./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8d31f386 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/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df3ddc93bc6339292c9158119f1fdb949bb8842d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:09:06,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:09:06,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:09:06,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:09:06,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:09:06,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:09:06,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:09:06,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:09:06,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:09:06,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:09:06,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:09:06,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:09:06,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:09:06,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:09:06,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:09:06,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:09:06,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:09:06,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:09:06,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:09:06,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:09:06,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:09:06,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:09:06,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:09:06,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:09:06,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:09:06,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:09:06,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:09:06,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:09:06,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:09:06,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:09:06,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:09:06,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:09:06,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:09:06,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:09:06,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:09:06,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:09:06,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:09:06,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:09:06,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:09:06,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:09:06,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:09:06,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:09:06,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:09:06,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:09:06,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:09:06,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:09:06,928 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:09:06,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:09:06,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:09:06,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:09:06,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:09:06,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:09:06,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:09:06,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:09:06,929 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:09:06,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:09:06,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:09:06,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:09:06,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:09:06,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:09:06,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:09:06,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:09:06,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:09:06,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:09:06,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:09:06,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:09:06,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:09:06,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:09:06,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:09:06,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2021-07-06 15:09:07,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:09:07,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:09:07,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:09:07,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:09:07,213 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:09:07,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2021-07-06 15:09:07,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2df48f3/ac13f2fd16dd4fb4a460b4d561ac0f58/FLAG204aa3731 [2021-07-06 15:09:07,589 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:09:07,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2021-07-06 15:09:07,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2df48f3/ac13f2fd16dd4fb4a460b4d561ac0f58/FLAG204aa3731 [2021-07-06 15:09:08,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2df48f3/ac13f2fd16dd4fb4a460b4d561ac0f58 [2021-07-06 15:09:08,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:09:08,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:09:08,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:09:08,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:09:08,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:09:08,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d57a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08, skipping insertion in model container [2021-07-06 15:09:08,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:09:08,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:09:08,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:09:08,119 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:09:08,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:09:08,134 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:09:08,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08 WrapperNode [2021-07-06 15:09:08,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:09:08,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:09:08,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:09:08,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:09:08,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:09:08,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:09:08,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:09:08,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:09:08,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:09:08,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:09:08,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:09:08,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:09:08,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (1/1) ... [2021-07-06 15:09:08,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:09:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:09:08,220 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) [2021-07-06 15:09:08,242 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 [2021-07-06 15:09:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:09:08,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:09:08,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:09:08,386 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 15:09:08,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:09:08 BoogieIcfgContainer [2021-07-06 15:09:08,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:09:08,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:09:08,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:09:08,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:09:08,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:09:08" (1/3) ... [2021-07-06 15:09:08,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a12ea6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:09:08, skipping insertion in model container [2021-07-06 15:09:08,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:09:08" (2/3) ... [2021-07-06 15:09:08,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a12ea6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:09:08, skipping insertion in model container [2021-07-06 15:09:08,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:09:08" (3/3) ... [2021-07-06 15:09:08,393 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2021-07-06 15:09:08,398 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:09:08,399 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-07-06 15:09:08,436 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:09:08,443 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:09:08,443 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:09:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) 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) [2021-07-06 15:09:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:09:08,461 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:09:08,462 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:09:08,462 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:09:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:09:08,467 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-07-06 15:09:08,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:09:08,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159383074] [2021-07-06 15:09:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:09:08,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:09:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:09:08,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:09:08,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:09:08,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159383074] [2021-07-06 15:09:08,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159383074] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:09:08,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:09:08,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-07-06 15:09:08,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83257001] [2021-07-06 15:09:08,593 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:09:08,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:09:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:09:08,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:08,604 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-07-06 15:09:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:09:08,710 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2021-07-06 15:09:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:09:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-07-06 15:09:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:09:08,724 INFO L225 Difference]: With dead ends: 24 [2021-07-06 15:09:08,732 INFO L226 Difference]: Without dead ends: 12 [2021-07-06 15:09:08,735 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-07-06 15:09:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-07-06 15:09:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2021-07-06 15:09:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-07-06 15:09:08,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2021-07-06 15:09:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:09:08,758 INFO L442 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-07-06 15:09:08,759 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-07-06 15:09:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-07-06 15:09:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-06 15:09:08,760 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:09:08,760 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-07-06 15:09:08,760 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:09:08,760 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:09:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:09:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2021-07-06 15:09:08,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:09:08,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126679123] [2021-07-06 15:09:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:09:08,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:09:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:09:08,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,800 INFO L142 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size [2021-07-06 15:09:08,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 15:09:08,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:09:08,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:09:08,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:09:08,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126679123] [2021-07-06 15:09:08,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126679123] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-06 15:09:08,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568850549] [2021-07-06 15:09:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:09:08,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 15:09:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:09:08,833 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) [2021-07-06 15:09:08,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-06 15:09:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:09:08,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-06 15:09:08,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 15:09:08,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:08,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 15:09:08,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 15:09:08,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 15:09:08,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 15:09:08,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:09:08,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 15:09:08,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 15:09:08,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 15:09:08,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 15:09:08,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 15:09:08,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:08,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:09:08,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568850549] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:09:08,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-06 15:09:08,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-07-06 15:09:08,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889210299] [2021-07-06 15:09:08,930 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 15:09:08,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:09:08,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 15:09:08,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-06 15:09:08,931 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:09:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:09:08,953 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-07-06 15:09:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 15:09:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-06 15:09:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:09:08,954 INFO L225 Difference]: With dead ends: 20 [2021-07-06 15:09:08,954 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:09:08,955 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-06 15:09:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:09:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:09:08,955 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) [2021-07-06 15:09:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:09:08,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-07-06 15:09:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:09:08,956 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:09:08,956 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:09:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:09:08,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:09:08,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:09:08,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:08,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:08,973 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:08,973 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:09:08,973 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:08,974 INFO L758 garLoopResultBuilder]: At program point L23(lines 13 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:09:08,974 INFO L762 garLoopResultBuilder]: For program point L17(lines 17 21) no Hoare annotation was computed. [2021-07-06 15:09:08,974 INFO L758 garLoopResultBuilder]: At program point L17-2(lines 16 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:09:08,974 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:08,974 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:08,974 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:09:08,975 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:09:08,975 INFO L762 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-07-06 15:09:08,975 INFO L762 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-07-06 15:09:08,975 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:09:08,975 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:09:08,975 INFO L762 garLoopResultBuilder]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2021-07-06 15:09:08,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-06 15:09:09,185 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 15:09:09,185 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:09:09,188 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/4) [2021-07-06 15:09:09,190 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:09:09,192 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:09:09,194 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:09:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) 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) [2021-07-06 15:09:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 15:09:09,196 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:09:09,196 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 15:09:09,196 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:09:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:09:09,197 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-07-06 15:09:09,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:09:09,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463127878] [2021-07-06 15:09:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:09:09,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:09:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:09:09,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:09,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:09,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:09,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:09:09,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:09:09,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463127878] [2021-07-06 15:09:09,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463127878] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:09:09,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:09:09,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:09:09,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669516845] [2021-07-06 15:09:09,234 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:09:09,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:09:09,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:09:09,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:09,234 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-07-06 15:09:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:09:09,265 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-07-06 15:09:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:09:09,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-07-06 15:09:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:09:09,266 INFO L225 Difference]: With dead ends: 19 [2021-07-06 15:09:09,266 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:09:09,267 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:09:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:09:09,267 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) [2021-07-06 15:09:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:09:09,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 15:09:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:09:09,268 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:09:09,268 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-07-06 15:09:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:09:09,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:09:09,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:09:09,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:09,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:09,271 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,271 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,271 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,271 INFO L758 garLoopResultBuilder]: At program point L23(lines 13 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:09:09,271 INFO L762 garLoopResultBuilder]: For program point L17(lines 17 21) no Hoare annotation was computed. [2021-07-06 15:09:09,272 INFO L758 garLoopResultBuilder]: At program point L17-2(lines 16 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:09:09,272 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,272 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,272 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,272 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,272 INFO L762 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,272 INFO L762 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,273 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,273 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,273 INFO L762 garLoopResultBuilder]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2021-07-06 15:09:09,273 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-06 15:09:09,273 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:09:09,273 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/4) [2021-07-06 15:09:09,274 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:09:09,275 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:09:09,275 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:09:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) 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) [2021-07-06 15:09:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:09:09,276 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:09:09,276 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:09:09,276 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:09:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:09:09,277 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-07-06 15:09:09,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:09:09,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823165965] [2021-07-06 15:09:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:09:09,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:09:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:09:09,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:09,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:09:09,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:09,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:09:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:09:09,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:09:09,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823165965] [2021-07-06 15:09:09,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823165965] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:09:09,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:09:09,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:09:09,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197353856] [2021-07-06 15:09:09,295 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:09:09,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:09:09,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:09:09,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:09,296 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-06 15:09:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:09:09,307 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-07-06 15:09:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:09:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-07-06 15:09:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:09:09,308 INFO L225 Difference]: With dead ends: 19 [2021-07-06 15:09:09,308 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:09:09,308 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:09,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:09:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:09:09,310 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) [2021-07-06 15:09:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:09:09,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-07-06 15:09:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:09:09,310 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:09:09,310 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-06 15:09:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:09:09,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:09:09,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:09:09,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:09,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:09,317 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,317 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,317 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,317 INFO L758 garLoopResultBuilder]: At program point L23(lines 13 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-07-06 15:09:09,317 INFO L762 garLoopResultBuilder]: For program point L17(lines 17 21) no Hoare annotation was computed. [2021-07-06 15:09:09,318 INFO L758 garLoopResultBuilder]: At program point L17-2(lines 16 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:09:09,318 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,318 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,318 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,318 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,318 INFO L762 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,319 INFO L762 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,319 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,319 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,319 INFO L762 garLoopResultBuilder]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2021-07-06 15:09:09,319 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-06 15:09:09,319 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:09:09,320 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (3/4) [2021-07-06 15:09:09,321 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:09:09,322 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:09:09,322 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:09:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) 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) [2021-07-06 15:09:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 15:09:09,325 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:09:09,325 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 15:09:09,325 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:09:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:09:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-07-06 15:09:09,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:09:09,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441307999] [2021-07-06 15:09:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:09:09,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:09:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:09:09,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:09:09,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:09:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:09:09,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:09:09,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441307999] [2021-07-06 15:09:09,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441307999] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:09:09,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:09:09,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-07-06 15:09:09,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039677021] [2021-07-06 15:09:09,350 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:09:09,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:09:09,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:09:09,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:09,351 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-07-06 15:09:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:09:09,367 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-07-06 15:09:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:09:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-07-06 15:09:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:09:09,370 INFO L225 Difference]: With dead ends: 19 [2021-07-06 15:09:09,370 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:09:09,371 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:09:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:09:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:09:09,371 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) [2021-07-06 15:09:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:09:09,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 15:09:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:09:09,381 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:09:09,381 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-07-06 15:09:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:09:09,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:09:09,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:09:09,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:09,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:09:09,388 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,388 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,388 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,388 INFO L758 garLoopResultBuilder]: At program point L23(lines 13 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 0) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-07-06 15:09:09,388 INFO L762 garLoopResultBuilder]: For program point L17(lines 17 21) no Hoare annotation was computed. [2021-07-06 15:09:09,389 INFO L758 garLoopResultBuilder]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-07-06 15:09:09,389 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,389 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,389 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,389 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:09:09,389 INFO L762 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,389 INFO L762 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-07-06 15:09:09,390 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,390 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:09:09,390 INFO L762 garLoopResultBuilder]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2021-07-06 15:09:09,390 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-06 15:09:09,390 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:09:09,390 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (4/4) [2021-07-06 15:09:09,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:09:09 BoogieIcfgContainer [2021-07-06 15:09:09,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:09:09,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:09:09,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:09:09,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:09:09,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:09:08" (3/4) ... [2021-07-06 15:09:09,402 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 15:09:09,407 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-07-06 15:09:09,407 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-06 15:09:09,425 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:09:09,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:09:09,428 INFO L168 Benchmark]: Toolchain (without parser) took 1405.02 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 54.4 MB in the beginning and 46.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-07-06 15:09:09,428 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 71.3 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:09:09,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 110.84 ms. Allocated memory is still 71.3 MB. Free memory was 54.2 MB in the beginning and 45.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:09:09,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.39 ms. Allocated memory is still 71.3 MB. Free memory was 45.9 MB in the beginning and 55.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:09:09,429 INFO L168 Benchmark]: Boogie Preprocessor took 12.68 ms. Allocated memory is still 71.3 MB. Free memory was 55.9 MB in the beginning and 55.2 MB in the end (delta: 650.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:09:09,429 INFO L168 Benchmark]: RCFGBuilder took 185.76 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 46.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:09:09,430 INFO L168 Benchmark]: TraceAbstraction took 1011.02 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 45.4 MB in the beginning and 48.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-07-06 15:09:09,431 INFO L168 Benchmark]: Witness Printer took 27.60 ms. Allocated memory is still 86.0 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:09:09,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 71.3 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 110.84 ms. Allocated memory is still 71.3 MB. Free memory was 54.2 MB in the beginning and 45.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.39 ms. Allocated memory is still 71.3 MB. Free memory was 45.9 MB in the beginning and 55.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.68 ms. Allocated memory is still 71.3 MB. Free memory was 55.9 MB in the beginning and 55.2 MB in the end (delta: 650.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 185.76 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 46.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1011.02 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 45.4 MB in the beginning and 48.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Witness Printer took 27.60 ms. Allocated memory is still 86.0 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 753.9ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 10.2ms, AutomataDifference: 165.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 13.9ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 13 SDslu, 0 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 6.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 23.2ms SatisfiabilityAnalysisTime, 173.8ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 83.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.9ms, AutomataDifference: 32.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2.5ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 1.1ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2ms SsaConstructionTime, 2.1ms SatisfiabilityAnalysisTime, 28.5ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 45.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 13.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5.0ms, InitialAbstractionConstructionTime: 0.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2ms SsaConstructionTime, 1.2ms SatisfiabilityAnalysisTime, 13.1ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 69.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.2ms, AutomataDifference: 20.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.2ms, InitialAbstractionConstructionTime: 1.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 1.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 3.7ms SatisfiabilityAnalysisTime, 14.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 <= x + 2147483648 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (x <= 0 && x <= 2147483647) && 0 <= x + 2147483648 RESULT: Ultimate proved your program to be correct! [2021-07-06 15:09:09,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...