./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-f4b24e3 [2022-07-13 10:22:21,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:22:21,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:22:21,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:22:21,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:22:21,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:22:21,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:22:21,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:22:21,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:22:21,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:22:21,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:22:21,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:22:21,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:22:21,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:22:21,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:22:21,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:22:21,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:22:21,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:22:21,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:22:21,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:22:21,331 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:22:21,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:22:21,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:22:21,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:22:21,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:22:21,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:22:21,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:22:21,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:22:21,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:22:21,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:22:21,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:22:21,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:22:21,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:22:21,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:22:21,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:22:21,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:22:21,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:22:21,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:22:21,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:22:21,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:22:21,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:22:21,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:22:21,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:22:21,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:22:21,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:22:21,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:22:21,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:22:21,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:22:21,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:22:21,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:22:21,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:22:21,366 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:22:21,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:22:21,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:22:21,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:22:21,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:22:21,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:22:21,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:22:21,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:22:21,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:22:21,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:22:21,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:22:21,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:22:21,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:22:21,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:22:21,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:22:21,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:22:21,370 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:22:21,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:22:21,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:22:21,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2022-07-13 10:22:21,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:22:21,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:22:21,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:22:21,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:22:21,611 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:22:21,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-13 10:22:21,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ede810a/77f35508e3264c60b064107947907b0f/FLAGca41116f1 [2022-07-13 10:22:21,971 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:22:21,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-13 10:22:21,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ede810a/77f35508e3264c60b064107947907b0f/FLAGca41116f1 [2022-07-13 10:22:22,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ede810a/77f35508e3264c60b064107947907b0f [2022-07-13 10:22:22,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:22:22,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:22:22,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:22:22,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:22:22,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:22:22,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56fde151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22, skipping insertion in model container [2022-07-13 10:22:22,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:22:22,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:22:22,592 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] [2022-07-13 10:22:22,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:22:22,598 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:22:22,611 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] [2022-07-13 10:22:22,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:22:22,619 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:22:22,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22 WrapperNode [2022-07-13 10:22:22,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:22:22,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:22:22,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:22:22,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:22:22,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,648 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2022-07-13 10:22:22,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:22:22,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:22:22,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:22:22,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:22:22,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:22:22,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:22:22,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:22:22,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:22:22,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (1/1) ... [2022-07-13 10:22:22,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:22:22,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:22,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:22:22,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:22:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:22:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:22:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:22:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:22:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-07-13 10:22:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-07-13 10:22:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:22:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:22:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:22:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:22:22,780 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:22:22,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:22:22,942 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:22:22,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:22:22,956 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:22:22,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:22:22 BoogieIcfgContainer [2022-07-13 10:22:22,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:22:22,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:22:22,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:22:22,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:22:22,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:22:22" (1/3) ... [2022-07-13 10:22:22,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79643716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:22:22, skipping insertion in model container [2022-07-13 10:22:22,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:22:22" (2/3) ... [2022-07-13 10:22:22,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79643716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:22:22, skipping insertion in model container [2022-07-13 10:22:22,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:22:22" (3/3) ... [2022-07-13 10:22:22,965 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2022-07-13 10:22:22,974 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:22:22,974 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:22:23,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:22:23,035 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@4e3afc42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1046ac61 [2022-07-13 10:22:23,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:22:23,039 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) [2022-07-13 10:22:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 10:22:23,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:23,046 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] [2022-07-13 10:22:23,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash -469479236, now seen corresponding path program 1 times [2022-07-13 10:22:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:23,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952596065] [2022-07-13 10:22:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:23,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 10:22:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 10:22:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 10:22:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:22:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:23,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952596065] [2022-07-13 10:22:23,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952596065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:22:23,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:22:23,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:22:23,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564919402] [2022-07-13 10:22:23,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:22:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:22:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:22:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:22:23,277 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) [2022-07-13 10:22:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:23,315 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2022-07-13 10:22:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:22:23,317 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 [2022-07-13 10:22:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:23,321 INFO L225 Difference]: With dead ends: 63 [2022-07-13 10:22:23,321 INFO L226 Difference]: Without dead ends: 30 [2022-07-13 10:22:23,323 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 [2022-07-13 10:22:23,326 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 [2022-07-13 10:22:23,326 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] [2022-07-13 10:22:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-13 10:22:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-13 10:22:23,354 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) [2022-07-13 10:22:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-13 10:22:23,355 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 29 [2022-07-13 10:22:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:23,356 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-13 10:22:23,356 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) [2022-07-13 10:22:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-13 10:22:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 10:22:23,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:23,358 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] [2022-07-13 10:22:23,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:22:23,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:23,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1932942338, now seen corresponding path program 1 times [2022-07-13 10:22:23,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:23,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071866187] [2022-07-13 10:22:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:23,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 10:22:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 10:22:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 10:22:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 10:22:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:23,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071866187] [2022-07-13 10:22:23,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071866187] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:23,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179373804] [2022-07-13 10:22:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:23,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:23,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:23,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:23,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:22:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:23,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:22:23,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:22:23,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:22:23,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179373804] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:23,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:23,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-07-13 10:22:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854818218] [2022-07-13 10:22:23,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:23,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 10:22:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 10:22:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 10:22:23,626 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) [2022-07-13 10:22:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:23,713 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-07-13 10:22:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 10:22:23,713 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 [2022-07-13 10:22:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:23,714 INFO L225 Difference]: With dead ends: 62 [2022-07-13 10:22:23,714 INFO L226 Difference]: Without dead ends: 39 [2022-07-13 10:22:23,715 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 [2022-07-13 10:22:23,716 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 [2022-07-13 10:22:23,716 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] [2022-07-13 10:22:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-13 10:22:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-13 10:22:23,720 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) [2022-07-13 10:22:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-13 10:22:23,721 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 31 [2022-07-13 10:22:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:23,722 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-13 10:22:23,722 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) [2022-07-13 10:22:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-13 10:22:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 10:22:23,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:23,723 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] [2022-07-13 10:22:23,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 10:22:23,945 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 [2022-07-13 10:22:23,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:23,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:23,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1452282271, now seen corresponding path program 1 times [2022-07-13 10:22:23,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:23,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717655239] [2022-07-13 10:22:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 10:22:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:22:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 10:22:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 10:22:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:24,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717655239] [2022-07-13 10:22:24,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717655239] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:24,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51782927] [2022-07-13 10:22:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:24,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:24,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:24,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:24,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:22:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 10:22:24,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 10:22:24,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:22:24,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51782927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:22:24,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:22:24,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-07-13 10:22:24,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292332874] [2022-07-13 10:22:24,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:22:24,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:22:24,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:22:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:22:24,241 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) [2022-07-13 10:22:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:24,264 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-07-13 10:22:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:22:24,264 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 [2022-07-13 10:22:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:24,265 INFO L225 Difference]: With dead ends: 52 [2022-07-13 10:22:24,265 INFO L226 Difference]: Without dead ends: 34 [2022-07-13 10:22:24,266 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 [2022-07-13 10:22:24,267 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 [2022-07-13 10:22:24,267 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] [2022-07-13 10:22:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-13 10:22:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-13 10:22:24,272 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) [2022-07-13 10:22:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-07-13 10:22:24,272 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 45 [2022-07-13 10:22:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:24,274 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-07-13 10:22:24,274 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) [2022-07-13 10:22:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-07-13 10:22:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 10:22:24,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:24,275 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] [2022-07-13 10:22:24,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:24,488 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 [2022-07-13 10:22:24,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1430162787, now seen corresponding path program 1 times [2022-07-13 10:22:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249680409] [2022-07-13 10:22:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 10:22:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:22:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 10:22:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 10:22:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249680409] [2022-07-13 10:22:24,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249680409] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:24,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764866512] [2022-07-13 10:22:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:24,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:24,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:22:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:24,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 10:22:24,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 10:22:24,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 10:22:25,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764866512] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:25,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:25,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-07-13 10:22:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287192832] [2022-07-13 10:22:25,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 10:22:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 10:22:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 10:22:25,131 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) [2022-07-13 10:22:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:25,225 INFO L93 Difference]: Finished difference Result 88 states and 116 transitions. [2022-07-13 10:22:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 10:22:25,226 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 [2022-07-13 10:22:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:25,228 INFO L225 Difference]: With dead ends: 88 [2022-07-13 10:22:25,228 INFO L226 Difference]: Without dead ends: 62 [2022-07-13 10:22:25,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-13 10:22:25,229 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-07-13 10:22:25,230 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] [2022-07-13 10:22:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-13 10:22:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-07-13 10:22:25,236 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) [2022-07-13 10:22:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-07-13 10:22:25,237 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 47 [2022-07-13 10:22:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:25,237 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-07-13 10:22:25,238 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) [2022-07-13 10:22:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-07-13 10:22:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 10:22:25,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:25,239 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] [2022-07-13 10:22:25,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:25,454 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 [2022-07-13 10:22:25,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1484367723, now seen corresponding path program 1 times [2022-07-13 10:22:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:25,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295086929] [2022-07-13 10:22:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 10:22:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:22:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 10:22:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:22:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295086929] [2022-07-13 10:22:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295086929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851450262] [2022-07-13 10:22:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:25,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:25,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 10:22:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:26,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-13 10:22:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:26,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:26,132 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 [2022-07-13 10:22:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:26,300 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:26,300 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 [2022-07-13 10:22:26,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:26,355 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:26,356 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 [2022-07-13 10:22:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:22:26,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:27,267 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 [2022-07-13 10:22:27,271 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 [2022-07-13 10:22:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:22:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851450262] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:27,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:27,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-07-13 10:22:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271398799] [2022-07-13 10:22:27,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:27,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 10:22:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 10:22:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2022-07-13 10:22:27,435 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) [2022-07-13 10:22:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:30,464 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2022-07-13 10:22:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-13 10:22:30,465 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 [2022-07-13 10:22:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:30,468 INFO L225 Difference]: With dead ends: 271 [2022-07-13 10:22:30,468 INFO L226 Difference]: Without dead ends: 219 [2022-07-13 10:22:30,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3246 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1410, Invalid=10362, Unknown=0, NotChecked=0, Total=11772 [2022-07-13 10:22:30,473 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 [2022-07-13 10:22:30,473 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] [2022-07-13 10:22:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-13 10:22:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2022-07-13 10:22:30,502 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) [2022-07-13 10:22:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 228 transitions. [2022-07-13 10:22:30,507 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 228 transitions. Word has length 48 [2022-07-13 10:22:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:30,507 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 228 transitions. [2022-07-13 10:22:30,508 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) [2022-07-13 10:22:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 228 transitions. [2022-07-13 10:22:30,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 10:22:30,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:30,515 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] [2022-07-13 10:22:30,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:30,727 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 [2022-07-13 10:22:30,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 779674309, now seen corresponding path program 2 times [2022-07-13 10:22:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841794669] [2022-07-13 10:22:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 10:22:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 10:22:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:30,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 10:22:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 10:22:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:30,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841794669] [2022-07-13 10:22:30,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841794669] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:30,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64216769] [2022-07-13 10:22:30,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:22:30,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:30,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:30,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:31,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 10:22:31,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:22:31,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:22:31,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-13 10:22:31,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:31,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:31,283 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:31,283 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 [2022-07-13 10:22:31,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:31,422 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:31,423 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 [2022-07-13 10:22:31,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:31,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:22:31,476 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:31,477 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 [2022-07-13 10:22:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 10:22:31,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:32,009 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 [2022-07-13 10:22:32,022 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-13 10:22:32,022 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 [2022-07-13 10:22:32,176 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 [2022-07-13 10:22:32,180 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-13 10:22:32,180 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 [2022-07-13 10:22:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 10:22:32,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64216769] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:32,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:32,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 14] total 43 [2022-07-13 10:22:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313151941] [2022-07-13 10:22:32,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-13 10:22:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-13 10:22:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 10:22:32,183 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) [2022-07-13 10:22:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:34,202 INFO L93 Difference]: Finished difference Result 320 states and 441 transitions. [2022-07-13 10:22:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-13 10:22:34,203 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 [2022-07-13 10:22:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:34,205 INFO L225 Difference]: With dead ends: 320 [2022-07-13 10:22:34,207 INFO L226 Difference]: Without dead ends: 236 [2022-07-13 10:22:34,209 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 [2022-07-13 10:22:34,210 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 10:22:34,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 357 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1116 Invalid, 0 Unknown, 378 Unchecked, 0.6s Time] [2022-07-13 10:22:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-13 10:22:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 146. [2022-07-13 10:22:34,238 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) [2022-07-13 10:22:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 212 transitions. [2022-07-13 10:22:34,242 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 212 transitions. Word has length 48 [2022-07-13 10:22:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:34,242 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 212 transitions. [2022-07-13 10:22:34,243 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) [2022-07-13 10:22:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 212 transitions. [2022-07-13 10:22:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 10:22:34,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:34,247 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] [2022-07-13 10:22:34,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:34,465 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 [2022-07-13 10:22:34,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:34,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:34,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1369061923, now seen corresponding path program 1 times [2022-07-13 10:22:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:34,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108417151] [2022-07-13 10:22:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 10:22:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 10:22:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 10:22:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 10:22:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:34,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108417151] [2022-07-13 10:22:34,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108417151] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:34,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450793377] [2022-07-13 10:22:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:34,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:34,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:34,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:34,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 10:22:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:34,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 10:22:34,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 10:22:34,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 10:22:35,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450793377] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:35,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:35,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 18 [2022-07-13 10:22:35,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962297262] [2022-07-13 10:22:35,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 10:22:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 10:22:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-13 10:22:35,062 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) [2022-07-13 10:22:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:35,269 INFO L93 Difference]: Finished difference Result 246 states and 396 transitions. [2022-07-13 10:22:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 10:22:35,270 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 [2022-07-13 10:22:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:35,273 INFO L225 Difference]: With dead ends: 246 [2022-07-13 10:22:35,274 INFO L226 Difference]: Without dead ends: 242 [2022-07-13 10:22:35,274 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 [2022-07-13 10:22:35,275 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 [2022-07-13 10:22:35,275 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] [2022-07-13 10:22:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-13 10:22:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 197. [2022-07-13 10:22:35,302 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) [2022-07-13 10:22:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 319 transitions. [2022-07-13 10:22:35,304 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 319 transitions. Word has length 50 [2022-07-13 10:22:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:35,304 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 319 transitions. [2022-07-13 10:22:35,304 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) [2022-07-13 10:22:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 319 transitions. [2022-07-13 10:22:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 10:22:35,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:35,306 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] [2022-07-13 10:22:35,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:35,524 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 [2022-07-13 10:22:35,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:35,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:35,525 INFO L85 PathProgramCache]: Analyzing trace with hash 605481843, now seen corresponding path program 3 times [2022-07-13 10:22:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:35,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666591062] [2022-07-13 10:22:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:22:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 10:22:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 10:22:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 10:22:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:35,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666591062] [2022-07-13 10:22:35,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666591062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:35,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970900896] [2022-07-13 10:22:35,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:22:35,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:35,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:35,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:35,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 10:22:35,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-13 10:22:35,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:22:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 10:22:35,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 10:22:35,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 10:22:35,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970900896] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:35,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:35,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 15 [2022-07-13 10:22:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206495473] [2022-07-13 10:22:35,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:35,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:22:35,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:22:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:22:35,805 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) [2022-07-13 10:22:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:35,993 INFO L93 Difference]: Finished difference Result 434 states and 707 transitions. [2022-07-13 10:22:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 10:22:35,993 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 [2022-07-13 10:22:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:35,996 INFO L225 Difference]: With dead ends: 434 [2022-07-13 10:22:35,996 INFO L226 Difference]: Without dead ends: 334 [2022-07-13 10:22:35,997 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 [2022-07-13 10:22:35,997 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 [2022-07-13 10:22:35,997 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] [2022-07-13 10:22:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-13 10:22:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2022-07-13 10:22:36,018 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) [2022-07-13 10:22:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 454 transitions. [2022-07-13 10:22:36,020 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 454 transitions. Word has length 50 [2022-07-13 10:22:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:36,021 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 454 transitions. [2022-07-13 10:22:36,021 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) [2022-07-13 10:22:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 454 transitions. [2022-07-13 10:22:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 10:22:36,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:36,023 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] [2022-07-13 10:22:36,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:36,241 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 [2022-07-13 10:22:36,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash -217318692, now seen corresponding path program 1 times [2022-07-13 10:22:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:36,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120200463] [2022-07-13 10:22:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 10:22:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 10:22:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 10:22:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:22:36,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:22:36,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120200463] [2022-07-13 10:22:36,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120200463] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:22:36,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985312395] [2022-07-13 10:22:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:22:36,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:22:36,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:22:36,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 10:22:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:22:36,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-13 10:22:36,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:22:36,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:36,804 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 [2022-07-13 10:22:36,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:36,946 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:36,947 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 [2022-07-13 10:22:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:22:36,988 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:22:36,988 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 [2022-07-13 10:22:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:22:37,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:22:37,781 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 [2022-07-13 10:22:37,783 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 [2022-07-13 10:22:37,910 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 [2022-07-13 10:22:37,912 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 [2022-07-13 10:22:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 10:22:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985312395] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:22:37,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:22:37,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 15] total 49 [2022-07-13 10:22:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065372466] [2022-07-13 10:22:37,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:22:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 10:22:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:22:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 10:22:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-07-13 10:22:37,915 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) [2022-07-13 10:22:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:22:41,086 INFO L93 Difference]: Finished difference Result 658 states and 1086 transitions. [2022-07-13 10:22:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-13 10:22:41,087 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 [2022-07-13 10:22:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:22:41,093 INFO L225 Difference]: With dead ends: 658 [2022-07-13 10:22:41,093 INFO L226 Difference]: Without dead ends: 415 [2022-07-13 10:22:41,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=910, Invalid=8020, Unknown=0, NotChecked=0, Total=8930 [2022-07-13 10:22:41,098 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 394 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-13 10:22:41,098 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] [2022-07-13 10:22:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-13 10:22:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 347. [2022-07-13 10:22:41,132 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) [2022-07-13 10:22:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 622 transitions. [2022-07-13 10:22:41,136 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 622 transitions. Word has length 52 [2022-07-13 10:22:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:22:41,137 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 622 transitions. [2022-07-13 10:22:41,137 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) [2022-07-13 10:22:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 622 transitions. [2022-07-13 10:22:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 10:22:41,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:22:41,140 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] [2022-07-13 10:22:41,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 10:22:41,347 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 [2022-07-13 10:22:41,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:22:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:22:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash 568180046, now seen corresponding path program 1 times [2022-07-13 10:22:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:22:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489003972] [2022-07-13 10:22:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:22:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:22:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 10:22:41,373 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 10:22:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 10:22:41,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 10:22:41,407 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 10:22:41,408 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 10:22:41,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 10:22:41,411 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:22:41,413 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 10:22:41,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:22:41 BoogieIcfgContainer [2022-07-13 10:22:41,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 10:22:41,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 10:22:41,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 10:22:41,469 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 10:22:41,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:22:22" (3/4) ... [2022-07-13 10:22:41,471 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 10:22:41,516 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 10:22:41,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 10:22:41,516 INFO L158 Benchmark]: Toolchain (without parser) took 19095.10ms. Allocated memory was 102.8MB in the beginning and 218.1MB in the end (delta: 115.3MB). Free memory was 66.0MB in the beginning and 69.0MB in the end (delta: -3.0MB). Peak memory consumption was 113.6MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,517 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 10:22:41,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.69ms. Allocated memory is still 102.8MB. Free memory was 65.8MB in the beginning and 78.5MB in the end (delta: -12.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.67ms. Allocated memory is still 102.8MB. Free memory was 78.5MB in the beginning and 76.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,517 INFO L158 Benchmark]: Boogie Preprocessor took 31.34ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 75.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,517 INFO L158 Benchmark]: RCFGBuilder took 276.89ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 63.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,519 INFO L158 Benchmark]: TraceAbstraction took 18508.34ms. Allocated memory was 102.8MB in the beginning and 218.1MB in the end (delta: 115.3MB). Free memory was 62.9MB in the beginning and 72.2MB in the end (delta: -9.2MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,520 INFO L158 Benchmark]: Witness Printer took 47.26ms. Allocated memory is still 218.1MB. Free memory was 72.2MB in the beginning and 69.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 10:22:41,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.69ms. Allocated memory is still 102.8MB. Free memory was 65.8MB in the beginning and 78.5MB in the end (delta: -12.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.67ms. Allocated memory is still 102.8MB. Free memory was 78.5MB in the beginning and 76.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.34ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 75.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.89ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 63.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18508.34ms. Allocated memory was 102.8MB in the beginning and 218.1MB in the end (delta: 115.3MB). Free memory was 62.9MB in the beginning and 72.2MB in the end (delta: -9.2MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. * Witness Printer took 47.26ms. Allocated memory is still 218.1MB. Free memory was 72.2MB in the beginning and 69.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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