./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/large_const.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/loop-invgen/large_const.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 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:41:14,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:41:14,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:41:14,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:41:14,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:41:14,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:41:14,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:41:14,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:41:14,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:41:14,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:41:14,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:41:14,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:41:14,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:41:14,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:41:14,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:41:14,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:41:14,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:41:14,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:41:14,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:41:14,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:41:14,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:41:14,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:41:14,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:41:14,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:41:14,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:41:14,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:41:14,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:41:14,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:41:14,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:41:14,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:41:14,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:41:14,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:41:14,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:41:14,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:41:14,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:41:14,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:41:14,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:41:14,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:41:14,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:41:14,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:41:14,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:41:14,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:41:15,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:41:15,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:41:15,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:41:15,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:41:15,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:41:15,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:41:15,004 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:41:15,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:41:15,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:41:15,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:41:15,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:41:15,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:41:15,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:41:15,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:41:15,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:41:15,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:41:15,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:41:15,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:41:15,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 [2021-08-26 03:41:15,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:41:15,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:41:15,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:41:15,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:41:15,292 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:41:15,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/large_const.i [2021-08-26 03:41:15,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f3bd09d/8c1dcda1b520484a99d11ae1faaea158/FLAGada3968fc [2021-08-26 03:41:15,704 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:41:15,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i [2021-08-26 03:41:15,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f3bd09d/8c1dcda1b520484a99d11ae1faaea158/FLAGada3968fc [2021-08-26 03:41:16,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f3bd09d/8c1dcda1b520484a99d11ae1faaea158 [2021-08-26 03:41:16,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:41:16,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:41:16,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:41:16,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:41:16,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:41:16,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aeb9b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16, skipping insertion in model container [2021-08-26 03:41:16,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:41:16,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:41:16,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-08-26 03:41:16,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:41:16,263 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:41:16,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-08-26 03:41:16,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:41:16,290 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:41:16,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16 WrapperNode [2021-08-26 03:41:16,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:41:16,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:41:16,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:41:16,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:41:16,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:41:16,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:41:16,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:41:16,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:41:16,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:41:16,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:41:16,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:41:16,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:41:16,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (1/1) ... [2021-08-26 03:41:16,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:41:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:41:16,370 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) [2021-08-26 03:41:16,401 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 [2021-08-26 03:41:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:41:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:41:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:41:16,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:41:16,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:41:16,643 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 03:41:16,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:41:16 BoogieIcfgContainer [2021-08-26 03:41:16,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:41:16,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:41:16,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:41:16,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:41:16,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:41:16" (1/3) ... [2021-08-26 03:41:16,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694dae85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:41:16, skipping insertion in model container [2021-08-26 03:41:16,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:16" (2/3) ... [2021-08-26 03:41:16,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694dae85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:41:16, skipping insertion in model container [2021-08-26 03:41:16,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:41:16" (3/3) ... [2021-08-26 03:41:16,650 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-08-26 03:41:16,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:41:16,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:41:16,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:41:16,702 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 03:41:16,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:41:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 03:41:16,736 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:16,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:16,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash 200473929, now seen corresponding path program 1 times [2021-08-26 03:41:16,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:16,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691341029] [2021-08-26 03:41:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:16,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:16,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:16,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691341029] [2021-08-26 03:41:16,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691341029] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:41:16,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:41:16,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 03:41:16,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647979141] [2021-08-26 03:41:16,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 03:41:16,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:16,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 03:41:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 03:41:16,879 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:16,888 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-08-26 03:41:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 03:41:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 03:41:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:16,894 INFO L225 Difference]: With dead ends: 27 [2021-08-26 03:41:16,894 INFO L226 Difference]: Without dead ends: 13 [2021-08-26 03:41:16,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 03:41:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-26 03:41:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-26 03:41:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-08-26 03:41:16,916 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-08-26 03:41:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:16,916 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-08-26 03:41:16,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-08-26 03:41:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 03:41:16,918 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:16,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:16,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:41:16,918 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash 182003509, now seen corresponding path program 1 times [2021-08-26 03:41:16,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:16,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421338047] [2021-08-26 03:41:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:16,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:17,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:17,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421338047] [2021-08-26 03:41:17,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421338047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:41:17,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:41:17,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 03:41:17,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922115931] [2021-08-26 03:41:17,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 03:41:17,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 03:41:17,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:41:17,065 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:17,118 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-08-26 03:41:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:41:17,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 03:41:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:17,119 INFO L225 Difference]: With dead ends: 21 [2021-08-26 03:41:17,119 INFO L226 Difference]: Without dead ends: 14 [2021-08-26 03:41:17,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:41:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-26 03:41:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-08-26 03:41:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-08-26 03:41:17,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2021-08-26 03:41:17,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:17,126 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-08-26 03:41:17,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-08-26 03:41:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 03:41:17,127 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:17,127 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:17,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:41:17,127 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -52175062, now seen corresponding path program 1 times [2021-08-26 03:41:17,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:17,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014053306] [2021-08-26 03:41:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:17,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:17,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:17,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014053306] [2021-08-26 03:41:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014053306] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:17,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24832421] [2021-08-26 03:41:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:17,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:41:17,241 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) [2021-08-26 03:41:17,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:41:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:17,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 03:41:17,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:41:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:17,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24832421] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:17,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:41:17,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-08-26 03:41:17,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211802730] [2021-08-26 03:41:17,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 03:41:17,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 03:41:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 03:41:17,485 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:17,628 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-08-26 03:41:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 03:41:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 03:41:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:17,629 INFO L225 Difference]: With dead ends: 33 [2021-08-26 03:41:17,629 INFO L226 Difference]: Without dead ends: 31 [2021-08-26 03:41:17,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:41:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-26 03:41:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2021-08-26 03:41:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-08-26 03:41:17,633 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-08-26 03:41:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:17,633 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-08-26 03:41:17,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-08-26 03:41:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:41:17,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:17,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:17,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:41:17,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:17,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash 566429229, now seen corresponding path program 1 times [2021-08-26 03:41:17,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:17,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891016840] [2021-08-26 03:41:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:17,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:17,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:17,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891016840] [2021-08-26 03:41:17,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891016840] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:17,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722172841] [2021-08-26 03:41:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:17,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:41:17,907 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) [2021-08-26 03:41:17,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:41:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:17,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 03:41:17,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:41:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:18,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722172841] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:18,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:41:18,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-08-26 03:41:18,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019545568] [2021-08-26 03:41:18,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 03:41:18,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:18,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 03:41:18,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 03:41:18,119 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:18,245 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2021-08-26 03:41:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 03:41:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 03:41:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:18,246 INFO L225 Difference]: With dead ends: 39 [2021-08-26 03:41:18,246 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 03:41:18,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:41:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 03:41:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2021-08-26 03:41:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-08-26 03:41:18,250 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 12 [2021-08-26 03:41:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:18,250 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-08-26 03:41:18,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2021-08-26 03:41:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:41:18,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:18,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:18,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:41:18,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-26 03:41:18,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:18,466 INFO L82 PathProgramCache]: Analyzing trace with hash 623687531, now seen corresponding path program 1 times [2021-08-26 03:41:18,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:18,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298629424] [2021-08-26 03:41:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:18,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:18,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:18,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298629424] [2021-08-26 03:41:18,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298629424] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:18,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912334276] [2021-08-26 03:41:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:18,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:18,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:41:18,522 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) [2021-08-26 03:41:18,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:41:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:18,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 03:41:18,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:41:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:18,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912334276] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:18,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:41:18,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-08-26 03:41:18,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822318373] [2021-08-26 03:41:18,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 03:41:18,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 03:41:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 03:41:18,670 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:18,759 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-08-26 03:41:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 03:41:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 03:41:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:18,761 INFO L225 Difference]: With dead ends: 43 [2021-08-26 03:41:18,761 INFO L226 Difference]: Without dead ends: 41 [2021-08-26 03:41:18,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:41:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-26 03:41:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2021-08-26 03:41:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-08-26 03:41:18,764 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 12 [2021-08-26 03:41:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:18,765 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-08-26 03:41:18,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-08-26 03:41:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 03:41:18,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:18,765 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:18,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:41:18,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:18,981 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 435730244, now seen corresponding path program 1 times [2021-08-26 03:41:18,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:18,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786334250] [2021-08-26 03:41:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:18,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:19,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:19,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786334250] [2021-08-26 03:41:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786334250] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:19,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250919263] [2021-08-26 03:41:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:19,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:41:19,041 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) [2021-08-26 03:41:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 03:41:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:19,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 03:41:19,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:41:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:19,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250919263] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:41:19,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 03:41:19,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-08-26 03:41:19,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344731489] [2021-08-26 03:41:19,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 03:41:19,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 03:41:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 03:41:19,195 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:19,208 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2021-08-26 03:41:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:41:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 03:41:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:19,209 INFO L225 Difference]: With dead ends: 37 [2021-08-26 03:41:19,209 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 03:41:19,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 03:41:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 03:41:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-26 03:41:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-08-26 03:41:19,213 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2021-08-26 03:41:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:19,213 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-08-26 03:41:19,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-08-26 03:41:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 03:41:19,214 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:41:19,214 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:41:19,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 03:41:19,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:19,421 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:41:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:41:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 521583522, now seen corresponding path program 1 times [2021-08-26 03:41:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:41:19,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700378521] [2021-08-26 03:41:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:19,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:41:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:19,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:41:19,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700378521] [2021-08-26 03:41:19,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700378521] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:41:19,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622606862] [2021-08-26 03:41:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:41:19,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:19,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:41:19,463 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) [2021-08-26 03:41:19,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 03:41:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:41:19,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 03:41:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:41:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:41:19,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622606862] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:41:19,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 03:41:19,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-08-26 03:41:19,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473918558] [2021-08-26 03:41:19,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 03:41:19,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:41:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 03:41:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:41:19,584 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:41:19,592 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2021-08-26 03:41:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:41:19,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 03:41:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:41:19,593 INFO L225 Difference]: With dead ends: 30 [2021-08-26 03:41:19,593 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:41:19,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:41:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:41:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:41:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:41:19,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-26 03:41:19,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:41:19,594 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:41:19,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:41:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:41:19,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:41:19,597 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:41:19,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 03:41:19,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:41:19,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:41:19,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:41:19,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:41:19,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:41:19,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:41:19,990 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-08-26 03:41:19,991 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-26 03:41:19,991 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 43) no Hoare annotation was computed. [2021-08-26 03:41:19,991 INFO L853 garLoopResultBuilder]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse1 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse2 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~i~0 0) .cse1 .cse2) (and (< ULTIMATE.start_main_~n~0 2) .cse0 (<= 1 ULTIMATE.start_main_~i~0) (<= 2000 ULTIMATE.start_main_~k~0) .cse1 .cse2))) [2021-08-26 03:41:19,991 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:41:19,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:41:19,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:41:19,992 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-26 03:41:19,992 INFO L857 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-08-26 03:41:19,994 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:41:19,994 INFO L853 garLoopResultBuilder]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse2 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse3 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and .cse0 .cse1 (<= 2000 ULTIMATE.start_main_~k~0) .cse2 .cse3 (<= 0 ULTIMATE.start_main_~j~0)) (and .cse0 .cse1 (<= 1 ULTIMATE.start_main_~j~0) .cse2 .cse3) (and (= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~j~0 0)))) [2021-08-26 03:41:19,994 INFO L857 garLoopResultBuilder]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2021-08-26 03:41:19,994 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-08-26 03:41:19,994 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2021-08-26 03:41:19,994 INFO L860 garLoopResultBuilder]: At program point L51(lines 24 52) the Hoare annotation is: true [2021-08-26 03:41:19,995 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-26 03:41:19,995 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (< ULTIMATE.start_main_~n~0 2) (<= 4000 ULTIMATE.start_main_~c1~0) (<= 2000 ULTIMATE.start_main_~c2~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 10000 ULTIMATE.start_main_~c3~0) (<= 0 ULTIMATE.start_main_~j~0)) [2021-08-26 03:41:19,998 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:41:20,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:41:20 BoogieIcfgContainer [2021-08-26 03:41:20,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:41:20,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:41:20,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:41:20,009 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:41:20,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:41:16" (3/4) ... [2021-08-26 03:41:20,011 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:41:20,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-26 03:41:20,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:41:20,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 03:41:20,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:41:20,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:41:20,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:41:20,059 INFO L168 Benchmark]: Toolchain (without parser) took 3922.34 ms. Allocated memory was 48.2 MB in the beginning and 79.7 MB in the end (delta: 31.5 MB). Free memory was 24.8 MB in the beginning and 28.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,059 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 48.2 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:41:20,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.75 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 24.6 MB in the beginning and 42.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.27 ms. Allocated memory is still 65.0 MB. Free memory was 42.8 MB in the beginning and 49.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,060 INFO L168 Benchmark]: Boogie Preprocessor took 24.20 ms. Allocated memory is still 65.0 MB. Free memory was 49.5 MB in the beginning and 48.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,061 INFO L168 Benchmark]: RCFGBuilder took 301.30 ms. Allocated memory is still 65.0 MB. Free memory was 48.3 MB in the beginning and 48.2 MB in the end (delta: 49.0 kB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,061 INFO L168 Benchmark]: TraceAbstraction took 3362.08 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 47.7 MB in the beginning and 30.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,061 INFO L168 Benchmark]: Witness Printer took 49.75 ms. Allocated memory is still 79.7 MB. Free memory was 30.9 MB in the beginning and 28.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:41:20,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 48.2 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 153.75 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 24.6 MB in the beginning and 42.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.27 ms. Allocated memory is still 65.0 MB. Free memory was 42.8 MB in the beginning and 49.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.20 ms. Allocated memory is still 65.0 MB. Free memory was 49.5 MB in the beginning and 48.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 301.30 ms. Allocated memory is still 65.0 MB. Free memory was 48.3 MB in the beginning and 48.2 MB in the end (delta: 49.0 kB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3362.08 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 47.7 MB in the beginning and 30.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.75 ms. Allocated memory is still 79.7 MB. Free memory was 30.9 MB in the beginning and 28.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3300.7ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 15.6ms, AutomataDifference: 478.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 185.1ms, InitialAbstractionConstructionTime: 21.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 114 SDtfs, 124 SDslu, 198 SDs, 0 SdLazy, 216 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 153.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 407.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 103 HoareAnnotationTreeSize, 4 FomulaSimplifications, 572 FormulaSimplificationTreeSizeReduction, 35.5ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 256 FormulaSimplificationTreeSizeReductionInter, 144.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 55.3ms SsaConstructionTime, 164.9ms SatisfiabilityAnalysisTime, 903.5ms InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 12 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 12/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((n < 2 && 4000 <= c1) && 2000 <= c2) && !(0 == cond)) && 10000 <= c3) && 0 <= j - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) || (((((n < 2 && 4000 <= c1) && 1 <= i) && 2000 <= k) && 2000 <= c2) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((n < 2 && 4000 <= c1) && 2000 <= k) && 2000 <= c2) && 10000 <= c3) && 0 <= j) || ((((n < 2 && 4000 <= c1) && 1 <= j) && 2000 <= c2) && 10000 <= c3)) || ((i == 0 && n <= 0) && j == 0) RESULT: Ultimate proved your program to be correct! [2021-08-26 03:41:20,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...