./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-f4b24e3 [2022-07-13 18:09:29,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:09:29,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:09:29,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:09:29,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:09:29,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:09:29,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:09:29,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:09:29,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:09:29,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:09:29,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:09:29,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:09:29,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:09:29,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:09:29,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:09:29,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:09:29,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:09:29,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:09:29,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:09:29,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:09:29,670 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:09:29,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:09:29,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:09:29,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:09:29,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:09:29,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:09:29,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:09:29,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:09:29,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:09:29,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:09:29,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:09:29,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:09:29,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:09:29,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:09:29,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:09:29,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:09:29,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:09:29,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:09:29,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:09:29,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:09:29,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:09:29,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:09:29,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:09:29,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:09:29,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:09:29,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:09:29,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:09:29,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:09:29,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:09:29,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:09:29,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:09:29,728 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:09:29,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:09:29,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:09:29,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:09:29,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:09:29,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:09:29,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:09:29,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:09:29,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:09:29,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:09:29,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:09:29,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2022-07-13 18:09:29,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:09:29,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:09:29,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:09:29,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:09:29,985 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:09:29,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-13 18:09:30,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b730485/bda4f57f270a49dab5cc1f401de2c6d9/FLAGa1fbd4781 [2022-07-13 18:09:30,478 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:09:30,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-13 18:09:30,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b730485/bda4f57f270a49dab5cc1f401de2c6d9/FLAGa1fbd4781 [2022-07-13 18:09:30,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b730485/bda4f57f270a49dab5cc1f401de2c6d9 [2022-07-13 18:09:30,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:09:30,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:09:30,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:09:30,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:09:30,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:09:30,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:09:30" (1/1) ... [2022-07-13 18:09:30,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bf86b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:30, skipping insertion in model container [2022-07-13 18:09:30,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:09:30" (1/1) ... [2022-07-13 18:09:30,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:09:30,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:09:30,986 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] [2022-07-13 18:09:31,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:09:31,016 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:09:31,058 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] [2022-07-13 18:09:31,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:09:31,101 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:09:31,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31 WrapperNode [2022-07-13 18:09:31,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:09:31,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:09:31,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:09:31,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:09:31,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,168 INFO L137 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2022-07-13 18:09:31,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:09:31,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:09:31,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:09:31,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:09:31,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:09:31,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:09:31,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:09:31,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:09:31,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (1/1) ... [2022-07-13 18:09:31,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:09:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:09:31,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:09:31,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:09:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 18:09:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-13 18:09:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-13 18:09:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-07-13 18:09:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-07-13 18:09:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:09:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-07-13 18:09:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-07-13 18:09:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-07-13 18:09:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-07-13 18:09:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-07-13 18:09:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-07-13 18:09:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 18:09:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-07-13 18:09:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-07-13 18:09:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:09:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-07-13 18:09:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-07-13 18:09:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:09:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-07-13 18:09:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-07-13 18:09:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-13 18:09:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:09:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:09:31,453 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:09:31,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:09:32,063 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:09:32,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:09:32,070 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:09:32,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:09:32 BoogieIcfgContainer [2022-07-13 18:09:32,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:09:32,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:09:32,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:09:32,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:09:32,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:09:30" (1/3) ... [2022-07-13 18:09:32,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1790d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:09:32, skipping insertion in model container [2022-07-13 18:09:32,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:09:31" (2/3) ... [2022-07-13 18:09:32,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1790d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:09:32, skipping insertion in model container [2022-07-13 18:09:32,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:09:32" (3/3) ... [2022-07-13 18:09:32,080 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-07-13 18:09:32,094 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:09:32,094 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:09:32,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:09:32,141 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@13fc01c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cb00455 [2022-07-13 18:09:32,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:09:32,146 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) [2022-07-13 18:09:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 18:09:32,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:32,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:09:32,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:32,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:32,159 INFO L85 PathProgramCache]: Analyzing trace with hash -965536278, now seen corresponding path program 1 times [2022-07-13 18:09:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:32,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046743249] [2022-07-13 18:09:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:32,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:32,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:32,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046743249] [2022-07-13 18:09:32,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046743249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:32,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:32,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:09:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486284304] [2022-07-13 18:09:32,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:32,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:09:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:09:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:09:32,727 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) [2022-07-13 18:09:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:33,782 INFO L93 Difference]: Finished difference Result 319 states and 468 transitions. [2022-07-13 18:09:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:09:33,785 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 [2022-07-13 18:09:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:33,816 INFO L225 Difference]: With dead ends: 319 [2022-07-13 18:09:33,816 INFO L226 Difference]: Without dead ends: 169 [2022-07-13 18:09:33,821 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 [2022-07-13 18:09:33,830 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 [2022-07-13 18:09:33,831 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] [2022-07-13 18:09:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-13 18:09:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 133. [2022-07-13 18:09:33,902 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) [2022-07-13 18:09:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-07-13 18:09:33,907 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 19 [2022-07-13 18:09:33,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:33,907 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-07-13 18:09:33,908 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) [2022-07-13 18:09:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-07-13 18:09:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 18:09:33,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:33,917 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] [2022-07-13 18:09:33,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:09:33,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:33,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1463372220, now seen corresponding path program 1 times [2022-07-13 18:09:33,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:33,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34395495] [2022-07-13 18:09:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:33,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:34,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34395495] [2022-07-13 18:09:34,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34395495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:34,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:34,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:09:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399063838] [2022-07-13 18:09:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:09:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:09:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:09:34,131 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) [2022-07-13 18:09:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:34,605 INFO L93 Difference]: Finished difference Result 293 states and 423 transitions. [2022-07-13 18:09:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:09:34,606 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 [2022-07-13 18:09:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:34,609 INFO L225 Difference]: With dead ends: 293 [2022-07-13 18:09:34,609 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 18:09:34,611 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 [2022-07-13 18:09:34,612 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 160 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-13 18:09:34,613 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] [2022-07-13 18:09:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 18:09:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2022-07-13 18:09:34,626 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) [2022-07-13 18:09:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2022-07-13 18:09:34,627 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 35 [2022-07-13 18:09:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:34,628 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2022-07-13 18:09:34,628 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) [2022-07-13 18:09:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2022-07-13 18:09:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 18:09:34,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:34,630 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] [2022-07-13 18:09:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:09:34,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1541012852, now seen corresponding path program 1 times [2022-07-13 18:09:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366418719] [2022-07-13 18:09:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:34,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366418719] [2022-07-13 18:09:34,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366418719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:34,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:34,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:09:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202060932] [2022-07-13 18:09:34,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:09:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:09:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:34,776 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) [2022-07-13 18:09:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:35,931 INFO L93 Difference]: Finished difference Result 339 states and 497 transitions. [2022-07-13 18:09:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:09:35,931 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 [2022-07-13 18:09:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:35,934 INFO L225 Difference]: With dead ends: 339 [2022-07-13 18:09:35,934 INFO L226 Difference]: Without dead ends: 216 [2022-07-13 18:09:35,936 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 [2022-07-13 18:09:35,937 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 [2022-07-13 18:09:35,938 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] [2022-07-13 18:09:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-13 18:09:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 208. [2022-07-13 18:09:35,957 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) [2022-07-13 18:09:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-13 18:09:35,959 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 36 [2022-07-13 18:09:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:35,960 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-13 18:09:35,960 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) [2022-07-13 18:09:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-13 18:09:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 18:09:35,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:35,962 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] [2022-07-13 18:09:35,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:09:35,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1282847414, now seen corresponding path program 1 times [2022-07-13 18:09:35,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:35,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429543225] [2022-07-13 18:09:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:35,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:36,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:36,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429543225] [2022-07-13 18:09:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429543225] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:09:36,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36651884] [2022-07-13 18:09:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:36,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:09:36,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:09:36,287 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) [2022-07-13 18:09:36,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:09:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:36,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 18:09:36,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:09:36,593 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 [2022-07-13 18:09:36,683 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-13 18:09:36,684 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 [2022-07-13 18:09:36,733 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 18:09:36,734 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 [2022-07-13 18:09:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:36,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:09:37,605 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 [2022-07-13 18:09:39,614 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 [2022-07-13 18:09:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:42,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36651884] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 18:09:42,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 18:09:42,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 11] total 26 [2022-07-13 18:09:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297352432] [2022-07-13 18:09:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:09:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:09:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=453, Unknown=3, NotChecked=90, Total=650 [2022-07-13 18:09:42,940 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) [2022-07-13 18:09:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:48,331 INFO L93 Difference]: Finished difference Result 439 states and 658 transitions. [2022-07-13 18:09:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:09:48,332 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 [2022-07-13 18:09:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:48,334 INFO L225 Difference]: With dead ends: 439 [2022-07-13 18:09:48,335 INFO L226 Difference]: Without dead ends: 246 [2022-07-13 18:09:48,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=125, Invalid=635, Unknown=4, NotChecked=106, Total=870 [2022-07-13 18:09:48,337 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 35 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-13 18:09:48,338 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] [2022-07-13 18:09:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-13 18:09:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2022-07-13 18:09:48,357 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) [2022-07-13 18:09:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 344 transitions. [2022-07-13 18:09:48,360 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 344 transitions. Word has length 36 [2022-07-13 18:09:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:48,360 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 344 transitions. [2022-07-13 18:09:48,361 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) [2022-07-13 18:09:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 344 transitions. [2022-07-13 18:09:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 18:09:48,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:48,363 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] [2022-07-13 18:09:48,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:09:48,563 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 [2022-07-13 18:09:48,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2015047529, now seen corresponding path program 1 times [2022-07-13 18:09:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895151837] [2022-07-13 18:09:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:48,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:48,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895151837] [2022-07-13 18:09:48,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895151837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:48,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:48,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:09:48,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11912710] [2022-07-13 18:09:48,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:48,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:09:48,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:48,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:09:48,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:48,750 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) [2022-07-13 18:09:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:50,527 INFO L93 Difference]: Finished difference Result 624 states and 972 transitions. [2022-07-13 18:09:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:09:50,528 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 [2022-07-13 18:09:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:50,536 INFO L225 Difference]: With dead ends: 624 [2022-07-13 18:09:50,536 INFO L226 Difference]: Without dead ends: 400 [2022-07-13 18:09:50,539 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 [2022-07-13 18:09:50,547 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 292 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:50,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1083 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 18:09:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-13 18:09:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 367. [2022-07-13 18:09:50,606 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) [2022-07-13 18:09:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 549 transitions. [2022-07-13 18:09:50,610 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 549 transitions. Word has length 36 [2022-07-13 18:09:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:50,611 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 549 transitions. [2022-07-13 18:09:50,611 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) [2022-07-13 18:09:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 549 transitions. [2022-07-13 18:09:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 18:09:50,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:50,613 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] [2022-07-13 18:09:50,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:09:50,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2005278688, now seen corresponding path program 1 times [2022-07-13 18:09:50,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:50,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210038996] [2022-07-13 18:09:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:50,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 18:09:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 18:09:50,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:50,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210038996] [2022-07-13 18:09:50,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210038996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:50,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:50,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:09:50,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490322752] [2022-07-13 18:09:50,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:50,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:09:50,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:50,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:09:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:09:50,832 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) [2022-07-13 18:09:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:51,685 INFO L93 Difference]: Finished difference Result 743 states and 1107 transitions. [2022-07-13 18:09:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:09:51,686 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 [2022-07-13 18:09:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:51,689 INFO L225 Difference]: With dead ends: 743 [2022-07-13 18:09:51,689 INFO L226 Difference]: Without dead ends: 386 [2022-07-13 18:09:51,691 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 [2022-07-13 18:09:51,692 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 108 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:51,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 804 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:09:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-13 18:09:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 370. [2022-07-13 18:09:51,713 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) [2022-07-13 18:09:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 552 transitions. [2022-07-13 18:09:51,717 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 552 transitions. Word has length 38 [2022-07-13 18:09:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:51,717 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 552 transitions. [2022-07-13 18:09:51,717 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) [2022-07-13 18:09:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 552 transitions. [2022-07-13 18:09:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 18:09:51,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:51,719 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] [2022-07-13 18:09:51,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:09:51,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash -773790690, now seen corresponding path program 1 times [2022-07-13 18:09:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:51,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669058932] [2022-07-13 18:09:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:51,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:51,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:09:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:51,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669058932] [2022-07-13 18:09:51,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669058932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:51,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:51,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:09:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344086474] [2022-07-13 18:09:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:51,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:09:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:09:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:51,941 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) [2022-07-13 18:09:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:52,775 INFO L93 Difference]: Finished difference Result 762 states and 1129 transitions. [2022-07-13 18:09:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:09:52,776 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 [2022-07-13 18:09:52,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:52,779 INFO L225 Difference]: With dead ends: 762 [2022-07-13 18:09:52,779 INFO L226 Difference]: Without dead ends: 390 [2022-07-13 18:09:52,781 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 [2022-07-13 18:09:52,782 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:52,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 979 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:09:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-13 18:09:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2022-07-13 18:09:52,804 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) [2022-07-13 18:09:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 558 transitions. [2022-07-13 18:09:52,808 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 558 transitions. Word has length 38 [2022-07-13 18:09:52,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:52,810 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 558 transitions. [2022-07-13 18:09:52,810 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) [2022-07-13 18:09:52,810 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 558 transitions. [2022-07-13 18:09:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 18:09:52,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:52,816 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] [2022-07-13 18:09:52,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:09:52,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1418952031, now seen corresponding path program 1 times [2022-07-13 18:09:52,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:52,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547208003] [2022-07-13 18:09:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:52,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:09:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:09:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:52,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547208003] [2022-07-13 18:09:52,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547208003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:52,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:09:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256451344] [2022-07-13 18:09:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:09:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:09:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:52,986 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) [2022-07-13 18:09:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:54,004 INFO L93 Difference]: Finished difference Result 754 states and 1117 transitions. [2022-07-13 18:09:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:09:54,004 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 [2022-07-13 18:09:54,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:54,007 INFO L225 Difference]: With dead ends: 754 [2022-07-13 18:09:54,008 INFO L226 Difference]: Without dead ends: 385 [2022-07-13 18:09:54,010 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 [2022-07-13 18:09:54,010 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 354 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:54,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 618 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:09:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-13 18:09:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 367. [2022-07-13 18:09:54,033 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) [2022-07-13 18:09:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 548 transitions. [2022-07-13 18:09:54,036 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 548 transitions. Word has length 39 [2022-07-13 18:09:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:54,036 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 548 transitions. [2022-07-13 18:09:54,036 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) [2022-07-13 18:09:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 548 transitions. [2022-07-13 18:09:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:09:54,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:54,038 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] [2022-07-13 18:09:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:09:54,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1936715933, now seen corresponding path program 1 times [2022-07-13 18:09:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442101474] [2022-07-13 18:09:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:54,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 18:09:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:09:54,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:54,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442101474] [2022-07-13 18:09:54,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442101474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:54,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:54,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:09:54,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645853671] [2022-07-13 18:09:54,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:54,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:09:54,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:09:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:09:54,167 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) [2022-07-13 18:09:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:54,661 INFO L93 Difference]: Finished difference Result 744 states and 1229 transitions. [2022-07-13 18:09:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:09:54,661 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 [2022-07-13 18:09:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:54,665 INFO L225 Difference]: With dead ends: 744 [2022-07-13 18:09:54,665 INFO L226 Difference]: Without dead ends: 392 [2022-07-13 18:09:54,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:54,669 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 169 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-07-13 18:09:54,669 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] [2022-07-13 18:09:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-13 18:09:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 379. [2022-07-13 18:09:54,691 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) [2022-07-13 18:09:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 561 transitions. [2022-07-13 18:09:54,694 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 561 transitions. Word has length 53 [2022-07-13 18:09:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:54,695 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 561 transitions. [2022-07-13 18:09:54,695 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) [2022-07-13 18:09:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 561 transitions. [2022-07-13 18:09:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 18:09:54,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:54,697 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] [2022-07-13 18:09:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:09:54,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash -821329833, now seen corresponding path program 1 times [2022-07-13 18:09:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:54,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588509409] [2022-07-13 18:09:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 18:09:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:09:54,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:54,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588509409] [2022-07-13 18:09:54,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588509409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:54,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:54,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:09:54,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737440959] [2022-07-13 18:09:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:54,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:09:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:09:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:09:54,866 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) [2022-07-13 18:09:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:55,800 INFO L93 Difference]: Finished difference Result 891 states and 1443 transitions. [2022-07-13 18:09:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:09:55,800 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 [2022-07-13 18:09:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:55,805 INFO L225 Difference]: With dead ends: 891 [2022-07-13 18:09:55,806 INFO L226 Difference]: Without dead ends: 527 [2022-07-13 18:09:55,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:09:55,810 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 254 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:55,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1131 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:09:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-13 18:09:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 488. [2022-07-13 18:09:55,837 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) [2022-07-13 18:09:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 734 transitions. [2022-07-13 18:09:55,840 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 734 transitions. Word has length 54 [2022-07-13 18:09:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 734 transitions. [2022-07-13 18:09:55,841 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) [2022-07-13 18:09:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 734 transitions. [2022-07-13 18:09:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 18:09:55,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:55,843 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] [2022-07-13 18:09:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:09:55,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash 686221976, now seen corresponding path program 1 times [2022-07-13 18:09:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:55,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9593180] [2022-07-13 18:09:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:55,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 18:09:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:09:56,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:56,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9593180] [2022-07-13 18:09:56,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9593180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:56,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:56,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:09:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638602025] [2022-07-13 18:09:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:09:56,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:09:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:56,035 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) [2022-07-13 18:09:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:57,369 INFO L93 Difference]: Finished difference Result 1109 states and 1933 transitions. [2022-07-13 18:09:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 18:09:57,369 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 [2022-07-13 18:09:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:57,375 INFO L225 Difference]: With dead ends: 1109 [2022-07-13 18:09:57,375 INFO L226 Difference]: Without dead ends: 632 [2022-07-13 18:09:57,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-07-13 18:09:57,380 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 336 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:57,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 904 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:09:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-13 18:09:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-07-13 18:09:57,415 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) [2022-07-13 18:09:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 934 transitions. [2022-07-13 18:09:57,419 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 934 transitions. Word has length 54 [2022-07-13 18:09:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:57,419 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 934 transitions. [2022-07-13 18:09:57,420 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) [2022-07-13 18:09:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 934 transitions. [2022-07-13 18:09:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:09:57,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:57,422 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] [2022-07-13 18:09:57,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:09:57,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:57,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2020535424, now seen corresponding path program 1 times [2022-07-13 18:09:57,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:57,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996175344] [2022-07-13 18:09:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:57,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:09:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:09:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996175344] [2022-07-13 18:09:57,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996175344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:57,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:57,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:09:57,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619818695] [2022-07-13 18:09:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:57,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:09:57,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:09:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:09:57,593 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) [2022-07-13 18:09:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:58,734 INFO L93 Difference]: Finished difference Result 1233 states and 2204 transitions. [2022-07-13 18:09:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:09:58,735 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 [2022-07-13 18:09:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:58,741 INFO L225 Difference]: With dead ends: 1233 [2022-07-13 18:09:58,741 INFO L226 Difference]: Without dead ends: 666 [2022-07-13 18:09:58,745 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 [2022-07-13 18:09:58,746 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 124 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:58,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1182 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:09:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-13 18:09:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 641. [2022-07-13 18:09:58,781 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) [2022-07-13 18:09:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1022 transitions. [2022-07-13 18:09:58,785 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1022 transitions. Word has length 55 [2022-07-13 18:09:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:58,786 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1022 transitions. [2022-07-13 18:09:58,786 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) [2022-07-13 18:09:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1022 transitions. [2022-07-13 18:09:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:09:58,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:58,788 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] [2022-07-13 18:09:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:09:58,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -758533954, now seen corresponding path program 1 times [2022-07-13 18:09:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:58,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251567794] [2022-07-13 18:09:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:58,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:09:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:09:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:09:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:09:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:09:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:09:58,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:09:58,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251567794] [2022-07-13 18:09:58,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251567794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:09:58,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:09:58,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:09:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870014951] [2022-07-13 18:09:58,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:09:58,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:09:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:09:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:09:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:09:58,942 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) [2022-07-13 18:09:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:09:59,903 INFO L93 Difference]: Finished difference Result 1619 states and 2966 transitions. [2022-07-13 18:09:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:09:59,904 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 [2022-07-13 18:09:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:09:59,913 INFO L225 Difference]: With dead ends: 1619 [2022-07-13 18:09:59,914 INFO L226 Difference]: Without dead ends: 996 [2022-07-13 18:09:59,919 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 [2022-07-13 18:09:59,920 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 284 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:09:59,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1140 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:09:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-07-13 18:09:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 959. [2022-07-13 18:09:59,978 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) [2022-07-13 18:09:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1599 transitions. [2022-07-13 18:09:59,984 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1599 transitions. Word has length 55 [2022-07-13 18:09:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:09:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1599 transitions. [2022-07-13 18:09:59,985 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) [2022-07-13 18:09:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1599 transitions. [2022-07-13 18:09:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:09:59,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:09:59,987 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] [2022-07-13 18:09:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:09:59,988 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:09:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:09:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash 47417981, now seen corresponding path program 1 times [2022-07-13 18:09:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:09:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207482763] [2022-07-13 18:09:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:09:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:00,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 18:10:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 18:10:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207482763] [2022-07-13 18:10:00,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207482763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:00,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:00,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:10:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403362068] [2022-07-13 18:10:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:00,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:10:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:10:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:10:00,097 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) [2022-07-13 18:10:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:01,107 INFO L93 Difference]: Finished difference Result 2005 states and 3867 transitions. [2022-07-13 18:10:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:10:01,108 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 [2022-07-13 18:10:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:01,118 INFO L225 Difference]: With dead ends: 2005 [2022-07-13 18:10:01,118 INFO L226 Difference]: Without dead ends: 1064 [2022-07-13 18:10:01,126 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 [2022-07-13 18:10:01,127 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 283 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:01,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 988 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:10:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-07-13 18:10:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1011. [2022-07-13 18:10:01,201 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) [2022-07-13 18:10:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1651 transitions. [2022-07-13 18:10:01,207 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1651 transitions. Word has length 55 [2022-07-13 18:10:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:01,207 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1651 transitions. [2022-07-13 18:10:01,207 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) [2022-07-13 18:10:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1651 transitions. [2022-07-13 18:10:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 18:10:01,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:01,209 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] [2022-07-13 18:10:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:10:01,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2077142114, now seen corresponding path program 1 times [2022-07-13 18:10:01,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722718657] [2022-07-13 18:10:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:10:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 18:10:01,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:01,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722718657] [2022-07-13 18:10:01,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722718657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:01,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:01,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:10:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085058401] [2022-07-13 18:10:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:10:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:10:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:10:01,361 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) [2022-07-13 18:10:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:02,114 INFO L93 Difference]: Finished difference Result 2001 states and 3742 transitions. [2022-07-13 18:10:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:10:02,115 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 [2022-07-13 18:10:02,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:02,124 INFO L225 Difference]: With dead ends: 2001 [2022-07-13 18:10:02,125 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 18:10:02,132 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 [2022-07-13 18:10:02,132 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 [2022-07-13 18:10:02,133 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] [2022-07-13 18:10:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 18:10:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 984. [2022-07-13 18:10:02,187 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) [2022-07-13 18:10:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1591 transitions. [2022-07-13 18:10:02,193 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1591 transitions. Word has length 56 [2022-07-13 18:10:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:02,193 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1591 transitions. [2022-07-13 18:10:02,193 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) [2022-07-13 18:10:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1591 transitions. [2022-07-13 18:10:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 18:10:02,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:02,195 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] [2022-07-13 18:10:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:10:02,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:02,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1561977805, now seen corresponding path program 1 times [2022-07-13 18:10:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349671648] [2022-07-13 18:10:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 18:10:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:10:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:02,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349671648] [2022-07-13 18:10:02,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349671648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:02,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:02,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:10:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180394159] [2022-07-13 18:10:02,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:10:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:10:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:10:02,349 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) [2022-07-13 18:10:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:02,888 INFO L93 Difference]: Finished difference Result 1996 states and 3804 transitions. [2022-07-13 18:10:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:10:02,888 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 [2022-07-13 18:10:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:02,898 INFO L225 Difference]: With dead ends: 1996 [2022-07-13 18:10:02,898 INFO L226 Difference]: Without dead ends: 1030 [2022-07-13 18:10:02,905 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 [2022-07-13 18:10:02,906 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 [2022-07-13 18:10:02,906 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] [2022-07-13 18:10:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-13 18:10:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 988. [2022-07-13 18:10:02,970 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) [2022-07-13 18:10:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1597 transitions. [2022-07-13 18:10:02,976 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1597 transitions. Word has length 59 [2022-07-13 18:10:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:02,976 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1597 transitions. [2022-07-13 18:10:02,976 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) [2022-07-13 18:10:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1597 transitions. [2022-07-13 18:10:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 18:10:02,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:02,978 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] [2022-07-13 18:10:02,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:10:02,979 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:02,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:02,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1151067067, now seen corresponding path program 1 times [2022-07-13 18:10:02,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:02,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849673805] [2022-07-13 18:10:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:02,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:10:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:10:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 18:10:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849673805] [2022-07-13 18:10:03,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849673805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:03,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:10:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308006845] [2022-07-13 18:10:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:03,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:10:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:10:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:10:03,134 INFO L87 Difference]: Start difference. First operand 988 states and 1597 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 18:10:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:04,165 INFO L93 Difference]: Finished difference Result 2039 states and 3919 transitions. [2022-07-13 18:10:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:10:04,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-07-13 18:10:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:04,176 INFO L225 Difference]: With dead ends: 2039 [2022-07-13 18:10:04,176 INFO L226 Difference]: Without dead ends: 1069 [2022-07-13 18:10:04,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:10:04,185 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 182 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:04,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 840 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:10:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-07-13 18:10:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 954. [2022-07-13 18:10:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 722 states have (on average 1.1994459833795015) internal successors, (866), 693 states have internal predecessors, (866), 101 states have call successors, (101), 56 states have call predecessors, (101), 130 states have return successors, (573), 204 states have call predecessors, (573), 99 states have call successors, (573) [2022-07-13 18:10:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1540 transitions. [2022-07-13 18:10:04,263 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1540 transitions. Word has length 60 [2022-07-13 18:10:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:04,263 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1540 transitions. [2022-07-13 18:10:04,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 18:10:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1540 transitions. [2022-07-13 18:10:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 18:10:04,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:04,267 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] [2022-07-13 18:10:04,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:10:04,268 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash -756700281, now seen corresponding path program 1 times [2022-07-13 18:10:04,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:04,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684140558] [2022-07-13 18:10:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:10:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:10:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:10:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:04,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684140558] [2022-07-13 18:10:04,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684140558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:04,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:04,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:10:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259511014] [2022-07-13 18:10:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:10:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:10:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:10:04,443 INFO L87 Difference]: Start difference. First operand 954 states and 1540 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) [2022-07-13 18:10:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:04,974 INFO L93 Difference]: Finished difference Result 1920 states and 3608 transitions. [2022-07-13 18:10:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:10:04,975 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 [2022-07-13 18:10:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:04,984 INFO L225 Difference]: With dead ends: 1920 [2022-07-13 18:10:04,984 INFO L226 Difference]: Without dead ends: 984 [2022-07-13 18:10:04,993 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 [2022-07-13 18:10:04,993 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 201 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:04,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 609 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:10:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-07-13 18:10:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 956. [2022-07-13 18:10:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 724 states have (on average 1.1988950276243093) internal successors, (868), 694 states have internal predecessors, (868), 101 states have call successors, (101), 56 states have call predecessors, (101), 130 states have return successors, (573), 205 states have call predecessors, (573), 99 states have call successors, (573) [2022-07-13 18:10:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1542 transitions. [2022-07-13 18:10:05,055 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1542 transitions. Word has length 60 [2022-07-13 18:10:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:05,055 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1542 transitions. [2022-07-13 18:10:05,055 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) [2022-07-13 18:10:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1542 transitions. [2022-07-13 18:10:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 18:10:05,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:05,058 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] [2022-07-13 18:10:05,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:10:05,059 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 682002064, now seen corresponding path program 1 times [2022-07-13 18:10:05,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:05,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232311762] [2022-07-13 18:10:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:05,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 18:10:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 18:10:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 18:10:05,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:05,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232311762] [2022-07-13 18:10:05,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232311762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:05,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:05,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:10:05,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541081861] [2022-07-13 18:10:05,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:10:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:10:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:10:05,251 INFO L87 Difference]: Start difference. First operand 956 states and 1542 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) [2022-07-13 18:10:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:06,275 INFO L93 Difference]: Finished difference Result 2007 states and 3938 transitions. [2022-07-13 18:10:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:10:06,284 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 [2022-07-13 18:10:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:06,295 INFO L225 Difference]: With dead ends: 2007 [2022-07-13 18:10:06,295 INFO L226 Difference]: Without dead ends: 1069 [2022-07-13 18:10:06,301 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 [2022-07-13 18:10:06,302 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 110 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:06,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 890 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:10:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-07-13 18:10:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1035. [2022-07-13 18:10:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 784 states have (on average 1.2066326530612246) internal successors, (946), 759 states have internal predecessors, (946), 115 states have call successors, (115), 62 states have call predecessors, (115), 135 states have return successors, (690), 213 states have call predecessors, (690), 113 states have call successors, (690) [2022-07-13 18:10:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1751 transitions. [2022-07-13 18:10:06,374 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1751 transitions. Word has length 65 [2022-07-13 18:10:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:06,375 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1751 transitions. [2022-07-13 18:10:06,375 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) [2022-07-13 18:10:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1751 transitions. [2022-07-13 18:10:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 18:10:06,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:06,377 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] [2022-07-13 18:10:06,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 18:10:06,378 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1397073829, now seen corresponding path program 1 times [2022-07-13 18:10:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:06,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849973649] [2022-07-13 18:10:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:10:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:10:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:10:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849973649] [2022-07-13 18:10:06,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849973649] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450154822] [2022-07-13 18:10:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:06,600 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) [2022-07-13 18:10:06,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 18:10:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:06,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:10:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:06,977 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 [2022-07-13 18:10:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:10:06,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:10:07,073 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 [2022-07-13 18:10:07,099 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 [2022-07-13 18:10:07,122 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 [2022-07-13 18:10:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:10:07,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450154822] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:10:07,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:10:07,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-07-13 18:10:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539771090] [2022-07-13 18:10:07,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:10:07,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 18:10:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 18:10:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:10:07,140 INFO L87 Difference]: Start difference. First operand 1035 states and 1751 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) [2022-07-13 18:10:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:08,128 INFO L93 Difference]: Finished difference Result 2268 states and 4455 transitions. [2022-07-13 18:10:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:10:08,129 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 [2022-07-13 18:10:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:08,144 INFO L225 Difference]: With dead ends: 2268 [2022-07-13 18:10:08,144 INFO L226 Difference]: Without dead ends: 1251 [2022-07-13 18:10:08,150 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 [2022-07-13 18:10:08,151 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 193 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:08,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1029 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:10:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-07-13 18:10:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1209. [2022-07-13 18:10:08,228 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) [2022-07-13 18:10:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 2097 transitions. [2022-07-13 18:10:08,236 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 2097 transitions. Word has length 67 [2022-07-13 18:10:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:08,236 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 2097 transitions. [2022-07-13 18:10:08,237 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) [2022-07-13 18:10:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 2097 transitions. [2022-07-13 18:10:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 18:10:08,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:08,239 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] [2022-07-13 18:10:08,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:08,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-13 18:10:08,464 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:08,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1020751739, now seen corresponding path program 1 times [2022-07-13 18:10:08,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:08,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600579542] [2022-07-13 18:10:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:10:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:10:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 18:10:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:10:08,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:08,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600579542] [2022-07-13 18:10:08,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600579542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:08,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:08,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 18:10:08,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160273749] [2022-07-13 18:10:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:08,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 18:10:08,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:08,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 18:10:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:10:08,714 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) [2022-07-13 18:10:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:09,819 INFO L93 Difference]: Finished difference Result 2504 states and 5137 transitions. [2022-07-13 18:10:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:10:09,820 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 [2022-07-13 18:10:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:09,833 INFO L225 Difference]: With dead ends: 2504 [2022-07-13 18:10:09,833 INFO L226 Difference]: Without dead ends: 1313 [2022-07-13 18:10:09,859 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 [2022-07-13 18:10:09,860 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 183 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:09,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1131 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:10:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-07-13 18:10:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1303. [2022-07-13 18:10:09,958 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) [2022-07-13 18:10:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2287 transitions. [2022-07-13 18:10:09,966 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2287 transitions. Word has length 67 [2022-07-13 18:10:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:09,967 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 2287 transitions. [2022-07-13 18:10:09,967 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) [2022-07-13 18:10:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2287 transitions. [2022-07-13 18:10:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 18:10:09,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:09,973 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] [2022-07-13 18:10:09,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:10:09,973 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash -279030099, now seen corresponding path program 1 times [2022-07-13 18:10:09,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:09,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857531302] [2022-07-13 18:10:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:09,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:10,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:10,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:10,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 18:10:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:10:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:10:10,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857531302] [2022-07-13 18:10:10,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857531302] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765587356] [2022-07-13 18:10:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:10,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:10,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:10,164 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) [2022-07-13 18:10:10,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 18:10:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:10,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 18:10:10,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:10,507 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 [2022-07-13 18:10:10,557 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 [2022-07-13 18:10:10,622 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 [2022-07-13 18:10:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 18:10:10,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:10:10,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765587356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:10,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:10:10,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2022-07-13 18:10:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047747094] [2022-07-13 18:10:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:10,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:10:10,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:10,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:10:10,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:10:10,627 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) [2022-07-13 18:10:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:11,291 INFO L93 Difference]: Finished difference Result 2615 states and 5374 transitions. [2022-07-13 18:10:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:10:11,291 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 [2022-07-13 18:10:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:11,301 INFO L225 Difference]: With dead ends: 2615 [2022-07-13 18:10:11,301 INFO L226 Difference]: Without dead ends: 1326 [2022-07-13 18:10:11,308 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 [2022-07-13 18:10:11,308 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 164 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:11,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 727 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:10:11,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-07-13 18:10:11,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1299. [2022-07-13 18:10:11,388 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) [2022-07-13 18:10:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 2259 transitions. [2022-07-13 18:10:11,395 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 2259 transitions. Word has length 74 [2022-07-13 18:10:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:11,396 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 2259 transitions. [2022-07-13 18:10:11,396 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) [2022-07-13 18:10:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 2259 transitions. [2022-07-13 18:10:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 18:10:11,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:11,400 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] [2022-07-13 18:10:11,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:11,623 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 [2022-07-13 18:10:11,624 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 680855499, now seen corresponding path program 1 times [2022-07-13 18:10:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:11,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530677084] [2022-07-13 18:10:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 18:10:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:10:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:11,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530677084] [2022-07-13 18:10:11,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530677084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:11,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:11,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:10:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057443461] [2022-07-13 18:10:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:11,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:10:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:10:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:10:11,762 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) [2022-07-13 18:10:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:12,910 INFO L93 Difference]: Finished difference Result 2667 states and 5410 transitions. [2022-07-13 18:10:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:10:12,911 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 [2022-07-13 18:10:12,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:12,921 INFO L225 Difference]: With dead ends: 2667 [2022-07-13 18:10:12,922 INFO L226 Difference]: Without dead ends: 1386 [2022-07-13 18:10:12,929 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 [2022-07-13 18:10:12,929 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 219 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:12,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1087 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:10:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2022-07-13 18:10:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1337. [2022-07-13 18:10:13,008 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) [2022-07-13 18:10:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2298 transitions. [2022-07-13 18:10:13,016 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2298 transitions. Word has length 74 [2022-07-13 18:10:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:13,016 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 2298 transitions. [2022-07-13 18:10:13,017 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) [2022-07-13 18:10:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2298 transitions. [2022-07-13 18:10:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:10:13,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:13,021 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] [2022-07-13 18:10:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:10:13,022 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash 238868692, now seen corresponding path program 1 times [2022-07-13 18:10:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:13,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714960078] [2022-07-13 18:10:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 18:10:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 18:10:13,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:13,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714960078] [2022-07-13 18:10:13,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714960078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:13,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:13,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:10:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627447203] [2022-07-13 18:10:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:10:13,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:10:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:10:13,195 INFO L87 Difference]: Start difference. First operand 1337 states and 2298 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 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) [2022-07-13 18:10:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:14,230 INFO L93 Difference]: Finished difference Result 2683 states and 5400 transitions. [2022-07-13 18:10:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:10:14,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 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 [2022-07-13 18:10:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:14,241 INFO L225 Difference]: With dead ends: 2683 [2022-07-13 18:10:14,242 INFO L226 Difference]: Without dead ends: 1364 [2022-07-13 18:10:14,249 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 [2022-07-13 18:10:14,250 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 134 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:14,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 854 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:10:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-07-13 18:10:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1344. [2022-07-13 18:10:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1016 states have (on average 1.1742125984251968) internal successors, (1193), 981 states have internal predecessors, (1193), 132 states have call successors, (132), 70 states have call predecessors, (132), 195 states have return successors, (980), 292 states have call predecessors, (980), 130 states have call successors, (980) [2022-07-13 18:10:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2305 transitions. [2022-07-13 18:10:14,358 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2305 transitions. Word has length 75 [2022-07-13 18:10:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:14,358 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 2305 transitions. [2022-07-13 18:10:14,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 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) [2022-07-13 18:10:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2305 transitions. [2022-07-13 18:10:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:10:14,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:14,365 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:10:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:10:14,366 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1789717418, now seen corresponding path program 1 times [2022-07-13 18:10:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166092906] [2022-07-13 18:10:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 18:10:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:10:14,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:14,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166092906] [2022-07-13 18:10:14,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166092906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:14,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:14,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:10:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411519308] [2022-07-13 18:10:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:14,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:10:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:10:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:10:14,544 INFO L87 Difference]: Start difference. First operand 1344 states and 2305 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) [2022-07-13 18:10:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:15,402 INFO L93 Difference]: Finished difference Result 2662 states and 5343 transitions. [2022-07-13 18:10:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:10:15,403 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 [2022-07-13 18:10:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:15,415 INFO L225 Difference]: With dead ends: 2662 [2022-07-13 18:10:15,415 INFO L226 Difference]: Without dead ends: 1336 [2022-07-13 18:10:15,421 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 [2022-07-13 18:10:15,421 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 179 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:15,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 897 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:10:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-07-13 18:10:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1317. [2022-07-13 18:10:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 999 states have (on average 1.1761761761761762) internal successors, (1175), 964 states have internal predecessors, (1175), 129 states have call successors, (129), 70 states have call predecessors, (129), 188 states have return successors, (955), 282 states have call predecessors, (955), 127 states have call successors, (955) [2022-07-13 18:10:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2259 transitions. [2022-07-13 18:10:15,505 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2259 transitions. Word has length 75 [2022-07-13 18:10:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:15,506 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2259 transitions. [2022-07-13 18:10:15,506 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) [2022-07-13 18:10:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2259 transitions. [2022-07-13 18:10:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:10:15,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:15,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:10:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 18:10:15,528 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1286900698, now seen corresponding path program 1 times [2022-07-13 18:10:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174162142] [2022-07-13 18:10:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:10:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 18:10:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 18:10:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:15,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174162142] [2022-07-13 18:10:15,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174162142] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:15,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789732011] [2022-07-13 18:10:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:15,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:15,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:15,792 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) [2022-07-13 18:10:15,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 18:10:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:16,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 18:10:16,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:16,361 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 27 treesize of output 15 [2022-07-13 18:10:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 18:10:16,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:10:16,464 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 14 [2022-07-13 18:10:16,523 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 14 [2022-07-13 18:10:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 18:10:16,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789732011] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:10:16,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:10:16,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 12 [2022-07-13 18:10:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468610183] [2022-07-13 18:10:16,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:10:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:10:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:10:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:10:16,603 INFO L87 Difference]: Start difference. First operand 1317 states and 2259 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:10:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:18,266 INFO L93 Difference]: Finished difference Result 3291 states and 7118 transitions. [2022-07-13 18:10:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:10:18,266 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 92 [2022-07-13 18:10:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:18,285 INFO L225 Difference]: With dead ends: 3291 [2022-07-13 18:10:18,286 INFO L226 Difference]: Without dead ends: 1992 [2022-07-13 18:10:18,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:10:18,295 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 358 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:18,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1061 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 18:10:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-13 18:10:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1933. [2022-07-13 18:10:18,453 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) [2022-07-13 18:10:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3783 transitions. [2022-07-13 18:10:18,467 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3783 transitions. Word has length 92 [2022-07-13 18:10:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:18,467 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3783 transitions. [2022-07-13 18:10:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:10:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3783 transitions. [2022-07-13 18:10:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:10:18,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:18,472 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] [2022-07-13 18:10:18,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:18,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 18:10:18,700 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash -529991506, now seen corresponding path program 1 times [2022-07-13 18:10:18,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:18,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335038894] [2022-07-13 18:10:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:18,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:10:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:10:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:10:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:10:18,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:18,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335038894] [2022-07-13 18:10:18,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335038894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241845449] [2022-07-13 18:10:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:18,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:18,928 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) [2022-07-13 18:10:18,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 18:10:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:19,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 18:10:19,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:19,405 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 [2022-07-13 18:10:19,431 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 [2022-07-13 18:10:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:10:19,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:10:19,546 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 [2022-07-13 18:10:19,597 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 [2022-07-13 18:10:19,674 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 [2022-07-13 18:10:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 18:10:19,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241845449] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:10:19,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:10:19,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2022-07-13 18:10:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576201708] [2022-07-13 18:10:19,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:10:19,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 18:10:19,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 18:10:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:10:19,687 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) [2022-07-13 18:10:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:21,618 INFO L93 Difference]: Finished difference Result 5000 states and 12826 transitions. [2022-07-13 18:10:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 18:10:21,618 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 [2022-07-13 18:10:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:21,644 INFO L225 Difference]: With dead ends: 5000 [2022-07-13 18:10:21,644 INFO L226 Difference]: Without dead ends: 3085 [2022-07-13 18:10:21,680 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 [2022-07-13 18:10:21,681 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 472 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:21,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1331 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 18:10:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2022-07-13 18:10:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2960. [2022-07-13 18:10:21,908 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) [2022-07-13 18:10:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 7012 transitions. [2022-07-13 18:10:21,934 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 7012 transitions. Word has length 75 [2022-07-13 18:10:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:21,934 INFO L495 AbstractCegarLoop]: Abstraction has 2960 states and 7012 transitions. [2022-07-13 18:10:21,934 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) [2022-07-13 18:10:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 7012 transitions. [2022-07-13 18:10:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 18:10:21,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:21,944 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 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] [2022-07-13 18:10:21,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:22,155 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,SelfDestructingSolverStorable26 [2022-07-13 18:10:22,156 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1776542962, now seen corresponding path program 1 times [2022-07-13 18:10:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:22,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457567073] [2022-07-13 18:10:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:10:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 18:10:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:10:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 18:10:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:10:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 18:10:22,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:22,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457567073] [2022-07-13 18:10:22,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457567073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:22,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:22,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 18:10:22,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689596484] [2022-07-13 18:10:22,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:22,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 18:10:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 18:10:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:10:22,595 INFO L87 Difference]: Start difference. First operand 2960 states and 7012 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 18:10:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:23,808 INFO L93 Difference]: Finished difference Result 5919 states and 17917 transitions. [2022-07-13 18:10:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:10:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 128 [2022-07-13 18:10:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:23,835 INFO L225 Difference]: With dead ends: 5919 [2022-07-13 18:10:23,835 INFO L226 Difference]: Without dead ends: 2968 [2022-07-13 18:10:23,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:10:23,852 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 105 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:23,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 730 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:10:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2022-07-13 18:10:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2951. [2022-07-13 18:10:24,144 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) [2022-07-13 18:10:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 7001 transitions. [2022-07-13 18:10:24,175 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 7001 transitions. Word has length 128 [2022-07-13 18:10:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:24,176 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 7001 transitions. [2022-07-13 18:10:24,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 18:10:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 7001 transitions. [2022-07-13 18:10:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 18:10:24,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:24,207 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:10:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 18:10:24,208 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash -331330261, now seen corresponding path program 1 times [2022-07-13 18:10:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531789318] [2022-07-13 18:10:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:24,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 18:10:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:10:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:10:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 18:10:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:10:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-13 18:10:24,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:24,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531789318] [2022-07-13 18:10:24,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531789318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:24,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97615559] [2022-07-13 18:10:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:24,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:24,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:24,595 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) [2022-07-13 18:10:24,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 18:10:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:25,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 18:10:25,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:25,314 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 [2022-07-13 18:10:26,139 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (v_ArrVal_7324 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6| Int)) (and (= (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_7324)) |c_#memory_int|) (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|))) is different from true [2022-07-13 18:10:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:10:26,190 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 [2022-07-13 18:10:26,224 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 [2022-07-13 18:10:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 1 not checked. [2022-07-13 18:10:26,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:10:26,561 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 [2022-07-13 18:10:26,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:26,797 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 [2022-07-13 18:10:26,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:26,974 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 [2022-07-13 18:10:26,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:27,116 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 [2022-07-13 18:10:27,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:27,222 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 [2022-07-13 18:10:27,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:27,664 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7393 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_7393) c_~user~0.offset))))) is different from false [2022-07-13 18:10:27,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97615559] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:27,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 18:10:27,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-07-13 18:10:27,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293158633] [2022-07-13 18:10:27,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 18:10:27,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 18:10:27,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 18:10:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=234, Unknown=2, NotChecked=62, Total=342 [2022-07-13 18:10:27,667 INFO L87 Difference]: Start difference. First operand 2951 states and 7001 transitions. Second operand has 18 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-13 18:10:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:38,806 INFO L93 Difference]: Finished difference Result 8866 states and 29198 transitions. [2022-07-13 18:10:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 18:10:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 130 [2022-07-13 18:10:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:38,874 INFO L225 Difference]: With dead ends: 8866 [2022-07-13 18:10:38,874 INFO L226 Difference]: Without dead ends: 5933 [2022-07-13 18:10:38,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=216, Invalid=1107, Unknown=17, NotChecked=142, Total=1482 [2022-07-13 18:10:38,909 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 396 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:38,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1565 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1554 Invalid, 0 Unknown, 296 Unchecked, 1.8s Time] [2022-07-13 18:10:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2022-07-13 18:10:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5514. [2022-07-13 18:10:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 4261 states have (on average 1.0875381365876555) internal successors, (4634), 4177 states have internal predecessors, (4634), 270 states have call successors, (270), 166 states have call predecessors, (270), 982 states have return successors, (10561), 1170 states have call predecessors, (10561), 268 states have call successors, (10561) [2022-07-13 18:10:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 15465 transitions. [2022-07-13 18:10:39,659 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 15465 transitions. Word has length 130 [2022-07-13 18:10:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:39,660 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 15465 transitions. [2022-07-13 18:10:39,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-13 18:10:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 15465 transitions. [2022-07-13 18:10:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 18:10:39,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:39,670 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] [2022-07-13 18:10:39,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:39,891 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,SelfDestructingSolverStorable28 [2022-07-13 18:10:39,891 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:39,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -321625164, now seen corresponding path program 1 times [2022-07-13 18:10:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:39,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387147715] [2022-07-13 18:10:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:10:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:10:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:10:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:10:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:40,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387147715] [2022-07-13 18:10:40,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387147715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:40,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:10:40,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 18:10:40,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363675203] [2022-07-13 18:10:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:40,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 18:10:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 18:10:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 18:10:40,121 INFO L87 Difference]: Start difference. First operand 5514 states and 15465 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) [2022-07-13 18:10:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:41,377 INFO L93 Difference]: Finished difference Result 11086 states and 40738 transitions. [2022-07-13 18:10:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:10:41,378 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 [2022-07-13 18:10:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:41,446 INFO L225 Difference]: With dead ends: 11086 [2022-07-13 18:10:41,447 INFO L226 Difference]: Without dead ends: 5581 [2022-07-13 18:10:41,577 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 [2022-07-13 18:10:41,577 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 169 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:41,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 944 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:10:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2022-07-13 18:10:42,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5409. [2022-07-13 18:10:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 4183 states have (on average 1.0889313889552952) internal successors, (4555), 4097 states have internal predecessors, (4555), 267 states have call successors, (267), 165 states have call predecessors, (267), 958 states have return successors, (10514), 1146 states have call predecessors, (10514), 265 states have call successors, (10514) [2022-07-13 18:10:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 15336 transitions. [2022-07-13 18:10:42,185 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 15336 transitions. Word has length 81 [2022-07-13 18:10:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:42,187 INFO L495 AbstractCegarLoop]: Abstraction has 5409 states and 15336 transitions. [2022-07-13 18:10:42,187 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) [2022-07-13 18:10:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 15336 transitions. [2022-07-13 18:10:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 18:10:42,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:42,202 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:10:42,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 18:10:42,202 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1041409815, now seen corresponding path program 1 times [2022-07-13 18:10:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938403433] [2022-07-13 18:10:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:10:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 18:10:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:10:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 18:10:42,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:42,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938403433] [2022-07-13 18:10:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938403433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686050379] [2022-07-13 18:10:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:42,612 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) [2022-07-13 18:10:42,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 18:10:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:43,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 18:10:43,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:43,467 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 [2022-07-13 18:10:44,516 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8617 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_8617)) |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 [2022-07-13 18:10:44,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:10:44,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:10:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:10:44,594 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 [2022-07-13 18:10:44,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:10:44,738 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 18:10:44,738 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 [2022-07-13 18:10:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 2 not checked. [2022-07-13 18:10:44,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:10:44,980 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 [2022-07-13 18:10:44,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:44,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:45,130 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 [2022-07-13 18:10:45,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:45,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:10:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 18:10:48,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686050379] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:10:48,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:10:48,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 24 [2022-07-13 18:10:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365354881] [2022-07-13 18:10:48,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:10:48,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 18:10:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 18:10:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=440, Unknown=1, NotChecked=42, Total=552 [2022-07-13 18:10:48,216 INFO L87 Difference]: Start difference. First operand 5409 states and 15336 transitions. Second operand has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 21 states have internal predecessors, (119), 5 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 18:10:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:55,197 INFO L93 Difference]: Finished difference Result 10935 states and 40986 transitions. [2022-07-13 18:10:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:10:55,198 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 21 states have internal predecessors, (119), 5 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 104 [2022-07-13 18:10:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:55,249 INFO L225 Difference]: With dead ends: 10935 [2022-07-13 18:10:55,249 INFO L226 Difference]: Without dead ends: 5544 [2022-07-13 18:10:55,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=193, Invalid=998, Unknown=3, NotChecked=66, Total=1260 [2022-07-13 18:10:55,285 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 467 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 670 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:55,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1998 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 847 Invalid, 0 Unknown, 670 Unchecked, 1.3s Time] [2022-07-13 18:10:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2022-07-13 18:10:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5399. [2022-07-13 18:10:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 4173 states have (on average 1.087227414330218) internal successors, (4537), 4073 states have internal predecessors, (4537), 265 states have call successors, (265), 163 states have call predecessors, (265), 960 states have return successors, (10644), 1162 states have call predecessors, (10644), 263 states have call successors, (10644) [2022-07-13 18:10:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 15446 transitions. [2022-07-13 18:10:55,879 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 15446 transitions. Word has length 104 [2022-07-13 18:10:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:55,880 INFO L495 AbstractCegarLoop]: Abstraction has 5399 states and 15446 transitions. [2022-07-13 18:10:55,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 21 states have internal predecessors, (119), 5 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 18:10:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 15446 transitions. [2022-07-13 18:10:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:10:55,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:55,978 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] [2022-07-13 18:10:56,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:56,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:56,187 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1568837159, now seen corresponding path program 1 times [2022-07-13 18:10:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:56,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183216530] [2022-07-13 18:10:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 18:10:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:10:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:10:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 18:10:56,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183216530] [2022-07-13 18:10:56,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183216530] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426155674] [2022-07-13 18:10:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:56,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:56,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:56,531 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) [2022-07-13 18:10:56,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 18:10:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:57,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 18:10:57,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:10:57,400 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 [2022-07-13 18:10:57,489 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 [2022-07-13 18:10:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 18:10:57,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:10:57,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426155674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:10:57,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:10:57,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-13 18:10:57,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116073130] [2022-07-13 18:10:57,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:10:57,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:10:57,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:10:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:10:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:10:57,511 INFO L87 Difference]: Start difference. First operand 5399 states and 15446 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) [2022-07-13 18:10:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:10:58,223 INFO L93 Difference]: Finished difference Result 10792 states and 40865 transitions. [2022-07-13 18:10:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:10:58,223 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 [2022-07-13 18:10:58,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:10:58,301 INFO L225 Difference]: With dead ends: 10792 [2022-07-13 18:10:58,301 INFO L226 Difference]: Without dead ends: 5411 [2022-07-13 18:10:58,365 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 [2022-07-13 18:10:58,366 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:10:58,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 962 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:10:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2022-07-13 18:10:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5406. [2022-07-13 18:10:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 4179 states have (on average 1.087341469251017) internal successors, (4544), 4079 states have internal predecessors, (4544), 265 states have call successors, (265), 164 states have call predecessors, (265), 961 states have return successors, (10644), 1162 states have call predecessors, (10644), 263 states have call successors, (10644) [2022-07-13 18:10:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 15453 transitions. [2022-07-13 18:10:59,016 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 15453 transitions. Word has length 105 [2022-07-13 18:10:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:10:59,017 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 15453 transitions. [2022-07-13 18:10:59,017 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) [2022-07-13 18:10:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 15453 transitions. [2022-07-13 18:10:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 18:10:59,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:10:59,022 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:10:59,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 18:10:59,235 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,SelfDestructingSolverStorable31 [2022-07-13 18:10:59,236 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:10:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:10:59,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1454230807, now seen corresponding path program 2 times [2022-07-13 18:10:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:10:59,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328462076] [2022-07-13 18:10:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:10:59,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:10:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:10:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:10:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:10:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:10:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 18:10:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:10:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:10:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:10:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 18:10:59,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:10:59,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328462076] [2022-07-13 18:10:59,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328462076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:10:59,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213980689] [2022-07-13 18:10:59,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 18:10:59,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:10:59,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:10:59,605 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) [2022-07-13 18:10:59,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 18:11:02,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 18:11:02,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:11:02,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 18:11:02,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:11:02,495 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 [2022-07-13 18:11:07,647 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_140| Int) (v_ArrVal_10551 Int) (v_ArrVal_10554 Int) (v_ArrVal_10553 Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139| Int)) (and (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137|) (= (store |c_old(#memory_int)| c_~user~0.base (store (store (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_137|) 0) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138|) v_ArrVal_10551) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139|) v_ArrVal_10553) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_140|) v_ArrVal_10554)) |c_#memory_int|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_139| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_140|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_137| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138|))) is different from true [2022-07-13 18:11:07,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 48 [2022-07-13 18:11:07,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:07,951 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 18:11:07,951 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 [2022-07-13 18:11:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 7 refuted. 3 times theorem prover too weak. 30 trivial. 4 not checked. [2022-07-13 18:11:07,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:11:08,379 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 36 treesize of output 32 [2022-07-13 18:11:08,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,674 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 36 treesize of output 32 [2022-07-13 18:11:08,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:08,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:09,663 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_220| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221| Int) (v_ArrVal_10622 Int) (v_ArrVal_10624 Int) (v_ArrVal_10623 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219| Int) (|v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103| Int)) (or (not (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218|)) (not (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221|)) (not (= ~sys_state_s~0~AS_IDLE (select (store (store (store (store (select |c_#memory_int| c_~user~0.base) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) 0) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_218| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) v_ArrVal_10622) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) v_ArrVal_10623) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_220| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|) v_ArrVal_10624) c_~user~0.offset))) (not (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_219|)) (not (<= (+ c_~user~0.offset 16) |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_103|)) (not (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_221| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_220|)))) is different from false [2022-07-13 18:11:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213980689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:11:09,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 18:11:09,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2022-07-13 18:11:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237212113] [2022-07-13 18:11:09,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 18:11:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 18:11:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:11:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 18:11:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=451, Unknown=5, NotChecked=86, Total=600 [2022-07-13 18:11:09,667 INFO L87 Difference]: Start difference. First operand 5406 states and 15453 transitions. Second operand has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 18:11:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:11:39,206 INFO L93 Difference]: Finished difference Result 10111 states and 37367 transitions. [2022-07-13 18:11:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 18:11:39,207 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2022-07-13 18:11:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:11:39,257 INFO L225 Difference]: With dead ends: 10111 [2022-07-13 18:11:39,257 INFO L226 Difference]: Without dead ends: 4723 [2022-07-13 18:11:39,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=164, Invalid=1159, Unknown=17, NotChecked=142, Total=1482 [2022-07-13 18:11:39,297 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 359 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 932 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:11:39,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 2137 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1027 Invalid, 0 Unknown, 932 Unchecked, 1.3s Time] [2022-07-13 18:11:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2022-07-13 18:11:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4614. [2022-07-13 18:11:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 3559 states have (on average 1.093565608316943) internal successors, (3892), 3474 states have internal predecessors, (3892), 242 states have call successors, (242), 149 states have call predecessors, (242), 812 states have return successors, (8721), 990 states have call predecessors, (8721), 240 states have call successors, (8721) [2022-07-13 18:11:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 12855 transitions. [2022-07-13 18:11:39,739 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 12855 transitions. Word has length 106 [2022-07-13 18:11:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:11:39,740 INFO L495 AbstractCegarLoop]: Abstraction has 4614 states and 12855 transitions. [2022-07-13 18:11:39,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 18:11:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 12855 transitions. [2022-07-13 18:11:39,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 18:11:39,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:11:39,744 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-07-13 18:11:39,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 18:11:39,967 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 [2022-07-13 18:11:39,967 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:11:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:11:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 647450053, now seen corresponding path program 1 times [2022-07-13 18:11:39,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:11:39,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962386258] [2022-07-13 18:11:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:11:39,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:11:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:11:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:11:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:11:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:11:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:11:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:11:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:11:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:11:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962386258] [2022-07-13 18:11:40,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962386258] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:11:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900340562] [2022-07-13 18:11:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:11:40,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:11:40,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:11:40,340 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) [2022-07-13 18:11:40,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 18:11:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:41,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 18:11:41,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:11:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 18:11:41,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:11:41,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900340562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:11:41,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:11:41,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 20 [2022-07-13 18:11:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863799476] [2022-07-13 18:11:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:11:41,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:11:41,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:11:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:11:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:11:41,132 INFO L87 Difference]: Start difference. First operand 4614 states and 12855 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) [2022-07-13 18:11:41,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:11:41,559 INFO L93 Difference]: Finished difference Result 9328 states and 34006 transitions. [2022-07-13 18:11:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:11:41,559 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 88 [2022-07-13 18:11:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:11:41,601 INFO L225 Difference]: With dead ends: 9328 [2022-07-13 18:11:41,601 INFO L226 Difference]: Without dead ends: 4732 [2022-07-13 18:11:41,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-07-13 18:11:41,629 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-13 18:11:41,630 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] [2022-07-13 18:11:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-07-13 18:11:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4639. [2022-07-13 18:11:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 3578 states have (on average 1.093068753493572) internal successors, (3911), 3494 states have internal predecessors, (3911), 242 states have call successors, (242), 149 states have call predecessors, (242), 818 states have return successors, (8810), 995 states have call predecessors, (8810), 240 states have call successors, (8810) [2022-07-13 18:11:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 12963 transitions. [2022-07-13 18:11:42,061 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 12963 transitions. Word has length 88 [2022-07-13 18:11:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:11:42,061 INFO L495 AbstractCegarLoop]: Abstraction has 4639 states and 12963 transitions. [2022-07-13 18:11:42,061 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) [2022-07-13 18:11:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 12963 transitions. [2022-07-13 18:11:42,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 18:11:42,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:11:42,065 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-07-13 18:11:42,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 18:11:42,279 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,SelfDestructingSolverStorable33 [2022-07-13 18:11:42,279 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:11:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:11:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash -174001039, now seen corresponding path program 2 times [2022-07-13 18:11:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:11:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916935207] [2022-07-13 18:11:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:11:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:11:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:11:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:11:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:11:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 18:11:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:11:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:11:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:11:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:11:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:11:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916935207] [2022-07-13 18:11:42,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916935207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:11:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025682790] [2022-07-13 18:11:42,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 18:11:42,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:11:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:11:42,650 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:11:42,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 18:11:44,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 18:11:44,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:11:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 18:11:44,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:11:44,512 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 [2022-07-13 18:11:56,795 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12011 Int) (v_ArrVal_12015 Int) (v_ArrVal_12014 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_222| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_223| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_224| Int) (v_ArrVal_12019 Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_225| Int) (v_ArrVal_12018 Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_226| Int)) (and (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (= |c_#memory_int| (store |c_old(#memory_int)| c_~user~0.base (store (store (store (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_222|) v_ArrVal_12011) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_223|) v_ArrVal_12014) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_224|) v_ArrVal_12015) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_225|) v_ArrVal_12018) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_226|) v_ArrVal_12019))) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_224| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_225|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_222| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_223|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_223| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_224|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_222|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_225| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_226|))) is different from true [2022-07-13 18:11:56,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:11:56,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 56 [2022-07-13 18:11:57,004 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 [2022-07-13 18:11:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 8 refuted. 6 times theorem prover too weak. 8 trivial. 5 not checked. [2022-07-13 18:11:57,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:11:57,743 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 42 treesize of output 38 [2022-07-13 18:11:57,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:57,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:57,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:57,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:57,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:57,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-07-13 18:11:58,179 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 42 treesize of output 38 [2022-07-13 18:11:58,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:58,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:58,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:58,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:58,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 18:11:58,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-07-13 18:12:11,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025682790] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:12:11,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 18:12:11,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-07-13 18:12:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739604361] [2022-07-13 18:12:11,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 18:12:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 18:12:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:12:11,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 18:12:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=624, Unknown=16, NotChecked=50, Total=756 [2022-07-13 18:12:11,143 INFO L87 Difference]: Start difference. First operand 4639 states and 12963 transitions. Second operand has 25 states, 24 states have (on average 4.083333333333333) internal successors, (98), 22 states have internal predecessors, (98), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 18:12:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:12:51,226 INFO L93 Difference]: Finished difference Result 9921 states and 37107 transitions. [2022-07-13 18:12:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 18:12:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.083333333333333) internal successors, (98), 22 states have internal predecessors, (98), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-07-13 18:12:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:12:51,297 INFO L225 Difference]: With dead ends: 9921 [2022-07-13 18:12:51,297 INFO L226 Difference]: Without dead ends: 5300 [2022-07-13 18:12:51,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 63.3s TimeCoverageRelationStatistics Valid=225, Invalid=1726, Unknown=33, NotChecked=86, Total=2070 [2022-07-13 18:12:51,342 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 152 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 944 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:12:51,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 2678 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1128 Invalid, 0 Unknown, 944 Unchecked, 1.4s Time] [2022-07-13 18:12:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2022-07-13 18:12:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5107. [2022-07-13 18:12:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 3944 states have (on average 1.0856997971602433) internal successors, (4282), 3864 states have internal predecessors, (4282), 248 states have call successors, (248), 151 states have call predecessors, (248), 914 states have return successors, (9998), 1091 states have call predecessors, (9998), 246 states have call successors, (9998) [2022-07-13 18:12:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 14528 transitions. [2022-07-13 18:12:51,861 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 14528 transitions. Word has length 87 [2022-07-13 18:12:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:12:51,862 INFO L495 AbstractCegarLoop]: Abstraction has 5107 states and 14528 transitions. [2022-07-13 18:12:51,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.083333333333333) internal successors, (98), 22 states have internal predecessors, (98), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 18:12:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 14528 transitions. [2022-07-13 18:12:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 18:12:51,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:12:51,866 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-07-13 18:12:51,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 18:12:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-13 18:12:52,079 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:12:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:12:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1742465137, now seen corresponding path program 3 times [2022-07-13 18:12:52,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:12:52,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115328479] [2022-07-13 18:12:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:12:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:12:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:12:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:12:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:12:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 18:12:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:12:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:12:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 18:12:52,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:12:52,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115328479] [2022-07-13 18:12:52,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115328479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:12:52,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808120977] [2022-07-13 18:12:52,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 18:12:52,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:12:52,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:12:52,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:12:52,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 18:12:54,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 18:12:54,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 18:12:54,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 18:12:54,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:12:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 18:12:54,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:12:54,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808120977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:12:54,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:12:54,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 21 [2022-07-13 18:12:54,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240105021] [2022-07-13 18:12:54,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:12:54,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:12:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:12:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:12:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-07-13 18:12:54,114 INFO L87 Difference]: Start difference. First operand 5107 states and 14528 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 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) [2022-07-13 18:12:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:12:54,525 INFO L93 Difference]: Finished difference Result 10310 states and 38606 transitions. [2022-07-13 18:12:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:12:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 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 88 [2022-07-13 18:12:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:12:54,592 INFO L225 Difference]: With dead ends: 10310 [2022-07-13 18:12:54,592 INFO L226 Difference]: Without dead ends: 5221 [2022-07-13 18:12:54,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-07-13 18:12:54,638 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 [2022-07-13 18:12:54,638 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] [2022-07-13 18:12:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2022-07-13 18:12:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 5105. [2022-07-13 18:12:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 3943 states have (on average 1.085721531828557) internal successors, (4281), 3862 states have internal predecessors, (4281), 248 states have call successors, (248), 151 states have call predecessors, (248), 913 states have return successors, (9995), 1091 states have call predecessors, (9995), 246 states have call successors, (9995) [2022-07-13 18:12:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 14524 transitions. [2022-07-13 18:12:55,176 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 14524 transitions. Word has length 88 [2022-07-13 18:12:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:12:55,177 INFO L495 AbstractCegarLoop]: Abstraction has 5105 states and 14524 transitions. [2022-07-13 18:12:55,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 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) [2022-07-13 18:12:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 14524 transitions. [2022-07-13 18:12:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 18:12:55,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:12:55,185 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] [2022-07-13 18:12:55,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-13 18:12:55,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-13 18:12:55,386 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:12:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:12:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1912288179, now seen corresponding path program 1 times [2022-07-13 18:12:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:12:55,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051807130] [2022-07-13 18:12:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:12:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:12:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:12:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:12:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:12:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 18:12:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 18:12:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 18:12:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 18:12:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 18:12:55,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:12:55,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051807130] [2022-07-13 18:12:55,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051807130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:12:55,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:12:55,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:12:55,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799838850] [2022-07-13 18:12:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:12:55,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:12:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:12:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:12:55,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:12:55,586 INFO L87 Difference]: Start difference. First operand 5105 states and 14524 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) [2022-07-13 18:12:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:12:56,476 INFO L93 Difference]: Finished difference Result 10241 states and 38470 transitions. [2022-07-13 18:12:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:12:56,476 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 [2022-07-13 18:12:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:12:56,534 INFO L225 Difference]: With dead ends: 10241 [2022-07-13 18:12:56,534 INFO L226 Difference]: Without dead ends: 5102 [2022-07-13 18:12:56,573 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 [2022-07-13 18:12:56,574 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 145 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:12:56,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 478 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:12:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2022-07-13 18:12:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 4679. [2022-07-13 18:12:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4679 states, 3620 states have (on average 1.0743093922651934) internal successors, (3889), 3545 states have internal predecessors, (3889), 219 states have call successors, (219), 121 states have call predecessors, (219), 839 states have return successors, (9260), 1012 states have call predecessors, (9260), 217 states have call successors, (9260) [2022-07-13 18:12:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 13368 transitions. [2022-07-13 18:12:57,102 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 13368 transitions. Word has length 88 [2022-07-13 18:12:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:12:57,102 INFO L495 AbstractCegarLoop]: Abstraction has 4679 states and 13368 transitions. [2022-07-13 18:12:57,102 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) [2022-07-13 18:12:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 13368 transitions. [2022-07-13 18:12:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 18:12:57,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:12:57,109 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] [2022-07-13 18:12:57,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 18:12:57,109 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:12:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:12:57,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1061052459, now seen corresponding path program 1 times [2022-07-13 18:12:57,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:12:57,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558952292] [2022-07-13 18:12:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:12:57,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:12:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:12:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:12:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 18:12:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 18:12:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 18:12:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 18:12:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 18:12:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 18:12:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:12:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558952292] [2022-07-13 18:12:57,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558952292] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:12:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733068140] [2022-07-13 18:12:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:12:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:12:57,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:12:57,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:12:57,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 18:12:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:12:58,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-13 18:12:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:12:58,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-07-13 18:12:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:12:58,897 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 [2022-07-13 18:12:58,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 18:12:58,907 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 [2022-07-13 18:12:58,961 INFO L356 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2022-07-13 18:12:58,963 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-13 18:12:58,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 18:12:59,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-13 18:12:59,164 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_2 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:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:152) 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:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) 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:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) 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) [2022-07-13 18:12:59,168 INFO L158 Benchmark]: Toolchain (without parser) took 208656.66ms. Allocated memory was 92.3MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 68.3MB in the beginning and 346.1MB in the end (delta: -277.8MB). Peak memory consumption was 896.6MB. Max. memory is 16.1GB. [2022-07-13 18:12:59,168 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 75.5MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:12:59,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 590.25ms. Allocated memory is still 92.3MB. Free memory was 68.0MB in the beginning and 50.9MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 18:12:59,168 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.99ms. Allocated memory is still 92.3MB. Free memory was 50.6MB in the beginning and 47.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 18:12:59,169 INFO L158 Benchmark]: Boogie Preprocessor took 52.75ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 67.9MB in the end (delta: -20.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 18:12:59,169 INFO L158 Benchmark]: RCFGBuilder took 850.13ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 67.9MB in the beginning and 78.8MB in the end (delta: -11.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-07-13 18:12:59,170 INFO L158 Benchmark]: TraceAbstraction took 207093.35ms. Allocated memory was 111.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 78.0MB in the beginning and 346.1MB in the end (delta: -268.1MB). Peak memory consumption was 890.3MB. Max. memory is 16.1GB. [2022-07-13 18:12:59,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 75.5MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 590.25ms. Allocated memory is still 92.3MB. Free memory was 68.0MB in the beginning and 50.9MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.99ms. Allocated memory is still 92.3MB. Free memory was 50.6MB in the beginning and 47.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.75ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 67.9MB in the end (delta: -20.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 850.13ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 67.9MB in the beginning and 78.8MB in the end (delta: -11.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * TraceAbstraction took 207093.35ms. Allocated memory was 111.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 78.0MB in the beginning and 346.1MB in the end (delta: -268.1MB). Peak memory consumption was 890.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_2 input size 78 context size 78 output size 78 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_2 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. [2022-07-13 18:12:59,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-?-f4b24e3 [2022-07-13 18:13:01,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:13:01,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:13:01,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:13:01,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:13:01,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:13:01,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:13:01,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:13:01,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:13:01,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:13:01,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:13:01,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:13:01,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:13:01,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:13:01,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:13:01,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:13:01,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:13:01,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:13:01,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:13:01,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:13:01,380 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:13:01,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:13:01,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:13:01,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:13:01,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:13:01,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:13:01,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:13:01,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:13:01,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:13:01,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:13:01,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:13:01,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:13:01,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:13:01,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:13:01,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:13:01,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:13:01,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:13:01,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:13:01,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:13:01,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:13:01,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:13:01,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:13:01,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 18:13:01,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:13:01,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:13:01,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:13:01,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:13:01,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:13:01,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:13:01,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:13:01,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:13:01,453 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:13:01,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:13:01,455 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:13:01,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:13:01,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:13:01,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:13:01,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:13:01,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:13:01,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 18:13:01,456 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 18:13:01,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 18:13:01,457 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:13:01,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:13:01,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:13:01,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:13:01,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:13:01,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:13:01,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:13:01,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:13:01,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:13:01,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:13:01,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:13:01,459 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 18:13:01,459 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 18:13:01,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:13:01,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:13:01,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:13:01,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 18:13:01,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2022-07-13 18:13:01,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:13:01,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:13:01,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:13:01,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:13:01,809 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:13:01,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-13 18:13:01,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60222cc1e/53d6e24d09964f2c8647bc827dd0c6e5/FLAG9372eecd8 [2022-07-13 18:13:02,528 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:13:02,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-07-13 18:13:02,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60222cc1e/53d6e24d09964f2c8647bc827dd0c6e5/FLAG9372eecd8 [2022-07-13 18:13:02,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60222cc1e/53d6e24d09964f2c8647bc827dd0c6e5 [2022-07-13 18:13:02,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:13:02,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:13:02,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:13:02,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:13:02,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:13:02,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:13:02" (1/1) ... [2022-07-13 18:13:02,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5159a8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:02, skipping insertion in model container [2022-07-13 18:13:02,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:13:02" (1/1) ... [2022-07-13 18:13:02,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:13:02,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:13:03,403 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] [2022-07-13 18:13:03,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:13:03,442 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:13:03,517 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] [2022-07-13 18:13:03,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:13:03,593 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:13:03,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03 WrapperNode [2022-07-13 18:13:03,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:13:03,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:13:03,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:13:03,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:13:03,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,690 INFO L137 Inliner]: procedures = 188, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 207 [2022-07-13 18:13:03,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:13:03,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:13:03,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:13:03,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:13:03,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:13:03,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:13:03,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:13:03,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:13:03,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (1/1) ... [2022-07-13 18:13:03,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:13:03,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:13:03,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:13:03,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:13:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-13 18:13:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 18:13:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-13 18:13:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-13 18:13:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-07-13 18:13:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-07-13 18:13:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 18:13:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-07-13 18:13:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-07-13 18:13:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:13:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 18:13:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 18:13:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-07-13 18:13:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-07-13 18:13:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-07-13 18:13:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-07-13 18:13:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-07-13 18:13:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-07-13 18:13:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 18:13:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-07-13 18:13:03,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-07-13 18:13:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 18:13:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 18:13:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 18:13:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-13 18:13:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-07-13 18:13:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-07-13 18:13:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-07-13 18:13:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-07-13 18:13:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-13 18:13:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:13:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:13:04,052 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:13:04,054 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:13:07,696 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:13:07,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:13:07,706 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:13:07,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:13:07 BoogieIcfgContainer [2022-07-13 18:13:07,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:13:07,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:13:07,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:13:07,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:13:07,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:13:02" (1/3) ... [2022-07-13 18:13:07,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de2d7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:13:07, skipping insertion in model container [2022-07-13 18:13:07,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:03" (2/3) ... [2022-07-13 18:13:07,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de2d7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:13:07, skipping insertion in model container [2022-07-13 18:13:07,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:13:07" (3/3) ... [2022-07-13 18:13:07,716 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-07-13 18:13:07,728 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:13:07,729 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:13:07,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:13:07,796 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@4a455a97, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@203d13e0 [2022-07-13 18:13:07,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:13:07,801 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) [2022-07-13 18:13:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 18:13:07,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:07,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:13:07,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash -965536278, now seen corresponding path program 1 times [2022-07-13 18:13:07,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 18:13:07,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825599645] [2022-07-13 18:13:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:07,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 18:13:07,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 18:13:07,839 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) [2022-07-13 18:13:07,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 18:13:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:08,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 18:13:08,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:13:08,094 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 [2022-07-13 18:13:08,191 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 [2022-07-13 18:13:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:08,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:13:08,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 18:13:08,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825599645] [2022-07-13 18:13:08,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825599645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:08,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:08,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:13:08,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415217618] [2022-07-13 18:13:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:08,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:13:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 18:13:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:13:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:13:08,286 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) [2022-07-13 18:13:09,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 18:13:11,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 18:13:13,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 18:13:17,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 18:13:23,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:23,576 INFO L93 Difference]: Finished difference Result 285 states and 409 transitions. [2022-07-13 18:13:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:13:23,579 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 [2022-07-13 18:13:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:23,588 INFO L225 Difference]: With dead ends: 285 [2022-07-13 18:13:23,588 INFO L226 Difference]: Without dead ends: 134 [2022-07-13 18:13:23,592 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 [2022-07-13 18:13:23,595 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 36 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s 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, 15.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:13:23,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1035 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-07-13 18:13:23,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-13 18:13:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-07-13 18:13:23,638 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) [2022-07-13 18:13:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 179 transitions. [2022-07-13 18:13:23,642 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 179 transitions. Word has length 19 [2022-07-13 18:13:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:23,643 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 179 transitions. [2022-07-13 18:13:23,643 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) [2022-07-13 18:13:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 179 transitions. [2022-07-13 18:13:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 18:13:23,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:23,647 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] [2022-07-13 18:13:23,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:13:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 18:13:23,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1463372220, now seen corresponding path program 1 times [2022-07-13 18:13:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 18:13:23,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113039772] [2022-07-13 18:13:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:23,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 18:13:23,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 18:13:23,867 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) [2022-07-13 18:13:23,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 18:13:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:24,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:13:24,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:13:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:24,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:13:24,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 18:13:24,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113039772] [2022-07-13 18:13:24,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113039772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:24,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:24,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:13:24,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888124984] [2022-07-13 18:13:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:13:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 18:13:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:13:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:13:24,093 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) [2022-07-13 18:13:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:24,212 INFO L93 Difference]: Finished difference Result 253 states and 363 transitions. [2022-07-13 18:13:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:13:24,213 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 [2022-07-13 18:13:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:24,215 INFO L225 Difference]: With dead ends: 253 [2022-07-13 18:13:24,215 INFO L226 Difference]: Without dead ends: 133 [2022-07-13 18:13:24,216 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 [2022-07-13 18:13:24,217 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 [2022-07-13 18:13:24,218 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] [2022-07-13 18:13:24,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-13 18:13:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-13 18:13:24,228 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) [2022-07-13 18:13:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-07-13 18:13:24,230 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 35 [2022-07-13 18:13:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:24,230 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-07-13 18:13:24,231 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) [2022-07-13 18:13:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-07-13 18:13:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 18:13:24,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:24,233 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] [2022-07-13 18:13:24,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 18:13:24,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 18:13:24,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1541012852, now seen corresponding path program 1 times [2022-07-13 18:13:24,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 18:13:24,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846697716] [2022-07-13 18:13:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:24,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 18:13:24,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 18:13:24,443 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) [2022-07-13 18:13:24,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 18:13:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:24,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 18:13:24,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:13:24,614 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 [2022-07-13 18:13:24,688 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 [2022-07-13 18:13:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:24,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:13:24,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 18:13:24,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846697716] [2022-07-13 18:13:24,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846697716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:24,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:24,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:13:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025258553] [2022-07-13 18:13:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:24,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:13:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 18:13:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:13:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:13:24,743 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) [2022-07-13 18:13:26,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 18:13:27,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []