./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-crafted/bAnd5.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 d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 21:22:24,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 21:22:24,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 21:22:24,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 21:22:24,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 21:22:24,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 21:22:24,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 21:22:24,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 21:22:24,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 21:22:24,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 21:22:24,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 21:22:24,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 21:22:24,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 21:22:24,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 21:22:24,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 21:22:24,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 21:22:24,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 21:22:24,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 21:22:24,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 21:22:24,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 21:22:24,697 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 21:22:24,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 21:22:24,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 21:22:24,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 21:22:24,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 21:22:24,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 21:22:24,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 21:22:24,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 21:22:24,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 21:22:24,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 21:22:24,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 21:22:24,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 21:22:24,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 21:22:24,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 21:22:24,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 21:22:24,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 21:22:24,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 21:22:24,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 21:22:24,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 21:22:24,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 21:22:24,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 21:22:24,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 21:22:24,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 21:22:24,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 21:22:24,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 21:22:24,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 21:22:24,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 21:22:24,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 21:22:24,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 21:22:24,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 21:22:24,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 21:22:24,741 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 21:22:24,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 21:22:24,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 21:22:24,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 21:22:24,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 21:22:24,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 21:22:24,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 21:22:24,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 21:22:24,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 21:22:24,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 21:22:24,744 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 21:22:24,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 21:22:24,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 21:22:24,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2022-07-20 21:22:24,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 21:22:24,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 21:22:24,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 21:22:24,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 21:22:24,938 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 21:22:24,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-20 21:22:24,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f105bbd9/a94bfd0119ee404182bcae10bc266f26/FLAG16b91306d [2022-07-20 21:22:25,335 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 21:22:25,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-20 21:22:25,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f105bbd9/a94bfd0119ee404182bcae10bc266f26/FLAG16b91306d [2022-07-20 21:22:25,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f105bbd9/a94bfd0119ee404182bcae10bc266f26 [2022-07-20 21:22:25,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 21:22:25,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 21:22:25,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 21:22:25,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 21:22:25,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 21:22:25,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a847248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25, skipping insertion in model container [2022-07-20 21:22:25,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 21:22:25,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 21:22:25,492 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-crafted/bAnd5.i[1369,1382] [2022-07-20 21:22:25,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 21:22:25,501 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 21:22:25,515 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-crafted/bAnd5.i[1369,1382] [2022-07-20 21:22:25,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 21:22:25,523 INFO L208 MainTranslator]: Completed translation [2022-07-20 21:22:25,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25 WrapperNode [2022-07-20 21:22:25,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 21:22:25,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 21:22:25,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 21:22:25,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 21:22:25,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,547 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2022-07-20 21:22:25,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 21:22:25,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 21:22:25,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 21:22:25,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 21:22:25,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 21:22:25,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 21:22:25,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 21:22:25,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 21:22:25,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (1/1) ... [2022-07-20 21:22:25,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 21:22:25,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:25,604 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) [2022-07-20 21:22:25,610 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 [2022-07-20 21:22:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 21:22:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 21:22:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 21:22:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 21:22:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-07-20 21:22:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-07-20 21:22:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 21:22:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 21:22:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 21:22:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 21:22:25,701 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 21:22:25,702 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 21:22:25,798 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 21:22:25,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 21:22:25,816 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-20 21:22:25,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:22:25 BoogieIcfgContainer [2022-07-20 21:22:25,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 21:22:25,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 21:22:25,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 21:22:25,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 21:22:25,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:22:25" (1/3) ... [2022-07-20 21:22:25,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a9a8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:22:25, skipping insertion in model container [2022-07-20 21:22:25,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:22:25" (2/3) ... [2022-07-20 21:22:25,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a9a8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:22:25, skipping insertion in model container [2022-07-20 21:22:25,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:22:25" (3/3) ... [2022-07-20 21:22:25,832 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2022-07-20 21:22:25,842 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 21:22:25,843 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 21:22:25,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 21:22:25,881 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@6db5f00, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a0741c0 [2022-07-20 21:22:25,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 21:22:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:22:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 21:22:25,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:25,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:25,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -469479236, now seen corresponding path program 1 times [2022-07-20 21:22:25,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:25,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163590722] [2022-07-20 21:22:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:25,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-20 21:22:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-20 21:22:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 21:22:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 21:22:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:26,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163590722] [2022-07-20 21:22:26,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163590722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:22:26,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:22:26,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 21:22:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350898748] [2022-07-20 21:22:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:22:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 21:22:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:26,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 21:22:26,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 21:22:26,126 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 21:22:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:26,185 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2022-07-20 21:22:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 21:22:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-07-20 21:22:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:26,195 INFO L225 Difference]: With dead ends: 63 [2022-07-20 21:22:26,196 INFO L226 Difference]: Without dead ends: 30 [2022-07-20 21:22:26,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 21:22:26,206 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:26,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 87 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:22:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-20 21:22:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-20 21:22:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:22:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-20 21:22:26,271 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 29 [2022-07-20 21:22:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:26,272 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-20 21:22:26,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 21:22:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-20 21:22:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 21:22:26,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:26,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 21:22:26,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1932942338, now seen corresponding path program 1 times [2022-07-20 21:22:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:26,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219482538] [2022-07-20 21:22:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 21:22:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 21:22:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 21:22:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-20 21:22:26,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:26,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219482538] [2022-07-20 21:22:26,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219482538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:26,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223426276] [2022-07-20 21:22:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:26,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:26,417 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) [2022-07-20 21:22:26,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 21:22:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:26,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 21:22:26,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 21:22:26,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 21:22:26,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223426276] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:26,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:26,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-07-20 21:22:26,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966358901] [2022-07-20 21:22:26,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:26,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 21:22:26,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 21:22:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-20 21:22:26,619 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 21:22:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:26,714 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-07-20 21:22:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 21:22:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 31 [2022-07-20 21:22:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:26,716 INFO L225 Difference]: With dead ends: 62 [2022-07-20 21:22:26,716 INFO L226 Difference]: Without dead ends: 39 [2022-07-20 21:22:26,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-20 21:22:26,717 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 69 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:26,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 128 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:22:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-20 21:22:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-20 21:22:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:22:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-20 21:22:26,730 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 31 [2022-07-20 21:22:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:26,730 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-20 21:22:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 21:22:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-20 21:22:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 21:22:26,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:26,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:26,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 21:22:26,945 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 [2022-07-20 21:22:26,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1452282271, now seen corresponding path program 1 times [2022-07-20 21:22:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:26,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819000843] [2022-07-20 21:22:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 21:22:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 21:22:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-20 21:22:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 21:22:27,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:27,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819000843] [2022-07-20 21:22:27,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819000843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:27,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618734135] [2022-07-20 21:22:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:27,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:27,052 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) [2022-07-20 21:22:27,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 21:22:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 21:22:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-20 21:22:27,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 21:22:27,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618734135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:22:27,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:22:27,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-07-20 21:22:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364610602] [2022-07-20 21:22:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:22:27,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 21:22:27,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 21:22:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 21:22:27,158 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:22:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:27,180 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-07-20 21:22:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 21:22:27,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-07-20 21:22:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:27,182 INFO L225 Difference]: With dead ends: 52 [2022-07-20 21:22:27,182 INFO L226 Difference]: Without dead ends: 34 [2022-07-20 21:22:27,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 21:22:27,183 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:27,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 44 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:22:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-20 21:22:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-20 21:22:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:22:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-07-20 21:22:27,192 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 45 [2022-07-20 21:22:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:27,193 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-07-20 21:22:27,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:22:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-07-20 21:22:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-20 21:22:27,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:27,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:27,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 21:22:27,411 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 [2022-07-20 21:22:27,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1430162787, now seen corresponding path program 1 times [2022-07-20 21:22:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:27,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738776706] [2022-07-20 21:22:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:27,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 21:22:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 21:22:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-20 21:22:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-20 21:22:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738776706] [2022-07-20 21:22:27,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738776706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590506139] [2022-07-20 21:22:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:27,681 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) [2022-07-20 21:22:27,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 21:22:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:27,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-20 21:22:27,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-20 21:22:27,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-20 21:22:28,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590506139] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:28,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:28,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-07-20 21:22:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352197893] [2022-07-20 21:22:28,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 21:22:28,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 21:22:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-20 21:22:28,083 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 21:22:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:28,183 INFO L93 Difference]: Finished difference Result 88 states and 116 transitions. [2022-07-20 21:22:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 21:22:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-07-20 21:22:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:28,188 INFO L225 Difference]: With dead ends: 88 [2022-07-20 21:22:28,188 INFO L226 Difference]: Without dead ends: 62 [2022-07-20 21:22:28,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-20 21:22:28,190 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:28,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 306 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:22:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-20 21:22:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-07-20 21:22:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-20 21:22:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-07-20 21:22:28,204 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 47 [2022-07-20 21:22:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:28,205 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-07-20 21:22:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 21:22:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-07-20 21:22:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 21:22:28,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:28,206 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-20 21:22:28,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 21:22:28,411 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 [2022-07-20 21:22:28,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1484367723, now seen corresponding path program 1 times [2022-07-20 21:22:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:28,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153803910] [2022-07-20 21:22:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:28,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 21:22:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 21:22:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-20 21:22:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:22:28,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:28,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153803910] [2022-07-20 21:22:28,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153803910] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921822507] [2022-07-20 21:22:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:28,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:28,935 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) [2022-07-20 21:22:28,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 21:22:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:28,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-20 21:22:28,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:29,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:29,177 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 20 treesize of output 17 [2022-07-20 21:22:29,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:29,343 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:29,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 42 treesize of output 27 [2022-07-20 21:22:29,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:29,406 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:29,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 38 treesize of output 27 [2022-07-20 21:22:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:22:29,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:30,291 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 73 treesize of output 61 [2022-07-20 21:22:30,295 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 25 treesize of output 23 [2022-07-20 21:22:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:22:30,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921822507] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:30,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:30,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-07-20 21:22:30,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620334541] [2022-07-20 21:22:30,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:30,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-20 21:22:30,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-20 21:22:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2022-07-20 21:22:30,447 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-20 21:22:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:33,529 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2022-07-20 21:22:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-20 21:22:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 48 [2022-07-20 21:22:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:33,536 INFO L225 Difference]: With dead ends: 271 [2022-07-20 21:22:33,536 INFO L226 Difference]: Without dead ends: 219 [2022-07-20 21:22:33,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3246 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1410, Invalid=10362, Unknown=0, NotChecked=0, Total=11772 [2022-07-20 21:22:33,543 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 514 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:33,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 379 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1461 Invalid, 0 Unknown, 192 Unchecked, 0.9s Time] [2022-07-20 21:22:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-20 21:22:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2022-07-20 21:22:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 132 states have (on average 1.25) internal successors, (165), 139 states have internal predecessors, (165), 15 states have call successors, (15), 4 states have call predecessors, (15), 9 states have return successors, (48), 13 states have call predecessors, (48), 15 states have call successors, (48) [2022-07-20 21:22:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 228 transitions. [2022-07-20 21:22:33,592 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 228 transitions. Word has length 48 [2022-07-20 21:22:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:33,593 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 228 transitions. [2022-07-20 21:22:33,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-20 21:22:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 228 transitions. [2022-07-20 21:22:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 21:22:33,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:33,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-20 21:22:33,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-20 21:22:33,825 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 [2022-07-20 21:22:33,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash 779674309, now seen corresponding path program 2 times [2022-07-20 21:22:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748900549] [2022-07-20 21:22:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 21:22:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 21:22:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-20 21:22:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 21:22:34,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748900549] [2022-07-20 21:22:34,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748900549] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725207294] [2022-07-20 21:22:34,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 21:22:34,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:34,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:34,081 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) [2022-07-20 21:22:34,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 21:22:34,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 21:22:34,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:22:34,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-20 21:22:34,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:34,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:34,379 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:34,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 43 treesize of output 23 [2022-07-20 21:22:34,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:34,528 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:34,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 41 treesize of output 26 [2022-07-20 21:22:34,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:34,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:22:34,584 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:34,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 33 treesize of output 35 [2022-07-20 21:22:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 21:22:34,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:35,085 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 116 treesize of output 92 [2022-07-20 21:22:35,091 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-20 21:22:35,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 86 treesize of output 1 [2022-07-20 21:22:35,257 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 116 treesize of output 92 [2022-07-20 21:22:35,260 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-20 21:22:35,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 86 treesize of output 1 [2022-07-20 21:22:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-20 21:22:35,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725207294] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:35,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:35,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 14] total 43 [2022-07-20 21:22:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719349519] [2022-07-20 21:22:35,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-20 21:22:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-20 21:22:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2022-07-20 21:22:35,264 INFO L87 Difference]: Start difference. First operand 157 states and 228 transitions. Second operand has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-20 21:22:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:37,371 INFO L93 Difference]: Finished difference Result 320 states and 441 transitions. [2022-07-20 21:22:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-20 21:22:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) Word has length 48 [2022-07-20 21:22:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:37,373 INFO L225 Difference]: With dead ends: 320 [2022-07-20 21:22:37,373 INFO L226 Difference]: Without dead ends: 236 [2022-07-20 21:22:37,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=866, Invalid=5940, Unknown=0, NotChecked=0, Total=6806 [2022-07-20 21:22:37,375 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 353 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:37,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 357 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1116 Invalid, 0 Unknown, 378 Unchecked, 0.7s Time] [2022-07-20 21:22:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-20 21:22:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 146. [2022-07-20 21:22:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 130 states have internal predecessors, (152), 15 states have call successors, (15), 3 states have call predecessors, (15), 8 states have return successors, (45), 12 states have call predecessors, (45), 15 states have call successors, (45) [2022-07-20 21:22:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 212 transitions. [2022-07-20 21:22:37,391 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 212 transitions. Word has length 48 [2022-07-20 21:22:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:37,391 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 212 transitions. [2022-07-20 21:22:37,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-20 21:22:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 212 transitions. [2022-07-20 21:22:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-20 21:22:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:37,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:37,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-20 21:22:37,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:37,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1369061923, now seen corresponding path program 1 times [2022-07-20 21:22:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:37,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135157096] [2022-07-20 21:22:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 21:22:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 21:22:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-20 21:22:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 21:22:37,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:37,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135157096] [2022-07-20 21:22:37,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135157096] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240486910] [2022-07-20 21:22:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:37,852 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) [2022-07-20 21:22:37,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-20 21:22:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:37,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-20 21:22:37,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-20 21:22:38,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-20 21:22:38,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240486910] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:38,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:38,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 18 [2022-07-20 21:22:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894207546] [2022-07-20 21:22:38,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:38,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-20 21:22:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-20 21:22:38,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-20 21:22:38,292 INFO L87 Difference]: Start difference. First operand 146 states and 212 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 21:22:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:38,505 INFO L93 Difference]: Finished difference Result 246 states and 396 transitions. [2022-07-20 21:22:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 21:22:38,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-07-20 21:22:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:38,509 INFO L225 Difference]: With dead ends: 246 [2022-07-20 21:22:38,509 INFO L226 Difference]: Without dead ends: 242 [2022-07-20 21:22:38,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 19 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-07-20 21:22:38,510 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:38,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 514 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:22:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-20 21:22:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 197. [2022-07-20 21:22:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 177 states have internal predecessors, (210), 21 states have call successors, (21), 3 states have call predecessors, (21), 11 states have return successors, (88), 16 states have call predecessors, (88), 21 states have call successors, (88) [2022-07-20 21:22:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 319 transitions. [2022-07-20 21:22:38,538 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 319 transitions. Word has length 50 [2022-07-20 21:22:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 319 transitions. [2022-07-20 21:22:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 21:22:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 319 transitions. [2022-07-20 21:22:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-20 21:22:38,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:38,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:38,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-20 21:22:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:38,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:38,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 605481843, now seen corresponding path program 3 times [2022-07-20 21:22:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:38,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693837552] [2022-07-20 21:22:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:38,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-20 21:22:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 21:22:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-20 21:22:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 21:22:38,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:38,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693837552] [2022-07-20 21:22:38,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693837552] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:38,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388575336] [2022-07-20 21:22:38,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 21:22:38,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:38,809 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) [2022-07-20 21:22:38,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-20 21:22:38,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-20 21:22:38,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:22:38,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 21:22:38,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 21:22:38,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 21:22:39,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388575336] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:39,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:39,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 15 [2022-07-20 21:22:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817816124] [2022-07-20 21:22:39,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 21:22:39,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 21:22:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-20 21:22:39,018 INFO L87 Difference]: Start difference. First operand 197 states and 319 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 21:22:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:39,220 INFO L93 Difference]: Finished difference Result 434 states and 707 transitions. [2022-07-20 21:22:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 21:22:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-07-20 21:22:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:39,223 INFO L225 Difference]: With dead ends: 434 [2022-07-20 21:22:39,223 INFO L226 Difference]: Without dead ends: 334 [2022-07-20 21:22:39,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2022-07-20 21:22:39,225 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 204 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:39,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 349 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:22:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-20 21:22:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2022-07-20 21:22:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 259 states have internal predecessors, (306), 27 states have call successors, (27), 5 states have call predecessors, (27), 15 states have return successors, (121), 21 states have call predecessors, (121), 27 states have call successors, (121) [2022-07-20 21:22:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 454 transitions. [2022-07-20 21:22:39,250 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 454 transitions. Word has length 50 [2022-07-20 21:22:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:39,250 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 454 transitions. [2022-07-20 21:22:39,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 21:22:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 454 transitions. [2022-07-20 21:22:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-20 21:22:39,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:39,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-20 21:22:39,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-20 21:22:39,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:39,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash -217318692, now seen corresponding path program 1 times [2022-07-20 21:22:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883211501] [2022-07-20 21:22:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:39,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 21:22:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 21:22:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-20 21:22:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-20 21:22:39,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:22:39,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883211501] [2022-07-20 21:22:39,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883211501] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:22:39,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725157818] [2022-07-20 21:22:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:39,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:22:39,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:22:39,827 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) [2022-07-20 21:22:39,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-20 21:22:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:22:39,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-20 21:22:39,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:22:40,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:40,050 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 28 treesize of output 20 [2022-07-20 21:22:40,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:40,209 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:40,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 34 treesize of output 23 [2022-07-20 21:22:40,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:22:40,254 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:22:40,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 30 treesize of output 23 [2022-07-20 21:22:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:22:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:22:41,051 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 151 treesize of output 125 [2022-07-20 21:22:41,053 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 101 treesize of output 91 [2022-07-20 21:22:41,196 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 151 treesize of output 125 [2022-07-20 21:22:41,198 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 101 treesize of output 91 [2022-07-20 21:22:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 21:22:41,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725157818] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:22:41,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:22:41,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 15] total 49 [2022-07-20 21:22:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867267384] [2022-07-20 21:22:41,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:22:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-20 21:22:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:22:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-20 21:22:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 21:22:41,202 INFO L87 Difference]: Start difference. First operand 286 states and 454 transitions. Second operand has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-20 21:22:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:22:44,442 INFO L93 Difference]: Finished difference Result 658 states and 1086 transitions. [2022-07-20 21:22:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-20 21:22:44,442 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) Word has length 52 [2022-07-20 21:22:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:22:44,450 INFO L225 Difference]: With dead ends: 658 [2022-07-20 21:22:44,451 INFO L226 Difference]: Without dead ends: 415 [2022-07-20 21:22:44,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=910, Invalid=8020, Unknown=0, NotChecked=0, Total=8930 [2022-07-20 21:22:44,454 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 394 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 590 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:22:44,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1403 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1885 Invalid, 0 Unknown, 590 Unchecked, 1.0s Time] [2022-07-20 21:22:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-20 21:22:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 347. [2022-07-20 21:22:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 297 states have (on average 1.2895622895622896) internal successors, (383), 319 states have internal predecessors, (383), 29 states have call successors, (29), 5 states have call predecessors, (29), 20 states have return successors, (210), 22 states have call predecessors, (210), 29 states have call successors, (210) [2022-07-20 21:22:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 622 transitions. [2022-07-20 21:22:44,488 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 622 transitions. Word has length 52 [2022-07-20 21:22:44,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:22:44,488 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 622 transitions. [2022-07-20 21:22:44,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-20 21:22:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 622 transitions. [2022-07-20 21:22:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 21:22:44,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:22:44,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:44,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-20 21:22:44,703 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,SelfDestructingSolverStorable8 [2022-07-20 21:22:44,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:22:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:22:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash 568180046, now seen corresponding path program 1 times [2022-07-20 21:22:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:22:44,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289031049] [2022-07-20 21:22:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:22:44,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:22:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 21:22:44,722 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 21:22:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 21:22:44,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-20 21:22:44,774 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 21:22:44,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 21:22:44,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 21:22:44,777 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:22:44,780 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 21:22:44,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:22:44 BoogieIcfgContainer [2022-07-20 21:22:44,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 21:22:44,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 21:22:44,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 21:22:44,844 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 21:22:44,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:22:25" (3/4) ... [2022-07-20 21:22:44,846 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-20 21:22:44,894 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 21:22:44,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 21:22:44,895 INFO L158 Benchmark]: Toolchain (without parser) took 19539.41ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 116.3MB in the beginning and 107.6MB in the end (delta: 8.7MB). Peak memory consumption was 116.8MB. Max. memory is 16.1GB. [2022-07-20 21:22:44,895 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 21:22:44,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.41ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 118.2MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 21:22:44,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.70ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 116.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 21:22:44,896 INFO L158 Benchmark]: Boogie Preprocessor took 25.97ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 115.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 21:22:44,896 INFO L158 Benchmark]: RCFGBuilder took 240.98ms. Allocated memory is still 142.6MB. Free memory was 115.0MB in the beginning and 103.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-20 21:22:44,899 INFO L158 Benchmark]: TraceAbstraction took 19023.34ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 102.8MB in the beginning and 111.8MB in the end (delta: -9.0MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. [2022-07-20 21:22:44,899 INFO L158 Benchmark]: Witness Printer took 50.68ms. Allocated memory is still 251.7MB. Free memory was 111.8MB in the beginning and 107.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-20 21:22:44,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.41ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 118.2MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.70ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 116.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.97ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 115.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.98ms. Allocated memory is still 142.6MB. Free memory was 115.0MB in the beginning and 103.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19023.34ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 102.8MB in the beginning and 111.8MB in the end (delta: -9.0MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. * Witness Printer took 50.68ms. Allocated memory is still 251.7MB. Free memory was 111.8MB in the beginning and 107.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 57]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [i=0, N=2, x={3:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [i=1, N=2, x={3:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [i=2, N=2, x={3:0}] [L40] COND FALSE !(i < N) VAL [i=2, N=2, x={3:0}] [L45] CALL, EXPR bAnd(x) VAL [\old(res = res & x[i])=6442450946, N=2, res = res & x[i]=6442450946, x={3:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-8, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-8, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-1x[i]=-1] [L25] res = res & x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-1x[i]=-1] [L24] i++ VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND FALSE !(i < N) VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L27] return res; VAL [\old(res = res & x[i])=6442450946, \result=-2147483647, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L45] RET, EXPR bAnd(x) VAL [bAnd(x)=-2147483647, i=2, N=2, res = res & x[i]=6442450946, x={3:0}] [L45] ret = bAnd(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp VAL [i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, temp=-8, x={3:0}] [L48] CALL, EXPR bAnd(x) VAL [\old(res = res & x[i])=6442450946, N=2, res = res & x[i]=6442450946, x={3:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-1, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-1, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-8x[i]=-8] [L25] res = res & x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-8x[i]=-8] [L24] i++ VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND FALSE !(i < N) VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L27] return res; VAL [\old(res = res & x[i])=6442450946, \result=0, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L48] RET, EXPR bAnd(x) VAL [bAnd(x)=0, i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, temp=-8, x={3:0}] [L48] ret2 = bAnd(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [i=0, i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, ret2=0, temp=-1, x={3:0}] [L50] COND TRUE i