./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/modulus-2.i --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/bitvector/modulus-2.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 c8679dad194af8e09f8dc0270d50ea9ce875abb3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:01:03,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:01:03,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:01:03,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:01:03,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:01:03,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:01:03,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:01:03,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:01:03,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:01:03,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:01:03,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:01:03,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:01:03,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:01:03,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:01:03,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:01:03,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:01:03,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:01:03,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:01:03,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:01:03,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:01:03,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:01:03,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:01:03,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:01:03,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:01:03,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:01:03,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:01:03,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:01:03,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:01:03,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:01:03,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:01:03,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:01:03,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:01:03,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:01:03,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:01:03,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:01:03,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:01:03,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:01:03,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:01:03,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:01:03,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:01:03,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:01:03,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 03:01:03,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:01:03,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:01:03,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:01:03,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:01:03,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:01:03,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:01:03,980 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:01:03,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:01:03,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:01:03,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 03:01:03,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:01:03,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:01:03,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:01:03,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:01:03,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:01:03,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:01:03,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:01:03,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:01:03,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:01:03,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 03:01:03,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 03:01:03,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:01:03,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:01:03,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-08-29 03:01:04,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:01:04,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:01:04,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:01:04,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:01:04,343 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:01:04,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/modulus-2.i [2021-08-29 03:01:04,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8261f42f3/677c6ecec80648e98e106e32ff2ac22a/FLAG8e36e45f0 [2021-08-29 03:01:04,774 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:01:04,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/modulus-2.i [2021-08-29 03:01:04,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8261f42f3/677c6ecec80648e98e106e32ff2ac22a/FLAG8e36e45f0 [2021-08-29 03:01:05,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8261f42f3/677c6ecec80648e98e106e32ff2ac22a [2021-08-29 03:01:05,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:01:05,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:01:05,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:01:05,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:01:05,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:01:05,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a27701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05, skipping insertion in model container [2021-08-29 03:01:05,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:01:05,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:01:05,333 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/bitvector/modulus-2.i[947,960] [2021-08-29 03:01:05,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:01:05,368 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:01:05,390 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/bitvector/modulus-2.i[947,960] [2021-08-29 03:01:05,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:01:05,424 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:01:05,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05 WrapperNode [2021-08-29 03:01:05,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:01:05,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:01:05,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:01:05,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:01:05,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:01:05,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:01:05,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:01:05,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:01:05,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:01:05,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:01:05,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:01:05,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:01:05,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (1/1) ... [2021-08-29 03:01:05,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:01:05,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:01:05,512 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 03:01:05,515 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 03:01:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 03:01:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:01:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:01:05,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:01:05,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:01:05,677 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-29 03:01:05,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:01:05 BoogieIcfgContainer [2021-08-29 03:01:05,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:01:05,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:01:05,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:01:05,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:01:05,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:01:05" (1/3) ... [2021-08-29 03:01:05,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a8c45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:01:05, skipping insertion in model container [2021-08-29 03:01:05,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:01:05" (2/3) ... [2021-08-29 03:01:05,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a8c45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:01:05, skipping insertion in model container [2021-08-29 03:01:05,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:01:05" (3/3) ... [2021-08-29 03:01:05,689 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-08-29 03:01:05,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:01:05,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:01:05,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:01:05,751 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 03:01:05,751 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:01:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 03:01:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 03:01:05,772 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:01:05,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:01:05,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:01:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:01:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1232845228, now seen corresponding path program 1 times [2021-08-29 03:01:05,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:01:05,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146590778] [2021-08-29 03:01:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:05,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:01:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:01:05,951 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 03:01:05,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:01:05,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146590778] [2021-08-29 03:01:05,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146590778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:01:05,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:01:05,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 03:01:05,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647239921] [2021-08-29 03:01:05,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 03:01:05,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:01:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 03:01:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 03:01:05,985 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 03:01:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:01:06,074 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-08-29 03:01:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 03:01:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-29 03:01:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:01:06,082 INFO L225 Difference]: With dead ends: 31 [2021-08-29 03:01:06,082 INFO L226 Difference]: Without dead ends: 13 [2021-08-29 03:01:06,084 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 03:01:06,087 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.93ms IncrementalHoareTripleChecker+Time [2021-08-29 03:01:06,088 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.25ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 75.93ms Time] [2021-08-29 03:01:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-29 03:01:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-29 03:01:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2021-08-29 03:01:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-08-29 03:01:06,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-08-29 03:01:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:01:06,110 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-08-29 03:01:06,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 03:01:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-08-29 03:01:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 03:01:06,111 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:01:06,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:01:06,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 03:01:06,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:01:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:01:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash -2042191854, now seen corresponding path program 1 times [2021-08-29 03:01:06,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:01:06,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428638045] [2021-08-29 03:01:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:06,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:01:06,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 03:01:06,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929670584] [2021-08-29 03:01:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:06,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:06,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:01:06,127 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) [2021-08-29 03:01:06,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 03:01:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:01:06,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 03:01:06,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:01:06,738 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 03:01:06,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:01:06,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:01:06,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428638045] [2021-08-29 03:01:06,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 03:01:06,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929670584] [2021-08-29 03:01:06,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929670584] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:01:06,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:01:06,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 03:01:06,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183551220] [2021-08-29 03:01:06,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 03:01:06,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:01:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 03:01:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 03:01:06,741 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 03:01:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:01:06,839 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-08-29 03:01:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 03:01:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-08-29 03:01:06,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:01:06,841 INFO L225 Difference]: With dead ends: 23 [2021-08-29 03:01:06,841 INFO L226 Difference]: Without dead ends: 19 [2021-08-29 03:01:06,842 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.00ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:01:06,843 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.16ms IncrementalHoareTripleChecker+Time [2021-08-29 03:01:06,844 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 73.16ms Time] [2021-08-29 03:01:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-29 03:01:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-08-29 03:01:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 03:01:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-08-29 03:01:06,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-08-29 03:01:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:01:06,853 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-08-29 03:01:06,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 03:01:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-08-29 03:01:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 03:01:06,857 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:01:06,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:01:06,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 03:01:07,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:07,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:01:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:01:07,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2042132272, now seen corresponding path program 1 times [2021-08-29 03:01:07,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:01:07,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140613923] [2021-08-29 03:01:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:07,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:01:07,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 03:01:07,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942763319] [2021-08-29 03:01:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:07,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:01:07,085 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) [2021-08-29 03:01:07,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 03:01:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:01:07,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 03:01:07,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:01:07,526 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 03:01:07,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:01:07,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:01:07,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140613923] [2021-08-29 03:01:07,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 03:01:07,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942763319] [2021-08-29 03:01:07,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942763319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:01:07,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:01:07,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 03:01:07,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992580281] [2021-08-29 03:01:07,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 03:01:07,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:01:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 03:01:07,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 03:01:07,534 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 03:01:07,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:01:07,589 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-29 03:01:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 03:01:07,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-08-29 03:01:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:01:07,590 INFO L225 Difference]: With dead ends: 19 [2021-08-29 03:01:07,591 INFO L226 Difference]: Without dead ends: 14 [2021-08-29 03:01:07,591 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.43ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:01:07,594 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.37ms IncrementalHoareTripleChecker+Time [2021-08-29 03:01:07,596 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 34.37ms Time] [2021-08-29 03:01:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-29 03:01:07,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-08-29 03:01:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-08-29 03:01:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-29 03:01:07,602 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-08-29 03:01:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:01:07,603 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-29 03:01:07,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 03:01:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-08-29 03:01:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 03:01:07,604 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:01:07,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:01:07,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 03:01:07,828 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,SelfDestructingSolverStorable2 [2021-08-29 03:01:07,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:01:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:01:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash 387361989, now seen corresponding path program 1 times [2021-08-29 03:01:07,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:01:07,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686997690] [2021-08-29 03:01:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:07,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:01:07,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 03:01:07,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585580520] [2021-08-29 03:01:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:07,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:01:07,841 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) [2021-08-29 03:01:07,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 03:01:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:01:07,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 03:01:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:01:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:01:07,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:01:07,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:01:07,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686997690] [2021-08-29 03:01:07,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 03:01:07,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585580520] [2021-08-29 03:01:07,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585580520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:01:07,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:01:07,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:01:07,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487759458] [2021-08-29 03:01:07,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:01:07,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:01:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:01:07,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:01:07,929 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:01:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:01:07,962 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-08-29 03:01:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:01:07,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 03:01:07,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:01:07,963 INFO L225 Difference]: With dead ends: 23 [2021-08-29 03:01:07,963 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 03:01:07,963 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:01:07,964 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.30ms IncrementalHoareTripleChecker+Time [2021-08-29 03:01:07,964 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 24.30ms Time] [2021-08-29 03:01:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 03:01:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 03:01:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-08-29 03:01:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-08-29 03:01:07,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2021-08-29 03:01:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:01:07,967 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-08-29 03:01:07,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:01:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-08-29 03:01:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 03:01:07,968 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:01:07,968 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:01:08,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 03:01:08,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:08,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:01:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:01:08,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1988806915, now seen corresponding path program 1 times [2021-08-29 03:01:08,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:01:08,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015055899] [2021-08-29 03:01:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:08,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:01:08,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 03:01:08,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44601539] [2021-08-29 03:01:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:08,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:08,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:01:08,231 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) [2021-08-29 03:01:08,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 03:01:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:01:08,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 03:01:08,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:01:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 03:01:08,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:01:08,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:01:08,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015055899] [2021-08-29 03:01:08,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 03:01:08,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44601539] [2021-08-29 03:01:08,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44601539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:01:08,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:01:08,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 03:01:08,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732613392] [2021-08-29 03:01:08,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 03:01:08,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:01:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 03:01:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:01:08,570 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-08-29 03:01:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:01:08,640 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-29 03:01:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 03:01:08,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2021-08-29 03:01:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:01:08,641 INFO L225 Difference]: With dead ends: 19 [2021-08-29 03:01:08,641 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 03:01:08,642 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.68ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-29 03:01:08,642 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.21ms IncrementalHoareTripleChecker+Time [2021-08-29 03:01:08,642 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 51.21ms Time] [2021-08-29 03:01:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 03:01:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 03:01:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2021-08-29 03:01:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-08-29 03:01:08,645 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 14 [2021-08-29 03:01:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:01:08,645 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-08-29 03:01:08,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-08-29 03:01:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-08-29 03:01:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 03:01:08,646 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:01:08,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:01:08,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 03:01:08,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:08,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:01:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:01:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1988866497, now seen corresponding path program 1 times [2021-08-29 03:01:08,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:01:08,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431524167] [2021-08-29 03:01:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:08,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:01:08,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 03:01:08,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048492518] [2021-08-29 03:01:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:01:08,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:01:08,876 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) [2021-08-29 03:01:08,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 03:01:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:01:08,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 03:01:08,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:01:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 03:01:09,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:01:09,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:01:09,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431524167] [2021-08-29 03:01:09,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 03:01:09,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048492518] [2021-08-29 03:01:09,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048492518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:01:09,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:01:09,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 03:01:09,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289726424] [2021-08-29 03:01:09,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 03:01:09,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:01:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 03:01:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:01:09,246 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-08-29 03:01:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:01:09,297 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-08-29 03:01:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 03:01:09,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2021-08-29 03:01:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:01:09,297 INFO L225 Difference]: With dead ends: 15 [2021-08-29 03:01:09,297 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 03:01:09,298 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 51.75ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-29 03:01:09,298 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.75ms IncrementalHoareTripleChecker+Time [2021-08-29 03:01:09,299 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 36.75ms Time] [2021-08-29 03:01:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 03:01:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 03:01:09,299 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) [2021-08-29 03:01:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 03:01:09,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-08-29 03:01:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:01:09,300 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 03:01:09,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-08-29 03:01:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 03:01:09,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 03:01:09,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:01:09,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 03:01:09,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:01:09,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 03:01:09,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:01:09,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:01:09,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:01:09,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:01:09,557 INFO L854 garLoopResultBuilder]: At program point L48-2(lines 48 51) the Hoare annotation is: (< 0 (mod ULTIMATE.start_main_~d~0 4294967296)) [2021-08-29 03:01:09,557 INFO L858 garLoopResultBuilder]: For program point L48-3(lines 48 51) no Hoare annotation was computed. [2021-08-29 03:01:09,557 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-08-29 03:01:09,557 INFO L861 garLoopResultBuilder]: At program point L44-1(lines 44 58) the Hoare annotation is: true [2021-08-29 03:01:09,557 INFO L858 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-08-29 03:01:09,557 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 03:01:09,557 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point L54-1(lines 54 56) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L854 garLoopResultBuilder]: At program point L46-2(lines 46 53) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~m~0) (< 0 (mod ULTIMATE.start_main_~d~0 4294967296))) [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point L46-3(lines 44 58) no Hoare annotation was computed. [2021-08-29 03:01:09,558 INFO L861 garLoopResultBuilder]: At program point L59(lines 36 60) the Hoare annotation is: true [2021-08-29 03:01:09,558 INFO L858 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-08-29 03:01:09,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:01:09,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:01:09 BoogieIcfgContainer [2021-08-29 03:01:09,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:01:09,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:01:09,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:01:09,572 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:01:09,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:01:05" (3/4) ... [2021-08-29 03:01:09,574 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 03:01:09,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-29 03:01:09,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 03:01:09,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 03:01:09,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 03:01:09,605 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 03:01:09,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:01:09,606 INFO L158 Benchmark]: Toolchain (without parser) took 4403.93ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 24.9MB in the end (delta: 8.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-08-29 03:01:09,606 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:01:09,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.97ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 50.4MB in the end (delta: -17.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-08-29 03:01:09,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.16ms. Allocated memory is still 67.1MB. Free memory was 50.4MB in the beginning and 48.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:01:09,607 INFO L158 Benchmark]: Boogie Preprocessor took 17.82ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 47.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:01:09,607 INFO L158 Benchmark]: RCFGBuilder took 202.56ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 39.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 03:01:09,607 INFO L158 Benchmark]: TraceAbstraction took 3891.14ms. Allocated memory is still 67.1MB. Free memory was 38.8MB in the beginning and 27.1MB in the end (delta: 11.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-08-29 03:01:09,607 INFO L158 Benchmark]: Witness Printer took 33.58ms. Allocated memory is still 67.1MB. Free memory was 27.1MB in the beginning and 24.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 03:01:09,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.97ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 50.4MB in the end (delta: -17.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.16ms. Allocated memory is still 67.1MB. Free memory was 50.4MB in the beginning and 48.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.82ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 47.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 202.56ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 39.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3891.14ms. Allocated memory is still 67.1MB. Free memory was 38.8MB in the beginning and 27.1MB in the end (delta: 11.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 33.58ms. Allocated memory is still 67.1MB. Free memory was 27.1MB in the beginning and 24.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: 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: 3819.43ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 16.23ms, AutomataDifference: 470.33ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 43.50ms, InitialAbstractionConstructionTime: 8.88ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 295.73ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 207.18ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 271 IncrementalHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 271 mSolverCounterSat, 4.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 198.17ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 26.82ms AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 16 HoareAnnotationTreeSize, 4 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 18.97ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 19.59ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.42ms SsaConstructionTime, 124.50ms SatisfiabilityAnalysisTime, 1662.60ms InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 18 NumberOfNonLiveVariables, 264 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 5/5 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: 48]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: n == m && 0 < d % 4294967296 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 03:01:09,625 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...