (963), 120 states have call successors, (963) [2022-07-19 17:34:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2209 transitions. [2022-07-19 17:34:50,224 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2209 transitions. Word has length 67 [2022-07-19 17:34:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:50,225 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 2209 transitions. [2022-07-19 17:34:50,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 7 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 17:34:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2209 transitions. [2022-07-19 17:34:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 17:34:50,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:50,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:50,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:34:50,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:50,451 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:50,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash 123358461, now seen corresponding path program 1 times [2022-07-19 17:34:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:50,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191636954] [2022-07-19 17:34:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:34:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:34:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:34:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:34:50,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:50,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191636954] [2022-07-19 17:34:50,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191636954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:50,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:50,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:50,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591334425] [2022-07-19 17:34:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:50,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:50,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:50,619 INFO L87 Difference]: Start difference. First operand 1258 states and 2209 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:34:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:51,566 INFO L93 Difference]: Finished difference Result 2579 states and 5480 transitions. [2022-07-19 17:34:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:34:51,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2022-07-19 17:34:51,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:51,578 INFO L225 Difference]: With dead ends: 2579 [2022-07-19 17:34:51,578 INFO L226 Difference]: Without dead ends: 1339 [2022-07-19 17:34:51,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:34:51,585 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 115 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:51,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 881 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:34:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-07-19 17:34:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1209. [2022-07-19 17:34:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 918 states have (on average 1.1808278867102397) internal successors, (1084), 874 states have internal predecessors, (1084), 121 states have call successors, (121), 64 states have call predecessors, (121), 169 states have return successors, (892), 270 states have call predecessors, (892), 119 states have call successors, (892) [2022-07-19 17:34:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 2097 transitions. [2022-07-19 17:34:51,663 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 2097 transitions. Word has length 67 [2022-07-19 17:34:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:51,664 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 2097 transitions. [2022-07-19 17:34:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:34:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 2097 transitions. [2022-07-19 17:34:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 17:34:51,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:51,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:51,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:34:51,667 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1020751739, now seen corresponding path program 1 times [2022-07-19 17:34:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:51,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045123237] [2022-07-19 17:34:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:51,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:51,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:34:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:51,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:34:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:34:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:34:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045123237] [2022-07-19 17:34:51,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045123237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:51,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:51,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:34:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670093647] [2022-07-19 17:34:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:51,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:34:51,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:34:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:34:51,897 INFO L87 Difference]: Start difference. First operand 1209 states and 2097 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 17:34:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:52,947 INFO L93 Difference]: Finished difference Result 2504 states and 5137 transitions. [2022-07-19 17:34:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:34:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2022-07-19 17:34:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:52,959 INFO L225 Difference]: With dead ends: 2504 [2022-07-19 17:34:52,959 INFO L226 Difference]: Without dead ends: 1313 [2022-07-19 17:34:52,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:52,966 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 118 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:52,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1127 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:34:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-07-19 17:34:53,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1303. [2022-07-19 17:34:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 988 states have (on average 1.1751012145748987) internal successors, (1161), 946 states have internal predecessors, (1161), 128 states have call successors, (128), 66 states have call predecessors, (128), 186 states have return successors, (998), 290 states have call predecessors, (998), 126 states have call successors, (998) [2022-07-19 17:34:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2287 transitions. [2022-07-19 17:34:53,066 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2287 transitions. Word has length 67 [2022-07-19 17:34:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:53,066 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 2287 transitions. [2022-07-19 17:34:53,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 17:34:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2287 transitions. [2022-07-19 17:34:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 17:34:53,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:53,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-07-19 17:34:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 17:34:53,071 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -279030099, now seen corresponding path program 1 times [2022-07-19 17:34:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:53,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220551481] [2022-07-19 17:34:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:34:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:34:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:34:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220551481] [2022-07-19 17:34:53,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220551481] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:34:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043896304] [2022-07-19 17:34:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:34:53,255 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 17:34:53,256 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 17:34:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:53,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-19 17:34:53,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:34:53,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:34:53,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 17:34:53,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:34:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:34:53,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:34:53,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043896304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:53,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:34:53,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2022-07-19 17:34:53,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108319014] [2022-07-19 17:34:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:53,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:53,733 INFO L87 Difference]: Start difference. First operand 1303 states and 2287 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:34:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:54,537 INFO L93 Difference]: Finished difference Result 2615 states and 5374 transitions. [2022-07-19 17:34:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:34:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-07-19 17:34:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:54,551 INFO L225 Difference]: With dead ends: 2615 [2022-07-19 17:34:54,551 INFO L226 Difference]: Without dead ends: 1326 [2022-07-19 17:34:54,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:34:54,559 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 159 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:54,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 861 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-07-19 17:34:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1299. [2022-07-19 17:34:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 984 states have (on average 1.1758130081300813) internal successors, (1157), 945 states have internal predecessors, (1157), 129 states have call successors, (129), 68 states have call predecessors, (129), 185 states have return successors, (973), 285 states have call predecessors, (973), 127 states have call successors, (973) [2022-07-19 17:34:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 2259 transitions. [2022-07-19 17:34:54,640 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 2259 transitions. Word has length 74 [2022-07-19 17:34:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:54,640 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 2259 transitions. [2022-07-19 17:34:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:34:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 2259 transitions. [2022-07-19 17:34:54,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 17:34:54,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:54,644 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:54,669 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 17:34:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:54,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 680855499, now seen corresponding path program 1 times [2022-07-19 17:34:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432223329] [2022-07-19 17:34:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:34:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:34:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:34:54,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:54,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432223329] [2022-07-19 17:34:54,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432223329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:54,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:54,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:34:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198917507] [2022-07-19 17:34:54,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:55,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:34:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:34:55,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:34:55,001 INFO L87 Difference]: Start difference. First operand 1299 states and 2259 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:34:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:55,799 INFO L93 Difference]: Finished difference Result 2667 states and 5410 transitions. [2022-07-19 17:34:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:34:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-07-19 17:34:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:55,809 INFO L225 Difference]: With dead ends: 2667 [2022-07-19 17:34:55,809 INFO L226 Difference]: Without dead ends: 1386 [2022-07-19 17:34:55,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:34:55,816 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 218 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:55,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1088 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:34:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2022-07-19 17:34:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1337. [2022-07-19 17:34:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1010 states have (on average 1.1742574257425742) internal successors, (1186), 975 states have internal predecessors, (1186), 132 states have call successors, (132), 69 states have call predecessors, (132), 194 states have return successors, (980), 292 states have call predecessors, (980), 130 states have call successors, (980) [2022-07-19 17:34:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2298 transitions. [2022-07-19 17:34:55,897 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2298 transitions. Word has length 74 [2022-07-19 17:34:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:55,898 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 2298 transitions. [2022-07-19 17:34:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:34:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2298 transitions. [2022-07-19 17:34:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:34:55,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:55,902 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:55,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 17:34:55,903 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash 238868692, now seen corresponding path program 1 times [2022-07-19 17:34:55,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:55,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208433354] [2022-07-19 17:34:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:55,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:34:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:34:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:34:56,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:56,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208433354] [2022-07-19 17:34:56,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208433354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:34:56,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:34:56,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:34:56,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486489493] [2022-07-19 17:34:56,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:34:56,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:34:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:56,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:34:56,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:34:56,095 INFO L87 Difference]: Start difference. First operand 1337 states and 2298 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:34:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:56,811 INFO L93 Difference]: Finished difference Result 2648 states and 5329 transitions. [2022-07-19 17:34:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:34:56,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-07-19 17:34:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:56,821 INFO L225 Difference]: With dead ends: 2648 [2022-07-19 17:34:56,821 INFO L226 Difference]: Without dead ends: 1329 [2022-07-19 17:34:56,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:34:56,828 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 179 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 897 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:34:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-07-19 17:34:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1310. [2022-07-19 17:34:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 993 states have (on average 1.1762336354481369) internal successors, (1168), 958 states have internal predecessors, (1168), 129 states have call successors, (129), 69 states have call predecessors, (129), 187 states have return successors, (955), 282 states have call predecessors, (955), 127 states have call successors, (955) [2022-07-19 17:34:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2252 transitions. [2022-07-19 17:34:56,905 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2252 transitions. Word has length 75 [2022-07-19 17:34:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2252 transitions. [2022-07-19 17:34:56,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:34:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2252 transitions. [2022-07-19 17:34:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 17:34:56,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:56,910 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 17:34:56,911 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:34:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:34:56,911 INFO L85 PathProgramCache]: Analyzing trace with hash -414223452, now seen corresponding path program 1 times [2022-07-19 17:34:56,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:34:56,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138075355] [2022-07-19 17:34:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:56,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:34:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:34:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:34:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:34:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:34:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:34:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 17:34:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:34:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138075355] [2022-07-19 17:34:57,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138075355] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:34:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754457629] [2022-07-19 17:34:57,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:34:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:34:57,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:34:57,098 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 17:34:57,099 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 17:34:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:34:57,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 17:34:57,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:34:57,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 17:34:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:34:57,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:34:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:34:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754457629] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:34:57,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:34:57,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-19 17:34:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180814425] [2022-07-19 17:34:57,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:34:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 17:34:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:34:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 17:34:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:34:57,819 INFO L87 Difference]: Start difference. First operand 1310 states and 2252 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:34:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:34:59,614 INFO L93 Difference]: Finished difference Result 3290 states and 7119 transitions. [2022-07-19 17:34:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 17:34:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-07-19 17:34:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:34:59,641 INFO L225 Difference]: With dead ends: 3290 [2022-07-19 17:34:59,641 INFO L226 Difference]: Without dead ends: 1998 [2022-07-19 17:34:59,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2022-07-19 17:34:59,651 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 532 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:34:59,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1517 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:34:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-07-19 17:34:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1933. [2022-07-19 17:34:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1479 states have (on average 1.1521298174442192) internal successors, (1704), 1390 states have internal predecessors, (1704), 164 states have call successors, (164), 93 states have call predecessors, (164), 289 states have return successors, (1915), 449 states have call predecessors, (1915), 162 states have call successors, (1915) [2022-07-19 17:34:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3783 transitions. [2022-07-19 17:34:59,791 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3783 transitions. Word has length 72 [2022-07-19 17:34:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:34:59,792 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3783 transitions. [2022-07-19 17:34:59,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:34:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3783 transitions. [2022-07-19 17:34:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:34:59,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:34:59,796 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:34:59,823 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 17:35:00,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:00,022 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash -529991506, now seen corresponding path program 1 times [2022-07-19 17:35:00,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:00,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945034876] [2022-07-19 17:35:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:35:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:35:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:35:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:35:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:00,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945034876] [2022-07-19 17:35:00,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945034876] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:00,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146390962] [2022-07-19 17:35:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:00,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:00,236 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 17:35:00,264 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 17:35:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:00,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 17:35:00,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:00,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 17:35:00,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:35:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:35:00,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:35:00,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-19 17:35:00,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-19 17:35:01,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-19 17:35:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:35:01,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146390962] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:35:01,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:35:01,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2022-07-19 17:35:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961981181] [2022-07-19 17:35:01,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:35:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 17:35:01,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 17:35:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:35:01,077 INFO L87 Difference]: Start difference. First operand 1933 states and 3783 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:35:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:02,939 INFO L93 Difference]: Finished difference Result 5000 states and 12826 transitions. [2022-07-19 17:35:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 17:35:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2022-07-19 17:35:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:02,963 INFO L225 Difference]: With dead ends: 5000 [2022-07-19 17:35:02,963 INFO L226 Difference]: Without dead ends: 3085 [2022-07-19 17:35:02,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=923, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 17:35:02,977 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 533 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:02,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1621 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:35:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2022-07-19 17:35:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2960. [2022-07-19 17:35:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2268 states have (on average 1.1124338624338623) internal successors, (2523), 2211 states have internal predecessors, (2523), 187 states have call successors, (187), 111 states have call predecessors, (187), 504 states have return successors, (4302), 637 states have call predecessors, (4302), 185 states have call successors, (4302) [2022-07-19 17:35:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 7012 transitions. [2022-07-19 17:35:03,254 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 7012 transitions. Word has length 75 [2022-07-19 17:35:03,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:03,254 INFO L495 AbstractCegarLoop]: Abstraction has 2960 states and 7012 transitions. [2022-07-19 17:35:03,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:35:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 7012 transitions. [2022-07-19 17:35:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 17:35:03,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:03,263 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:03,293 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 17:35:03,487 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,SelfDestructingSolverStorable25 [2022-07-19 17:35:03,487 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash -224628074, now seen corresponding path program 1 times [2022-07-19 17:35:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:03,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939969962] [2022-07-19 17:35:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:35:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:35:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:35:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:35:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 17:35:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 17:35:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939969962] [2022-07-19 17:35:03,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939969962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:03,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:35:03,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:35:03,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087434864] [2022-07-19 17:35:03,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:03,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:35:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:03,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:35:03,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:35:03,770 INFO L87 Difference]: Start difference. First operand 2960 states and 7012 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:35:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:04,832 INFO L93 Difference]: Finished difference Result 5919 states and 17917 transitions. [2022-07-19 17:35:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:35:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 108 [2022-07-19 17:35:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:04,860 INFO L225 Difference]: With dead ends: 5919 [2022-07-19 17:35:04,860 INFO L226 Difference]: Without dead ends: 2968 [2022-07-19 17:35:04,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:35:04,883 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 105 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:04,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 730 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 17:35:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2022-07-19 17:35:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2951. [2022-07-19 17:35:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 2261 states have (on average 1.1123396727111898) internal successors, (2515), 2203 states have internal predecessors, (2515), 187 states have call successors, (187), 111 states have call predecessors, (187), 502 states have return successors, (4299), 636 states have call predecessors, (4299), 185 states have call successors, (4299) [2022-07-19 17:35:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 7001 transitions. [2022-07-19 17:35:05,107 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 7001 transitions. Word has length 108 [2022-07-19 17:35:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:05,108 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 7001 transitions. [2022-07-19 17:35:05,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:35:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 7001 transitions. [2022-07-19 17:35:05,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 17:35:05,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:05,116 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 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 17:35:05,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 17:35:05,117 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:05,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1144240673, now seen corresponding path program 1 times [2022-07-19 17:35:05,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:05,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495242878] [2022-07-19 17:35:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:35:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:35:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:35:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:35:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:35:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 17:35:05,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:05,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495242878] [2022-07-19 17:35:05,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495242878] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:05,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238787195] [2022-07-19 17:35:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:05,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:05,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:35:05,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 17:35:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:06,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 17:35:06,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:06,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 17:35:06,790 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6| Int) (v_ArrVal_6397 Int)) (and (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (= (store |c_old(#memory_int)| c_~user~0.base (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|) v_ArrVal_6397)) |c_#memory_int|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|))) is different from true [2022-07-19 17:35:06,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:06,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-19 17:35:06,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 17:35:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 1 not checked. [2022-07-19 17:35:06,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:35:07,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-19 17:35:07,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:07,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-19 17:35:07,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:07,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-19 17:35:07,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:07,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-19 17:35:07,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:07,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-07-19 17:35:07,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:08,287 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6466 Int) (|v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86| Int)) (or (not (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86|)) (not (<= (+ c_~user~0.offset 16) |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66|)) (not (= ~sys_state_s~0~AS_IDLE (select (store (select |c_#memory_int| c_~user~0.base) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66|) v_ArrVal_6466) c_~user~0.offset))))) is different from false [2022-07-19 17:35:08,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238787195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:08,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 17:35:08,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2022-07-19 17:35:08,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693011341] [2022-07-19 17:35:08,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 17:35:08,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 17:35:08,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 17:35:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=300, Unknown=2, NotChecked=70, Total=420 [2022-07-19 17:35:08,290 INFO L87 Difference]: Start difference. First operand 2951 states and 7001 transitions. Second operand has 20 states, 18 states have (on average 6.166666666666667) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-19 17:35:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:18,433 INFO L93 Difference]: Finished difference Result 6727 states and 20768 transitions. [2022-07-19 17:35:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 17:35:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.166666666666667) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 111 [2022-07-19 17:35:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:18,476 INFO L225 Difference]: With dead ends: 6727 [2022-07-19 17:35:18,476 INFO L226 Difference]: Without dead ends: 3794 [2022-07-19 17:35:18,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=204, Invalid=1194, Unknown=16, NotChecked=146, Total=1560 [2022-07-19 17:35:18,573 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 399 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:18,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1825 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1869 Invalid, 0 Unknown, 379 Unchecked, 1.7s Time] [2022-07-19 17:35:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2022-07-19 17:35:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3592. [2022-07-19 17:35:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 2760 states have (on average 1.103985507246377) internal successors, (3047), 2689 states have internal predecessors, (3047), 210 states have call successors, (210), 126 states have call predecessors, (210), 621 states have return successors, (5697), 776 states have call predecessors, (5697), 208 states have call successors, (5697) [2022-07-19 17:35:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 8954 transitions. [2022-07-19 17:35:18,915 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 8954 transitions. Word has length 111 [2022-07-19 17:35:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:18,915 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 8954 transitions. [2022-07-19 17:35:18,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.166666666666667) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-19 17:35:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 8954 transitions. [2022-07-19 17:35:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 17:35:18,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:18,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:18,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 17:35:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 17:35:19,154 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -321625164, now seen corresponding path program 1 times [2022-07-19 17:35:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:19,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226605004] [2022-07-19 17:35:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:35:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:35:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 17:35:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:35:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226605004] [2022-07-19 17:35:19,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226605004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:19,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:35:19,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 17:35:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793299065] [2022-07-19 17:35:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:19,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 17:35:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 17:35:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:35:19,405 INFO L87 Difference]: Start difference. First operand 3592 states and 8954 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 17:35:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:20,721 INFO L93 Difference]: Finished difference Result 7223 states and 23120 transitions. [2022-07-19 17:35:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:35:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 81 [2022-07-19 17:35:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:20,755 INFO L225 Difference]: With dead ends: 7223 [2022-07-19 17:35:20,756 INFO L226 Difference]: Without dead ends: 3640 [2022-07-19 17:35:20,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-19 17:35:20,839 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 105 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:20,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 990 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:35:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-07-19 17:35:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3491. [2022-07-19 17:35:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 2685 states have (on average 1.1065176908752328) internal successors, (2971), 2612 states have internal predecessors, (2971), 207 states have call successors, (207), 125 states have call predecessors, (207), 598 states have return successors, (5650), 753 states have call predecessors, (5650), 205 states have call successors, (5650) [2022-07-19 17:35:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 8828 transitions. [2022-07-19 17:35:21,122 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 8828 transitions. Word has length 81 [2022-07-19 17:35:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:21,122 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 8828 transitions. [2022-07-19 17:35:21,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 17:35:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 8828 transitions. [2022-07-19 17:35:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 17:35:21,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:21,135 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 17:35:21,135 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash 305592142, now seen corresponding path program 1 times [2022-07-19 17:35:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:21,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991050271] [2022-07-19 17:35:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:35:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:35:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:35:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:35:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:35:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:35:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 17:35:21,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991050271] [2022-07-19 17:35:21,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991050271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:21,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817997440] [2022-07-19 17:35:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:21,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:21,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:21,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:35:21,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 17:35:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:22,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 17:35:22,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:22,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 17:35:23,211 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7807 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_89| Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88| Int)) (and (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (= (store |c_old(#memory_int)| c_~user~0.base (store (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88|) 0) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_89|) v_ArrVal_7807)) |c_#memory_int|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_88| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_89|))) is different from true [2022-07-19 17:35:23,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:23,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:23,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:23,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-07-19 17:35:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:23,397 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 17:35:23,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2022-07-19 17:35:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 2 not checked. [2022-07-19 17:35:23,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:35:23,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-07-19 17:35:23,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:23,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:23,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-07-19 17:35:23,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:23,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 17:35:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 17:35:25,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817997440] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:35:25,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:35:25,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 24 [2022-07-19 17:35:25,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506570510] [2022-07-19 17:35:25,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:35:25,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 17:35:25,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 17:35:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=440, Unknown=1, NotChecked=42, Total=552 [2022-07-19 17:35:25,759 INFO L87 Difference]: Start difference. First operand 3491 states and 8828 transitions. Second operand has 24 states, 23 states have (on average 5.260869565217392) internal successors, (121), 21 states have internal predecessors, (121), 5 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 17:35:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:30,490 INFO L93 Difference]: Finished difference Result 7904 states and 25581 transitions. [2022-07-19 17:35:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 17:35:30,490 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.260869565217392) internal successors, (121), 21 states have internal predecessors, (121), 5 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-19 17:35:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:30,578 INFO L225 Difference]: With dead ends: 7904 [2022-07-19 17:35:30,578 INFO L226 Difference]: Without dead ends: 4431 [2022-07-19 17:35:30,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=178, Invalid=1013, Unknown=3, NotChecked=66, Total=1260 [2022-07-19 17:35:30,611 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 308 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 719 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:30,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 2242 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 946 Invalid, 0 Unknown, 719 Unchecked, 1.2s Time] [2022-07-19 17:35:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2022-07-19 17:35:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 3869. [2022-07-19 17:35:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 2984 states have (on average 1.0867962466487935) internal successors, (3243), 2877 states have internal predecessors, (3243), 199 states have call successors, (199), 110 states have call predecessors, (199), 685 states have return successors, (6861), 881 states have call predecessors, (6861), 197 states have call successors, (6861) [2022-07-19 17:35:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 10303 transitions. [2022-07-19 17:35:31,053 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 10303 transitions. Word has length 116 [2022-07-19 17:35:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:31,054 INFO L495 AbstractCegarLoop]: Abstraction has 3869 states and 10303 transitions. [2022-07-19 17:35:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.260869565217392) internal successors, (121), 21 states have internal predecessors, (121), 5 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 17:35:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 10303 transitions. [2022-07-19 17:35:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 17:35:31,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:31,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:31,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 17:35:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:31,275 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1568837159, now seen corresponding path program 1 times [2022-07-19 17:35:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:31,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722395274] [2022-07-19 17:35:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:35:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:35:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:35:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:35:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 17:35:31,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:31,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722395274] [2022-07-19 17:35:31,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722395274] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:31,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188960635] [2022-07-19 17:35:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:31,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:31,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:35:31,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 17:35:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:32,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 17:35:32,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:32,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:35:32,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-19 17:35:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 17:35:32,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:35:32,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188960635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:32,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:35:32,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-19 17:35:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006380262] [2022-07-19 17:35:32,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:32,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:35:32,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:35:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:35:32,441 INFO L87 Difference]: Start difference. First operand 3869 states and 10303 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:35:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:33,052 INFO L93 Difference]: Finished difference Result 7730 states and 26967 transitions. [2022-07-19 17:35:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:35:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 105 [2022-07-19 17:35:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:33,088 INFO L225 Difference]: With dead ends: 7730 [2022-07-19 17:35:33,088 INFO L226 Difference]: Without dead ends: 3879 [2022-07-19 17:35:33,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-19 17:35:33,119 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 38 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:33,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 962 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:35:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2022-07-19 17:35:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3876. [2022-07-19 17:35:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 2990 states have (on average 1.0869565217391304) internal successors, (3250), 2883 states have internal predecessors, (3250), 199 states have call successors, (199), 111 states have call predecessors, (199), 686 states have return successors, (6861), 881 states have call predecessors, (6861), 197 states have call successors, (6861) [2022-07-19 17:35:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 10310 transitions. [2022-07-19 17:35:33,537 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 10310 transitions. Word has length 105 [2022-07-19 17:35:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:33,538 INFO L495 AbstractCegarLoop]: Abstraction has 3876 states and 10310 transitions. [2022-07-19 17:35:33,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:35:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 10310 transitions. [2022-07-19 17:35:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 17:35:33,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:33,542 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:33,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 17:35:33,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-19 17:35:33,767 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:33,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1426745457, now seen corresponding path program 2 times [2022-07-19 17:35:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:33,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434199705] [2022-07-19 17:35:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:35:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:35:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:35:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 17:35:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:34,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434199705] [2022-07-19 17:35:34,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434199705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:34,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:35:34,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 17:35:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901886000] [2022-07-19 17:35:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 17:35:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 17:35:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:35:34,002 INFO L87 Difference]: Start difference. First operand 3876 states and 10310 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 17:35:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:34,963 INFO L93 Difference]: Finished difference Result 7863 states and 26961 transitions. [2022-07-19 17:35:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:35:34,963 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 86 [2022-07-19 17:35:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:35,008 INFO L225 Difference]: With dead ends: 7863 [2022-07-19 17:35:35,008 INFO L226 Difference]: Without dead ends: 4005 [2022-07-19 17:35:35,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:35:35,051 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 68 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:35,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1545 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:35:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2022-07-19 17:35:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3843. [2022-07-19 17:35:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 2964 states have (on average 1.0873819163292848) internal successors, (3223), 2862 states have internal predecessors, (3223), 198 states have call successors, (198), 111 states have call predecessors, (198), 680 states have return successors, (6707), 869 states have call predecessors, (6707), 196 states have call successors, (6707) [2022-07-19 17:35:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 10128 transitions. [2022-07-19 17:35:35,481 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 10128 transitions. Word has length 86 [2022-07-19 17:35:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:35,481 INFO L495 AbstractCegarLoop]: Abstraction has 3843 states and 10128 transitions. [2022-07-19 17:35:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 17:35:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 10128 transitions. [2022-07-19 17:35:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:35:35,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:35,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:35,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 17:35:35,486 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1146709667, now seen corresponding path program 1 times [2022-07-19 17:35:35,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076366088] [2022-07-19 17:35:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:35:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:35:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 17:35:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:35:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:35:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:35,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076366088] [2022-07-19 17:35:35,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076366088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:35,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124491449] [2022-07-19 17:35:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:35,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:35,800 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:35:35,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 17:35:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:36,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 17:35:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 17:35:36,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:35:36,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124491449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:36,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:35:36,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 19 [2022-07-19 17:35:36,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572213472] [2022-07-19 17:35:36,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:35:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:35:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-19 17:35:36,628 INFO L87 Difference]: Start difference. First operand 3843 states and 10128 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 17:35:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:36,906 INFO L93 Difference]: Finished difference Result 7752 states and 26315 transitions. [2022-07-19 17:35:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:35:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 87 [2022-07-19 17:35:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:36,939 INFO L225 Difference]: With dead ends: 7752 [2022-07-19 17:35:36,939 INFO L226 Difference]: Without dead ends: 3927 [2022-07-19 17:35:36,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-07-19 17:35:36,973 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:36,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1538 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:35:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2022-07-19 17:35:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3838. [2022-07-19 17:35:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 2961 states have (on average 1.0871327254305978) internal successors, (3219), 2858 states have internal predecessors, (3219), 197 states have call successors, (197), 111 states have call predecessors, (197), 679 states have return successors, (6641), 868 states have call predecessors, (6641), 195 states have call successors, (6641) [2022-07-19 17:35:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10057 transitions. [2022-07-19 17:35:37,382 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10057 transitions. Word has length 87 [2022-07-19 17:35:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:37,382 INFO L495 AbstractCegarLoop]: Abstraction has 3838 states and 10057 transitions. [2022-07-19 17:35:37,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 17:35:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10057 transitions. [2022-07-19 17:35:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 17:35:37,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:37,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:37,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 17:35:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:37,604 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1912288179, now seen corresponding path program 1 times [2022-07-19 17:35:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532365906] [2022-07-19 17:35:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:35:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:35:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:35:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:35:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:35:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 17:35:37,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532365906] [2022-07-19 17:35:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532365906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:37,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:35:37,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:35:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589494877] [2022-07-19 17:35:37,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:37,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:35:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:35:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:35:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:35:37,781 INFO L87 Difference]: Start difference. First operand 3838 states and 10057 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:35:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:35:38,510 INFO L93 Difference]: Finished difference Result 7695 states and 26161 transitions. [2022-07-19 17:35:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:35:38,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2022-07-19 17:35:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:35:38,562 INFO L225 Difference]: With dead ends: 7695 [2022-07-19 17:35:38,562 INFO L226 Difference]: Without dead ends: 3843 [2022-07-19 17:35:38,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:35:38,616 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 76 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:35:38,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 573 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 17:35:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-07-19 17:35:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3772. [2022-07-19 17:35:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 2917 states have (on average 1.0747343160781624) internal successors, (3135), 2810 states have internal predecessors, (3135), 180 states have call successors, (180), 93 states have call predecessors, (180), 674 states have return successors, (6619), 868 states have call predecessors, (6619), 178 states have call successors, (6619) [2022-07-19 17:35:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 9934 transitions. [2022-07-19 17:35:38,916 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 9934 transitions. Word has length 88 [2022-07-19 17:35:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:35:38,916 INFO L495 AbstractCegarLoop]: Abstraction has 3772 states and 9934 transitions. [2022-07-19 17:35:38,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:35:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 9934 transitions. [2022-07-19 17:35:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 17:35:38,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:38,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:38,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 17:35:38,924 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1061052459, now seen corresponding path program 1 times [2022-07-19 17:35:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:35:38,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325885823] [2022-07-19 17:35:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:35:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:35:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:35:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:35:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:35:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:35:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:35:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:35:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:35:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:35:39,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325885823] [2022-07-19 17:35:39,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325885823] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:35:39,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174066155] [2022-07-19 17:35:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:39,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:35:39,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:39,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:35:39,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 17:35:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:40,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-19 17:35:40,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:40,359 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 17:35:40,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-19 17:35:40,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:40,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2022-07-19 17:35:40,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 17:35:40,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 58 [2022-07-19 17:35:40,483 INFO L356 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2022-07-19 17:35:40,484 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 17:35:40,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 17:35:40,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-19 17:35:40,701 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_1 input size 78 context size 78 output size 78 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 17:35:40,703 INFO L158 Benchmark]: Toolchain (without parser) took 84806.50ms. Allocated memory was 90.2MB in the beginning and 1.0GB in the end (delta: 939.5MB). Free memory was 54.2MB in the beginning and 778.9MB in the end (delta: -724.7MB). Peak memory consumption was 214.5MB. Max. memory is 16.1GB. [2022-07-19 17:35:40,703 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 61.3MB in the beginning and 61.3MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 17:35:40,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.77ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 50.1MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 17:35:40,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.16ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 47.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:35:40,704 INFO L158 Benchmark]: Boogie Preprocessor took 63.22ms. Allocated memory is still 90.2MB. Free memory was 47.2MB in the beginning and 44.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 17:35:40,704 INFO L158 Benchmark]: RCFGBuilder took 756.05ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 44.2MB in the beginning and 53.0MB in the end (delta: -8.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-19 17:35:40,704 INFO L158 Benchmark]: TraceAbstraction took 83297.91ms. Allocated memory was 109.1MB in the beginning and 1.0GB in the end (delta: 920.6MB). Free memory was 52.3MB in the beginning and 778.9MB in the end (delta: -726.6MB). Peak memory consumption was 194.9MB. Max. memory is 16.1GB. [2022-07-19 17:35:40,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 61.3MB in the beginning and 61.3MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.77ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 50.1MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.16ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 47.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.22ms. Allocated memory is still 90.2MB. Free memory was 47.2MB in the beginning and 44.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 756.05ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 44.2MB in the beginning and 53.0MB in the end (delta: -8.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * TraceAbstraction took 83297.91ms. Allocated memory was 109.1MB in the beginning and 1.0GB in the end (delta: 920.6MB). Free memory was 52.3MB in the beginning and 778.9MB in the end (delta: -726.6MB). Peak memory consumption was 194.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 input size 78 context size 78 output size 78 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 input size 78 context size 78 output size 78: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-19 17:35:40,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/recursive-with-pointer/system-with-recursion.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:35:42,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:35:42,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:35:42,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:35:42,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:35:42,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:35:42,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:35:42,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:35:42,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:35:42,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:35:42,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:35:42,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:35:42,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:35:42,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:35:42,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:35:42,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:35:42,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:35:42,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:35:42,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:35:42,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:35:42,704 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:35:42,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:35:42,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:35:42,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:35:42,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:35:42,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:35:42,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:35:42,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:35:42,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:35:42,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:35:42,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:35:42,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:35:42,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:35:42,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:35:42,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:35:42,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:35:42,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:35:42,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:35:42,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:35:42,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:35:42,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:35:42,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:35:42,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 17:35:42,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:35:42,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:35:42,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:35:42,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:35:42,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:35:42,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:35:42,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:35:42,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:35:42,761 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:35:42,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:35:42,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:35:42,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:35:42,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:35:42,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:35:42,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:35:42,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:35:42,764 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 17:35:42,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 17:35:42,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 17:35:42,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:35:42,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:35:42,765 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:35:42,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:35:42,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:35:42,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:35:42,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:35:42,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:35:42,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:35:42,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:35:42,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:35:42,767 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 17:35:42,767 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 17:35:42,767 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:35:42,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:35:42,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:35:42,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 17:35:42,768 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2022-07-19 17:35:43,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:35:43,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:35:43,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:35:43,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:35:43,071 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:35:43,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-19 17:35:43,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a790a79/4b0cd59503cf47568aba3e5505f5a3e0/FLAG1805fa662 [2022-07-19 17:35:43,594 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:35:43,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-19 17:35:43,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a790a79/4b0cd59503cf47568aba3e5505f5a3e0/FLAG1805fa662 [2022-07-19 17:35:44,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a790a79/4b0cd59503cf47568aba3e5505f5a3e0 [2022-07-19 17:35:44,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:35:44,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:35:44,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:35:44,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:35:44,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:35:44,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31eb7c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44, skipping insertion in model container [2022-07-19 17:35:44,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:35:44,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:35:44,618 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/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-19 17:35:44,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:35:44,654 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:35:44,731 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/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-07-19 17:35:44,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:35:44,775 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:35:44,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44 WrapperNode [2022-07-19 17:35:44,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:35:44,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:35:44,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:35:44,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:35:44,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,864 INFO L137 Inliner]: procedures = 188, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 207 [2022-07-19 17:35:44,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:35:44,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:35:44,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:35:44,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:35:44,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:35:44,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:35:44,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:35:44,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:35:44,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (1/1) ... [2022-07-19 17:35:44,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:35:44,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:35:44,954 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 17:35:44,969 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 17:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-19 17:35:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-19 17:35:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-07-19 17:35:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-07-19 17:35:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 17:35:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-07-19 17:35:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-07-19 17:35:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-07-19 17:35:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-07-19 17:35:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 17:35:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-19 17:35:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 17:35:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-19 17:35:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-07-19 17:35:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-07-19 17:35:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-07-19 17:35:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-07-19 17:35:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-19 17:35:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:35:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:35:45,146 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:35:45,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:35:47,947 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:35:47,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:35:47,956 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 17:35:47,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:35:47 BoogieIcfgContainer [2022-07-19 17:35:47,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:35:47,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:35:47,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:35:47,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:35:47,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:35:44" (1/3) ... [2022-07-19 17:35:47,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1909eef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:35:47, skipping insertion in model container [2022-07-19 17:35:47,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:35:44" (2/3) ... [2022-07-19 17:35:47,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1909eef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:35:47, skipping insertion in model container [2022-07-19 17:35:47,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:35:47" (3/3) ... [2022-07-19 17:35:47,967 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-07-19 17:35:47,978 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:35:47,979 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:35:48,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:35:48,056 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@7b0301a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37ea0080 [2022-07-19 17:35:48,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:35:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-19 17:35:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 17:35:48,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:35:48,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:35:48,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:35:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:35:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash -965536278, now seen corresponding path program 1 times [2022-07-19 17:35:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:35:48,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531900184] [2022-07-19 17:35:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:35:48,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:35:48,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:35:48,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:35:48,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 17:35:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:35:48,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 17:35:48,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:35:48,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:35:48,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:35:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:35:48,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:35:48,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:35:48,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531900184] [2022-07-19 17:35:48,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531900184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:35:48,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:35:48,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:35:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271932382] [2022-07-19 17:35:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:35:48,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:35:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:35:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:35:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:35:48,490 INFO L87 Difference]: Start difference. First operand has 132 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 17:35:51,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:35:52,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:35:56,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:36:01,162 INFO L93 Difference]: Finished difference Result 285 states and 409 transitions. [2022-07-19 17:36:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:36:01,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-19 17:36:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:36:01,174 INFO L225 Difference]: With dead ends: 285 [2022-07-19 17:36:01,174 INFO L226 Difference]: Without dead ends: 134 [2022-07-19 17:36:01,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:36:01,180 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 36 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:36:01,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1035 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-07-19 17:36:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-19 17:36:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-07-19 17:36:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 96 states have internal predecessors, (123), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 17:36:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-07-19 17:36:01,221 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 19 [2022-07-19 17:36:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:36:01,222 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-07-19 17:36:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 17:36:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-07-19 17:36:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 17:36:01,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:36:01,225 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:36:01,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:36:01,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:36:01,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:36:01,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:36:01,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1463372220, now seen corresponding path program 1 times [2022-07-19 17:36:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:36:01,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675638243] [2022-07-19 17:36:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:36:01,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:36:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:36:01,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:36:01,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 17:36:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:36:01,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:36:01,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:36:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:01,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:36:01,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:36:01,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675638243] [2022-07-19 17:36:01,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675638243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:36:01,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:36:01,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:36:01,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014728829] [2022-07-19 17:36:01,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:36:01,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:36:01,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:36:01,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:36:01,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:36:01,625 INFO L87 Difference]: Start difference. First operand 133 states and 179 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:36:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:36:01,708 INFO L93 Difference]: Finished difference Result 253 states and 363 transitions. [2022-07-19 17:36:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:36:01,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-07-19 17:36:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:36:01,711 INFO L225 Difference]: With dead ends: 253 [2022-07-19 17:36:01,711 INFO L226 Difference]: Without dead ends: 133 [2022-07-19 17:36:01,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 17:36:01,713 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 6 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:36:01,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 459 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:36:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-19 17:36:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-19 17:36:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 96 states have internal predecessors, (122), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 17:36:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-07-19 17:36:01,726 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 35 [2022-07-19 17:36:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:36:01,726 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-07-19 17:36:01,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:36:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-07-19 17:36:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 17:36:01,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:36:01,729 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:36:01,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-19 17:36:01,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:36:01,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:36:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:36:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1541012852, now seen corresponding path program 1 times [2022-07-19 17:36:01,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:36:01,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2884762] [2022-07-19 17:36:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:36:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:36:01,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:36:01,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:36:01,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 17:36:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:36:02,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 17:36:02,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:36:02,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:36:02,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:36:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:02,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:36:02,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:36:02,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2884762] [2022-07-19 17:36:02,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2884762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:36:02,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:36:02,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:36:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954134824] [2022-07-19 17:36:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:36:02,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:36:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:36:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:36:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:36:02,239 INFO L87 Difference]: Start difference. First operand 133 states and 178 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:36:04,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:05,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:06,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:36:13,756 INFO L93 Difference]: Finished difference Result 284 states and 408 transitions. [2022-07-19 17:36:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:36:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-19 17:36:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:36:13,762 INFO L225 Difference]: With dead ends: 284 [2022-07-19 17:36:13,762 INFO L226 Difference]: Without dead ends: 166 [2022-07-19 17:36:13,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:36:13,763 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 38 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:36:13,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1070 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-07-19 17:36:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-19 17:36:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2022-07-19 17:36:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 32 states have call successors, (32), 12 states have call predecessors, (32), 11 states have return successors, (30), 27 states have call predecessors, (30), 28 states have call successors, (30) [2022-07-19 17:36:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 210 transitions. [2022-07-19 17:36:13,782 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 210 transitions. Word has length 36 [2022-07-19 17:36:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:36:13,782 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 210 transitions. [2022-07-19 17:36:13,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:36:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 210 transitions. [2022-07-19 17:36:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 17:36:13,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:36:13,788 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:36:13,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:36:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:36:14,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:36:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:36:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1282847414, now seen corresponding path program 1 times [2022-07-19 17:36:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:36:14,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262346525] [2022-07-19 17:36:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:36:14,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:36:14,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:36:14,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:36:14,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 17:36:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:36:14,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 17:36:14,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:36:14,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:36:14,409 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-19 17:36:14,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-19 17:36:14,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:36:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:14,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:36:16,526 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-07-19 17:36:18,539 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) (_ bv0 32) ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-07-19 17:36:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:20,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:36:20,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262346525] [2022-07-19 17:36:20,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262346525] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 17:36:20,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:36:20,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-07-19 17:36:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352930758] [2022-07-19 17:36:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:36:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:36:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:36:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:36:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2022-07-19 17:36:20,730 INFO L87 Difference]: Start difference. First operand 155 states and 210 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:36:30,418 WARN L233 SmtUtils]: Spent 9.53s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 17:36:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:36:35,597 INFO L93 Difference]: Finished difference Result 373 states and 542 transitions. [2022-07-19 17:36:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:36:35,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-07-19 17:36:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:36:35,601 INFO L225 Difference]: With dead ends: 373 [2022-07-19 17:36:35,601 INFO L226 Difference]: Without dead ends: 233 [2022-07-19 17:36:35,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=62, Invalid=216, Unknown=2, NotChecked=62, Total=342 [2022-07-19 17:36:35,603 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 84 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:36:35,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1036 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 270 Unchecked, 5.3s Time] [2022-07-19 17:36:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-19 17:36:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 224. [2022-07-19 17:36:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 161 states have (on average 1.329192546583851) internal successors, (214), 169 states have internal predecessors, (214), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (61), 35 states have call predecessors, (61), 38 states have call successors, (61) [2022-07-19 17:36:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 317 transitions. [2022-07-19 17:36:35,628 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 317 transitions. Word has length 36 [2022-07-19 17:36:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:36:35,629 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 317 transitions. [2022-07-19 17:36:35,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:36:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 317 transitions. [2022-07-19 17:36:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 17:36:35,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:36:35,635 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:36:35,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:36:35,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:36:35,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:36:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:36:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2005278688, now seen corresponding path program 1 times [2022-07-19 17:36:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:36:35,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156430764] [2022-07-19 17:36:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:36:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:36:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:36:35,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:36:35,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 17:36:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:36:36,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 17:36:36,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:36:36,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:36:36,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-19 17:36:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:36,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:36:36,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:36:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156430764] [2022-07-19 17:36:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156430764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:36:36,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:36:36,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:36:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856682347] [2022-07-19 17:36:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:36:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:36:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:36:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:36:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:36:36,205 INFO L87 Difference]: Start difference. First operand 224 states and 317 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:36:38,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:36:46,089 INFO L93 Difference]: Finished difference Result 444 states and 630 transitions. [2022-07-19 17:36:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:36:46,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-19 17:36:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:36:46,092 INFO L225 Difference]: With dead ends: 444 [2022-07-19 17:36:46,092 INFO L226 Difference]: Without dead ends: 230 [2022-07-19 17:36:46,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:36:46,094 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 19 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:36:46,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 860 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-07-19 17:36:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-19 17:36:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2022-07-19 17:36:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 164 states have (on average 1.3231707317073171) internal successors, (217), 171 states have internal predecessors, (217), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (61), 35 states have call predecessors, (61), 38 states have call successors, (61) [2022-07-19 17:36:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2022-07-19 17:36:46,114 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 38 [2022-07-19 17:36:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:36:46,115 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2022-07-19 17:36:46,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:36:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2022-07-19 17:36:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 17:36:46,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:36:46,116 INFO L195 NwaCegarLoop]: trace histogram [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 17:36:46,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-19 17:36:46,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:36:46,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:36:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:36:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash -773790690, now seen corresponding path program 1 times [2022-07-19 17:36:46,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:36:46,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736894888] [2022-07-19 17:36:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:36:46,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:36:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:36:46,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:36:46,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 17:36:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:36:46,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 17:36:46,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:36:46,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:36:46,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 17:36:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:46,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:36:46,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:36:46,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736894888] [2022-07-19 17:36:46,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736894888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:36:46,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:36:46,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:36:46,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140361776] [2022-07-19 17:36:46,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:36:46,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:36:46,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:36:46,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:36:46,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:36:46,584 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:36:47,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:50,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:36:57,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:36:57,876 INFO L93 Difference]: Finished difference Result 441 states and 654 transitions. [2022-07-19 17:36:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:36:57,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-19 17:36:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:36:57,879 INFO L225 Difference]: With dead ends: 441 [2022-07-19 17:36:57,879 INFO L226 Difference]: Without dead ends: 232 [2022-07-19 17:36:57,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:36:57,881 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 23 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:36:57,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 841 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-07-19 17:36:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-19 17:36:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2022-07-19 17:36:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 172 states have internal predecessors, (217), 42 states have call successors, (42), 21 states have call predecessors, (42), 20 states have return successors, (61), 35 states have call predecessors, (61), 38 states have call successors, (61) [2022-07-19 17:36:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 320 transitions. [2022-07-19 17:36:57,898 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 320 transitions. Word has length 38 [2022-07-19 17:36:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:36:57,898 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 320 transitions. [2022-07-19 17:36:57,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:36:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 320 transitions. [2022-07-19 17:36:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 17:36:57,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:36:57,900 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:36:57,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-19 17:36:58,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:36:58,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:36:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:36:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1418952031, now seen corresponding path program 1 times [2022-07-19 17:36:58,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:36:58,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737255401] [2022-07-19 17:36:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:36:58,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:36:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:36:58,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:36:58,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-19 17:36:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:36:58,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 17:36:58,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:36:58,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:36:58,474 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-19 17:36:58,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-19 17:36:58,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:36:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:36:58,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:37:00,582 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-07-19 17:37:02,592 WARN L833 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| (_ BitVec 32))) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) (_ bv0 32) ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-07-19 17:37:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:37:04,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:37:04,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737255401] [2022-07-19 17:37:04,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737255401] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 17:37:04,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:37:04,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-07-19 17:37:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971361946] [2022-07-19 17:37:04,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:37:04,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:37:04,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:37:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:37:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2022-07-19 17:37:04,722 INFO L87 Difference]: Start difference. First operand 229 states and 320 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:37:14,127 WARN L233 SmtUtils]: Spent 9.25s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 17:37:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:37:19,952 INFO L93 Difference]: Finished difference Result 539 states and 775 transitions. [2022-07-19 17:37:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:37:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-07-19 17:37:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:37:19,955 INFO L225 Difference]: With dead ends: 539 [2022-07-19 17:37:19,955 INFO L226 Difference]: Without dead ends: 328 [2022-07-19 17:37:19,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=62, Invalid=216, Unknown=2, NotChecked=62, Total=342 [2022-07-19 17:37:19,956 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 83 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:37:19,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1142 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 151 Invalid, 0 Unknown, 285 Unchecked, 5.9s Time] [2022-07-19 17:37:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-19 17:37:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 307. [2022-07-19 17:37:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 223 states have (on average 1.3004484304932735) internal successors, (290), 233 states have internal predecessors, (290), 53 states have call successors, (53), 30 states have call predecessors, (53), 30 states have return successors, (82), 43 states have call predecessors, (82), 49 states have call successors, (82) [2022-07-19 17:37:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 425 transitions. [2022-07-19 17:37:19,985 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 425 transitions. Word has length 39 [2022-07-19 17:37:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:37:19,985 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 425 transitions. [2022-07-19 17:37:19,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 17:37:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 425 transitions. [2022-07-19 17:37:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 17:37:19,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:37:19,994 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:37:20,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-19 17:37:20,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:37:20,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:37:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:37:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1933562322, now seen corresponding path program 1 times [2022-07-19 17:37:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:37:20,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445547496] [2022-07-19 17:37:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:37:20,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:37:20,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:37:20,210 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:37:20,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-19 17:37:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:37:20,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 17:37:20,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:37:20,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:37:20,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:37:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:37:20,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:37:20,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:37:20,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445547496] [2022-07-19 17:37:20,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445547496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:37:20,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:37:20,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:37:20,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205785164] [2022-07-19 17:37:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:37:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:37:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:37:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:37:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:37:20,557 INFO L87 Difference]: Start difference. First operand 307 states and 425 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:37:24,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:37:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:37:31,824 INFO L93 Difference]: Finished difference Result 584 states and 813 transitions. [2022-07-19 17:37:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:37:31,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-07-19 17:37:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:37:31,827 INFO L225 Difference]: With dead ends: 584 [2022-07-19 17:37:31,827 INFO L226 Difference]: Without dead ends: 302 [2022-07-19 17:37:31,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:37:31,829 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 13 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:37:31,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1006 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-07-19 17:37:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-07-19 17:37:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2022-07-19 17:37:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 218 states have (on average 1.3027522935779816) internal successors, (284), 227 states have internal predecessors, (284), 51 states have call successors, (51), 28 states have call predecessors, (51), 29 states have return successors, (81), 43 states have call predecessors, (81), 48 states have call successors, (81) [2022-07-19 17:37:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 416 transitions. [2022-07-19 17:37:31,842 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 416 transitions. Word has length 39 [2022-07-19 17:37:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:37:31,842 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 416 transitions. [2022-07-19 17:37:31,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:37:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 416 transitions. [2022-07-19 17:37:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 17:37:31,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:37:31,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:37:31,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-19 17:37:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:37:32,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:37:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:37:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1433328391, now seen corresponding path program 1 times [2022-07-19 17:37:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:37:32,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206443254] [2022-07-19 17:37:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:37:32,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:37:32,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:37:32,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:37:32,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-19 17:37:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:37:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 17:37:32,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:37:32,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:37:32,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:37:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:37:32,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:37:32,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:37:32,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206443254] [2022-07-19 17:37:32,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206443254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:37:32,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:37:32,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:37:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34133430] [2022-07-19 17:37:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:37:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:37:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:37:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:37:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:37:32,316 INFO L87 Difference]: Start difference. First operand 299 states and 416 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:37:34,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:37:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:37:44,446 INFO L93 Difference]: Finished difference Result 590 states and 852 transitions. [2022-07-19 17:37:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:37:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2022-07-19 17:37:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:37:44,448 INFO L225 Difference]: With dead ends: 590 [2022-07-19 17:37:44,449 INFO L226 Difference]: Without dead ends: 316 [2022-07-19 17:37:44,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:37:44,450 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 38 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:37:44,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 895 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-07-19 17:37:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-19 17:37:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 305. [2022-07-19 17:37:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 222 states have (on average 1.2972972972972974) internal successors, (288), 231 states have internal predecessors, (288), 52 states have call successors, (52), 29 states have call predecessors, (52), 30 states have return successors, (82), 44 states have call predecessors, (82), 49 states have call successors, (82) [2022-07-19 17:37:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 422 transitions. [2022-07-19 17:37:44,463 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 422 transitions. Word has length 53 [2022-07-19 17:37:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:37:44,464 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 422 transitions. [2022-07-19 17:37:44,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:37:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 422 transitions. [2022-07-19 17:37:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 17:37:44,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:37:44,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:37:44,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-19 17:37:44,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:37:44,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:37:44,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:37:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash -821329833, now seen corresponding path program 1 times [2022-07-19 17:37:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:37:44,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481039183] [2022-07-19 17:37:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:37:44,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:37:44,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:37:44,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:37:44,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-19 17:37:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:37:44,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 17:37:44,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:37:44,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:37:44,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:37:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:37:44,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:37:44,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:37:44,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481039183] [2022-07-19 17:37:44,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481039183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:37:44,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:37:44,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:37:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411136718] [2022-07-19 17:37:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:37:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:37:44,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:37:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:37:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:37:44,956 INFO L87 Difference]: Start difference. First operand 305 states and 422 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:37:50,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:37:50,267 INFO L93 Difference]: Finished difference Result 696 states and 1015 transitions. [2022-07-19 17:37:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:37:50,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2022-07-19 17:37:50,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:37:50,271 INFO L225 Difference]: With dead ends: 696 [2022-07-19 17:37:50,271 INFO L226 Difference]: Without dead ends: 416 [2022-07-19 17:37:50,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:37:50,273 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 107 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:37:50,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1231 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 17:37:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-19 17:37:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 403. [2022-07-19 17:37:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 297 states have (on average 1.2558922558922558) internal successors, (373), 299 states have internal predecessors, (373), 62 states have call successors, (62), 33 states have call predecessors, (62), 43 states have return successors, (129), 70 states have call predecessors, (129), 59 states have call successors, (129) [2022-07-19 17:37:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 564 transitions. [2022-07-19 17:37:50,301 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 564 transitions. Word has length 54 [2022-07-19 17:37:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:37:50,301 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 564 transitions. [2022-07-19 17:37:50,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 17:37:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 564 transitions. [2022-07-19 17:37:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 17:37:50,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:37:50,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 17:37:50,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-19 17:37:50,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:37:50,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:37:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:37:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash 686221976, now seen corresponding path program 1 times [2022-07-19 17:37:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:37:50,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536800658] [2022-07-19 17:37:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:37:50,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:37:50,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:37:50,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:37:50,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-19 17:37:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:37:50,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 17:37:50,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:37:50,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 17:37:50,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 17:37:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:37:50,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:37:50,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:37:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536800658] [2022-07-19 17:37:50,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536800658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:37:50,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:37:50,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:37:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344604951] [2022-07-19 17:37:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:37:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:37:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:37:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:37:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:37:50,825 INFO L87 Difference]: Start difference. First operand 403 states and 564 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:38:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:38:04,639 INFO L93 Difference]: Finished difference Result 951 states and 1451 transitions. [2022-07-19 17:38:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 17:38:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 54 [2022-07-19 17:38:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:38:04,644 INFO L225 Difference]: With dead ends: 951 [2022-07-19 17:38:04,644 INFO L226 Difference]: Without dead ends: 573 [2022-07-19 17:38:04,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-07-19 17:38:04,646 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 192 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:38:04,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 899 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-07-19 17:38:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-07-19 17:38:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 541. [2022-07-19 17:38:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 403 states have (on average 1.2133995037220844) internal successors, (489), 396 states have internal predecessors, (489), 70 states have call successors, (70), 38 states have call predecessors, (70), 67 states have return successors, (225), 106 states have call predecessors, (225), 67 states have call successors, (225) [2022-07-19 17:38:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 784 transitions. [2022-07-19 17:38:04,669 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 784 transitions. Word has length 54 [2022-07-19 17:38:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:38:04,670 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 784 transitions. [2022-07-19 17:38:04,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:38:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 784 transitions. [2022-07-19 17:38:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 17:38:04,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:38:04,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:38:04,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-19 17:38:04,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 17:38:04,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:38:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:38:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1318935550, now seen corresponding path program 1 times [2022-07-19 17:38:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 17:38:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593167026] [2022-07-19 17:38:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:38:04,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 17:38:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 17:38:04,886 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 17:38:04,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-19 17:38:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:05,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 17:38:05,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:38:05,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 17:38:05,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-19 17:38:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:38:05,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:38:05,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 17:38:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593167026] [2022-07-19 17:38:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593167026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:38:05,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:38:05,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:38:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585487176] [2022-07-19 17:38:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:38:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:38:05,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 17:38:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:38:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:38:05,221 INFO L87 Difference]: Start difference. First operand 541 states and 784 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 17:38:06,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 17:38:08,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []