./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db44bcd2632ea44e8f4cb990cbfca281afcea3a1e6019a6e92bc74bb29013bf8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:16:27,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:16:27,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:16:27,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:16:27,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:16:27,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:16:27,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:16:27,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:16:27,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:16:27,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:16:27,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:16:27,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:16:27,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:16:27,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:16:27,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:16:27,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:16:27,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:16:27,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:16:27,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:16:27,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:16:27,678 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:16:27,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:16:27,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:16:27,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:16:27,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:16:27,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:16:27,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:16:27,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:16:27,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:16:27,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:16:27,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:16:27,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:16:27,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:16:27,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:16:27,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:16:27,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:16:27,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:16:27,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:16:27,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:16:27,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:16:27,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:16:27,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:16:27,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:16:27,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:16:27,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:16:27,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:16:27,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:16:27,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:16:27,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:16:27,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:16:27,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:16:27,728 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:16:27,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:16:27,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:16:27,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:16:27,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:16:27,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:16:27,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:16:27,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:16:27,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:16:27,731 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:16:27,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:16:27,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:16:27,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:16:27,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:16:27,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:16:27,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:16:27,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:16:27,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:16:27,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:16:27,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:16:27,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:16:27,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:16:27,733 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:16:27,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:16:27,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:16:27,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db44bcd2632ea44e8f4cb990cbfca281afcea3a1e6019a6e92bc74bb29013bf8 [2022-07-19 10:16:27,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:16:27,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:16:27,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:16:27,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:16:27,962 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:16:27,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c [2022-07-19 10:16:28,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05784507a/2ef46ee0da764e40a3d2cb3066510ea8/FLAG5ea1e30b9 [2022-07-19 10:16:28,374 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:16:28,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c [2022-07-19 10:16:28,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05784507a/2ef46ee0da764e40a3d2cb3066510ea8/FLAG5ea1e30b9 [2022-07-19 10:16:28,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05784507a/2ef46ee0da764e40a3d2cb3066510ea8 [2022-07-19 10:16:28,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:16:28,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:16:28,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:16:28,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:16:28,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:16:28,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba785a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28, skipping insertion in model container [2022-07-19 10:16:28,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:16:28,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:16:28,565 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/array-cav19/array_doub_access_init_const.c[419,432] [2022-07-19 10:16:28,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:16:28,586 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:16:28,600 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/array-cav19/array_doub_access_init_const.c[419,432] [2022-07-19 10:16:28,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:16:28,623 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:16:28,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28 WrapperNode [2022-07-19 10:16:28,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:16:28,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:16:28,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:16:28,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:16:28,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,650 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-07-19 10:16:28,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:16:28,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:16:28,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:16:28,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:16:28,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:16:28,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:16:28,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:16:28,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:16:28,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (1/1) ... [2022-07-19 10:16:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:16:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:28,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 10:16:28,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 10:16:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:16:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:16:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:16:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:16:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:16:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:16:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:16:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:16:28,790 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:16:28,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:16:28,864 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:16:28,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:16:28,869 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 10:16:28,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:16:28 BoogieIcfgContainer [2022-07-19 10:16:28,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:16:28,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:16:28,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:16:28,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:16:28,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:16:28" (1/3) ... [2022-07-19 10:16:28,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576e6035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:16:28, skipping insertion in model container [2022-07-19 10:16:28,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:16:28" (2/3) ... [2022-07-19 10:16:28,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576e6035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:16:28, skipping insertion in model container [2022-07-19 10:16:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:16:28" (3/3) ... [2022-07-19 10:16:28,878 INFO L111 eAbstractionObserver]: Analyzing ICFG array_doub_access_init_const.c [2022-07-19 10:16:28,890 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:16:28,890 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:16:28,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:16:28,932 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@c404d73, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19f255b3 [2022-07-19 10:16:28,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:16:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:28,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 10:16:28,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:28,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:28,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:28,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957391, now seen corresponding path program 1 times [2022-07-19 10:16:28,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:28,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040051845] [2022-07-19 10:16:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:28,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040051845] [2022-07-19 10:16:29,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040051845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:16:29,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:16:29,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:16:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559096789] [2022-07-19 10:16:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:16:29,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:16:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:16:29,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:16:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:16:29,149 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:16:29,186 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-07-19 10:16:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:16:29,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 10:16:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:16:29,194 INFO L225 Difference]: With dead ends: 28 [2022-07-19 10:16:29,194 INFO L226 Difference]: Without dead ends: 13 [2022-07-19 10:16:29,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:16:29,202 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:16:29,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:16:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-19 10:16:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-07-19 10:16:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-19 10:16:29,238 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-07-19 10:16:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:16:29,238 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-19 10:16:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-19 10:16:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 10:16:29,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:29,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:16:29,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash -369319347, now seen corresponding path program 1 times [2022-07-19 10:16:29,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:29,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867506801] [2022-07-19 10:16:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:29,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867506801] [2022-07-19 10:16:29,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867506801] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:16:29,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046328185] [2022-07-19 10:16:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:29,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:29,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:16:29,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 10:16:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:29,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 10:16:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:16:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:29,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:16:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:29,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046328185] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:16:29,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:16:29,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-07-19 10:16:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524684181] [2022-07-19 10:16:29,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:16:29,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 10:16:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:16:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 10:16:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-19 10:16:29,537 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:16:29,581 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-07-19 10:16:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 10:16:29,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 10:16:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:16:29,583 INFO L225 Difference]: With dead ends: 25 [2022-07-19 10:16:29,584 INFO L226 Difference]: Without dead ends: 18 [2022-07-19 10:16:29,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-19 10:16:29,586 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:16:29,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:16:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-19 10:16:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-19 10:16:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-07-19 10:16:29,592 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2022-07-19 10:16:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:16:29,592 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-07-19 10:16:29,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-07-19 10:16:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:16:29,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:29,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:29,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 10:16:29,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:29,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:29,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1716192135, now seen corresponding path program 2 times [2022-07-19 10:16:29,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:29,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587343553] [2022-07-19 10:16:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:29,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:29,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:29,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587343553] [2022-07-19 10:16:29,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587343553] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:16:29,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82534816] [2022-07-19 10:16:29,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:16:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:29,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:29,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:16:29,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 10:16:29,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:16:29,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:16:29,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 10:16:29,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:16:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:30,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:16:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:30,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82534816] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:16:30,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:16:30,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-07-19 10:16:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060437298] [2022-07-19 10:16:30,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:16:30,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 10:16:30,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:16:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 10:16:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2022-07-19 10:16:30,173 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:16:30,231 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-07-19 10:16:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 10:16:30,231 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-19 10:16:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:16:30,232 INFO L225 Difference]: With dead ends: 37 [2022-07-19 10:16:30,232 INFO L226 Difference]: Without dead ends: 30 [2022-07-19 10:16:30,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2022-07-19 10:16:30,234 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:16:30,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:16:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-19 10:16:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-19 10:16:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-07-19 10:16:30,240 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 15 [2022-07-19 10:16:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:16:30,240 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-07-19 10:16:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-07-19 10:16:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 10:16:30,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:30,241 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:30,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:16:30,464 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,SelfDestructingSolverStorable2 [2022-07-19 10:16:30,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180091, now seen corresponding path program 3 times [2022-07-19 10:16:30,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:30,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620715892] [2022-07-19 10:16:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:30,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:30,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620715892] [2022-07-19 10:16:30,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620715892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:16:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526559535] [2022-07-19 10:16:30,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:16:30,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:30,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:30,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:16:30,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 10:16:30,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-19 10:16:30,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:16:30,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 10:16:30,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:16:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:31,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:16:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:31,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526559535] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:16:31,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:16:31,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-07-19 10:16:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812317753] [2022-07-19 10:16:31,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:16:31,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 10:16:31,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:16:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 10:16:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 10:16:31,338 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:16:31,425 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-07-19 10:16:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 10:16:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-19 10:16:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:16:31,426 INFO L225 Difference]: With dead ends: 61 [2022-07-19 10:16:31,426 INFO L226 Difference]: Without dead ends: 54 [2022-07-19 10:16:31,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 10:16:31,428 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:16:31,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 30 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:16:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-19 10:16:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-07-19 10:16:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-07-19 10:16:31,436 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 27 [2022-07-19 10:16:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:16:31,436 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-07-19 10:16:31,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-07-19 10:16:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-19 10:16:31,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:31,438 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:31,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:16:31,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:31,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1458393443, now seen corresponding path program 4 times [2022-07-19 10:16:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:31,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139224178] [2022-07-19 10:16:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:31,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:32,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139224178] [2022-07-19 10:16:32,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139224178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:16:32,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098667274] [2022-07-19 10:16:32,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:16:32,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:32,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:16:32,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 10:16:37,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:16:37,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:16:37,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 10:16:37,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:16:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:38,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:16:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:38,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098667274] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:16:38,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:16:38,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2022-07-19 10:16:38,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476496172] [2022-07-19 10:16:38,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:16:38,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-07-19 10:16:38,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:16:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-07-19 10:16:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2022-07-19 10:16:38,884 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:16:39,059 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2022-07-19 10:16:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 10:16:39,060 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-07-19 10:16:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:16:39,061 INFO L225 Difference]: With dead ends: 109 [2022-07-19 10:16:39,062 INFO L226 Difference]: Without dead ends: 102 [2022-07-19 10:16:39,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2022-07-19 10:16:39,064 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:16:39,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 30 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:16:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-19 10:16:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-07-19 10:16:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2022-07-19 10:16:39,075 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 51 [2022-07-19 10:16:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:16:39,075 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2022-07-19 10:16:39,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 71 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:16:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2022-07-19 10:16:39,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 10:16:39,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:39,078 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:39,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:16:39,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:39,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash 546272563, now seen corresponding path program 5 times [2022-07-19 10:16:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:39,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529816746] [2022-07-19 10:16:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:40,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:40,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529816746] [2022-07-19 10:16:40,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529816746] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:16:40,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12711167] [2022-07-19 10:16:40,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:16:40,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:40,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:40,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:16:40,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process