./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/AllInterval-006.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/xcsp/AllInterval-006.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50c5e818ba05d4e8fa241dc9220a809d016175eb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 19:15:29,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 19:15:29,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 19:15:29,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 19:15:29,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 19:15:29,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 19:15:29,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 19:15:29,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 19:15:29,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 19:15:29,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 19:15:29,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 19:15:29,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 19:15:29,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 19:15:29,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 19:15:29,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 19:15:29,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 19:15:29,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 19:15:29,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 19:15:29,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 19:15:29,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 19:15:29,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 19:15:29,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 19:15:29,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 19:15:29,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 19:15:29,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 19:15:29,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 19:15:29,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 19:15:29,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 19:15:29,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 19:15:29,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 19:15:29,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 19:15:29,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 19:15:29,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 19:15:29,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 19:15:29,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 19:15:29,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 19:15:29,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 19:15:29,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 19:15:29,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 19:15:29,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 19:15:29,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 19:15:29,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 19:15:30,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 19:15:30,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 19:15:30,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 19:15:30,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 19:15:30,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 19:15:30,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 19:15:30,030 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 19:15:30,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 19:15:30,031 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 19:15:30,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 19:15:30,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 19:15:30,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 19:15:30,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 19:15:30,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 19:15:30,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 19:15:30,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 19:15:30,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 19:15:30,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 19:15:30,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 19:15:30,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 19:15:30,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 19:15:30,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 19:15:30,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 19:15:30,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 19:15:30,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 19:15:30,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 19:15:30,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 19:15:30,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 19:15:30,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 19:15:30,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 19:15:30,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50c5e818ba05d4e8fa241dc9220a809d016175eb [2021-08-29 19:15:30,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 19:15:30,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 19:15:30,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 19:15:30,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 19:15:30,427 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 19:15:30,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/AllInterval-006.c [2021-08-29 19:15:30,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63457da1e/a257b024ae9047a09da8ae6b2d041327/FLAG54e46e7d5 [2021-08-29 19:15:30,911 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 19:15:30,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/AllInterval-006.c [2021-08-29 19:15:30,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63457da1e/a257b024ae9047a09da8ae6b2d041327/FLAG54e46e7d5 [2021-08-29 19:15:30,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63457da1e/a257b024ae9047a09da8ae6b2d041327 [2021-08-29 19:15:30,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 19:15:30,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 19:15:30,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 19:15:30,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 19:15:30,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 19:15:30,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:15:30" (1/1) ... [2021-08-29 19:15:30,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260bcbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:30, skipping insertion in model container [2021-08-29 19:15:30,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:15:30" (1/1) ... [2021-08-29 19:15:30,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 19:15:30,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 19:15:31,164 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/xcsp/AllInterval-006.c[3098,3111] [2021-08-29 19:15:31,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 19:15:31,181 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 19:15:31,238 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/xcsp/AllInterval-006.c[3098,3111] [2021-08-29 19:15:31,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 19:15:31,258 INFO L208 MainTranslator]: Completed translation [2021-08-29 19:15:31,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31 WrapperNode [2021-08-29 19:15:31,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 19:15:31,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 19:15:31,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 19:15:31,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 19:15:31,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 19:15:31,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 19:15:31,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 19:15:31,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 19:15:31,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 19:15:31,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 19:15:31,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 19:15:31,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 19:15:31,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (1/1) ... [2021-08-29 19:15:31,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 19:15:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 19:15:31,422 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) [2021-08-29 19:15:31,454 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 [2021-08-29 19:15:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 19:15:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 19:15:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 19:15:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 19:15:31,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 19:15:31,760 INFO L299 CfgBuilder]: Removed 108 assume(true) statements. [2021-08-29 19:15:31,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:15:31 BoogieIcfgContainer [2021-08-29 19:15:31,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 19:15:31,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 19:15:31,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 19:15:31,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 19:15:31,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:15:30" (1/3) ... [2021-08-29 19:15:31,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72582f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:15:31, skipping insertion in model container [2021-08-29 19:15:31,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:15:31" (2/3) ... [2021-08-29 19:15:31,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72582f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:15:31, skipping insertion in model container [2021-08-29 19:15:31,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:15:31" (3/3) ... [2021-08-29 19:15:31,770 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-006.c [2021-08-29 19:15:31,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 19:15:31,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 19:15:31,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 19:15:31,825 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 [2021-08-29 19:15:31,826 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 19:15:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 119 states have internal predecessors, (176), 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) [2021-08-29 19:15:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-29 19:15:31,856 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 19:15:31,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 19:15:31,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 19:15:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 19:15:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1389823289, now seen corresponding path program 1 times [2021-08-29 19:15:31,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 19:15:31,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223933637] [2021-08-29 19:15:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 19:15:31,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 19:15:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 19:15:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 19:15:32,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 19:15:32,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223933637] [2021-08-29 19:15:32,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223933637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 19:15:32,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 19:15:32,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 19:15:32,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499807088] [2021-08-29 19:15:32,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 19:15:32,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 19:15:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 19:15:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 19:15:32,199 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 119 states have internal predecessors, (176), 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 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2021-08-29 19:15:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 19:15:32,425 INFO L93 Difference]: Finished difference Result 234 states and 346 transitions. [2021-08-29 19:15:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 19:15:32,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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 116 [2021-08-29 19:15:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 19:15:32,434 INFO L225 Difference]: With dead ends: 234 [2021-08-29 19:15:32,435 INFO L226 Difference]: Without dead ends: 117 [2021-08-29 19:15:32,438 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 19:15:32,441 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.46ms IncrementalHoareTripleChecker+Time [2021-08-29 19:15:32,442 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 185.46ms Time] [2021-08-29 19:15:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-29 19:15:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-29 19:15:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 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) [2021-08-29 19:15:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-08-29 19:15:32,475 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 116 [2021-08-29 19:15:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 19:15:32,476 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-08-29 19:15:32,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2021-08-29 19:15:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-08-29 19:15:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-29 19:15:32,479 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 19:15:32,479 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 19:15:32,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 19:15:32,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 19:15:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 19:15:32,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1985819869, now seen corresponding path program 1 times [2021-08-29 19:15:32,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 19:15:32,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92704514] [2021-08-29 19:15:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 19:15:32,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 19:15:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 19:15:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 19:15:35,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 19:15:35,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92704514] [2021-08-29 19:15:35,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92704514] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 19:15:35,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 19:15:35,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-08-29 19:15:35,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835220288] [2021-08-29 19:15:35,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-29 19:15:35,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 19:15:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-29 19:15:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2021-08-29 19:15:35,349 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 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) [2021-08-29 19:15:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 19:15:41,309 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2021-08-29 19:15:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-29 19:15:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 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 116 [2021-08-29 19:15:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 19:15:41,316 INFO L225 Difference]: With dead ends: 163 [2021-08-29 19:15:41,316 INFO L226 Difference]: Without dead ends: 159 [2021-08-29 19:15:41,323 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 5757.80ms TimeCoverageRelationStatistics Valid=1207, Invalid=3215, Unknown=0, NotChecked=0, Total=4422 [2021-08-29 19:15:41,325 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1248 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1094.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.87ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1334.66ms IncrementalHoareTripleChecker+Time [2021-08-29 19:15:41,326 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1248 Valid, 0 Invalid, 2098 Unknown, 0 Unchecked, 16.87ms Time], IncrementalHoareTripleChecker [129 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1334.66ms Time] [2021-08-29 19:15:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-29 19:15:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 129. [2021-08-29 19:15:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0546875) internal successors, (135), 128 states have internal predecessors, (135), 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) [2021-08-29 19:15:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-08-29 19:15:41,344 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 116 [2021-08-29 19:15:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 19:15:41,346 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-08-29 19:15:41,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 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) [2021-08-29 19:15:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-08-29 19:15:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-29 19:15:41,354 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 19:15:41,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 19:15:41,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 19:15:41,356 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 19:15:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 19:15:41,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1985879451, now seen corresponding path program 1 times [2021-08-29 19:15:41,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 19:15:41,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477686781] [2021-08-29 19:15:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 19:15:41,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 19:15:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 19:15:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 19:15:44,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 19:15:44,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477686781] [2021-08-29 19:15:44,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477686781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 19:15:44,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 19:15:44,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-08-29 19:15:44,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074930800] [2021-08-29 19:15:44,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-29 19:15:44,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 19:15:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-29 19:15:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-08-29 19:15:44,088 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 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) [2021-08-29 19:15:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 19:15:50,158 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2021-08-29 19:15:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-29 19:15:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 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 116 [2021-08-29 19:15:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 19:15:50,160 INFO L225 Difference]: With dead ends: 160 [2021-08-29 19:15:50,160 INFO L226 Difference]: Without dead ends: 152 [2021-08-29 19:15:50,162 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 6179.13ms TimeCoverageRelationStatistics Valid=952, Invalid=2470, Unknown=0, NotChecked=0, Total=3422 [2021-08-29 19:15:50,163 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1129 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 869.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.18ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1016.31ms IncrementalHoareTripleChecker+Time [2021-08-29 19:15:50,163 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 0 Invalid, 1635 Unknown, 0 Unchecked, 8.18ms Time], IncrementalHoareTripleChecker [114 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1016.31ms Time] [2021-08-29 19:15:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-29 19:15:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2021-08-29 19:15:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0483870967741935) internal successors, (130), 124 states have internal predecessors, (130), 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) [2021-08-29 19:15:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-08-29 19:15:50,171 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 116 [2021-08-29 19:15:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 19:15:50,171 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-08-29 19:15:50,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 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) [2021-08-29 19:15:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-08-29 19:15:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-29 19:15:50,173 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 19:15:50,173 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 19:15:50,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 19:15:50,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 19:15:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 19:15:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1176473243, now seen corresponding path program 1 times [2021-08-29 19:15:50,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 19:15:50,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424156148] [2021-08-29 19:15:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 19:15:50,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 19:15:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 19:15:50,323 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 19:15:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 19:15:50,562 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 19:15:50,563 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 19:15:50,564 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 19:15:50,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 19:15:50,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 19:15:50,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:15:50 BoogieIcfgContainer [2021-08-29 19:15:50,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 19:15:50,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 19:15:50,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 19:15:50,655 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 19:15:50,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:15:31" (3/4) ... [2021-08-29 19:15:50,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 19:15:50,721 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 19:15:50,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 19:15:50,722 INFO L158 Benchmark]: Toolchain (without parser) took 19769.20ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 39.1MB in the beginning and 87.3MB in the end (delta: -48.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,722 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 19:15:50,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.87ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 43.0MB in the end (delta: -4.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.88ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 40.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,723 INFO L158 Benchmark]: Boogie Preprocessor took 53.45ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 38.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,723 INFO L158 Benchmark]: RCFGBuilder took 374.87ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 41.6MB in the end (delta: -3.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,724 INFO L158 Benchmark]: TraceAbstraction took 18890.10ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 41.0MB in the beginning and 94.7MB in the end (delta: -53.7MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,724 INFO L158 Benchmark]: Witness Printer took 66.69ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 87.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 19:15:50,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.87ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 43.0MB in the end (delta: -4.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.88ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 40.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.45ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 38.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.87ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 41.6MB in the end (delta: -3.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * TraceAbstraction took 18890.10ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 41.0MB in the beginning and 94.7MB in the end (delta: -53.7MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. * Witness Printer took 66.69ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 87.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 113]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int cond0; [L25] int dummy = 0; [L26] int N; [L27] int var0; [L28] var0 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L31] int var1; [L32] var1 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L35] int var2; [L36] var2 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L39] int var3; [L40] var3 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L43] int var4; [L44] var4 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L47] int var5; [L48] var5 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L51] int var6; [L52] var6 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L55] int var7; [L56] var7 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L59] int var8; [L60] var8 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L63] int var9; [L64] var9 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L67] int var10; [L68] var10 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L71] int myvar0 = 1; [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L97] int var_for_abs; [L98] var_for_abs = var0 - var1 [L99] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L99] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L101] var_for_abs = var1 - var2 [L102] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L102] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L104] var_for_abs = var2 - var3 [L105] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L105] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L107] var_for_abs = var3 - var4 [L108] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L108] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L110] var_for_abs = var4 - var5 [L111] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L111] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L113] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18751.78ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 20.78ms, AutomataDifference: 12341.69ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 17.99ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2377 SdHoareTripleChecker+Valid, 2536.44ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2377 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2106.48ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1113 mSDsCounter, 243 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3611 IncrementalHoareTripleChecker+Invalid, 3854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 243 mSolverCounterUnsat, 0 mSDtfsCounter, 3611 mSolverCounterSat, 26.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 11936.96ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=2, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 43.10ms AutomataMinimizationTime, 3 MinimizatonAttempts, 57 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.91ms SsaConstructionTime, 798.90ms SatisfiabilityAnalysisTime, 5091.59ms InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 13788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-29 19:15:50,775 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...