./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.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/NonTerminationSimple7.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 e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 14:55:13,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 14:55:13,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 14:55:13,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 14:55:13,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 14:55:13,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 14:55:13,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 14:55:13,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 14:55:13,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 14:55:13,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 14:55:13,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 14:55:13,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 14:55:13,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 14:55:13,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 14:55:13,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 14:55:13,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 14:55:13,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 14:55:13,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 14:55:13,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 14:55:13,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 14:55:13,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 14:55:13,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 14:55:13,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 14:55:13,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 14:55:13,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 14:55:13,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 14:55:13,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 14:55:13,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 14:55:13,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 14:55:13,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 14:55:13,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 14:55:13,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 14:55:13,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 14:55:13,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 14:55:13,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 14:55:13,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 14:55:13,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 14:55:13,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 14:55:13,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 14:55:13,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 14:55:13,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 14:55:13,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 14:55:13,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 14:55:13,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 14:55:13,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 14:55:13,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 14:55:13,151 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 14:55:13,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 14:55:13,151 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 14:55:13,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 14:55:13,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 14:55:13,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 14:55:13,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 14:55:13,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 14:55:13,153 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 14:55:13,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 14:55:13,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 14:55:13,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 14:55:13,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 14:55:13,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 14:55:13,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 14:55:13,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 14:55:13,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 14:55:13,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 14:55:13,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 14:55:13,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 14:55:13,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 14:55:13,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 14:55:13,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 14:55:13,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 [2021-07-06 14:55:13,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 14:55:13,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 14:55:13,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 14:55:13,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 14:55:13,407 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 14:55:13,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2021-07-06 14:55:13,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf52b9b42/eeb983265d30403f91dd7de6e0c41687/FLAGc18fab3fc [2021-07-06 14:55:13,803 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 14:55:13,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2021-07-06 14:55:13,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf52b9b42/eeb983265d30403f91dd7de6e0c41687/FLAGc18fab3fc [2021-07-06 14:55:14,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf52b9b42/eeb983265d30403f91dd7de6e0c41687 [2021-07-06 14:55:14,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 14:55:14,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 14:55:14,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 14:55:14,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 14:55:14,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 14:55:14,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cbb10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14, skipping insertion in model container [2021-07-06 14:55:14,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 14:55:14,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 14:55:14,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 14:55:14,335 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 14:55:14,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 14:55:14,350 INFO L208 MainTranslator]: Completed translation [2021-07-06 14:55:14,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14 WrapperNode [2021-07-06 14:55:14,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 14:55:14,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 14:55:14,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 14:55:14,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 14:55:14,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 14:55:14,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 14:55:14,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 14:55:14,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 14:55:14,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 14:55:14,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 14:55:14,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 14:55:14,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 14:55:14,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (1/1) ... [2021-07-06 14:55:14,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 14:55:14,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 14:55:14,431 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 14:55:14,452 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 14:55:14,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 14:55:14,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 14:55:14,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 14:55:14,611 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 14:55:14,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:14 BoogieIcfgContainer [2021-07-06 14:55:14,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 14:55:14,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 14:55:14,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 14:55:14,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 14:55:14,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 02:55:14" (1/3) ... [2021-07-06 14:55:14,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f2abc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 02:55:14, skipping insertion in model container [2021-07-06 14:55:14,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:14" (2/3) ... [2021-07-06 14:55:14,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f2abc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 02:55:14, skipping insertion in model container [2021-07-06 14:55:14,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:14" (3/3) ... [2021-07-06 14:55:14,617 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTerminationSimple7.c [2021-07-06 14:55:14,622 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 14:55:14,622 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-06 14:55:14,656 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 14:55:14,664 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 14:55:14,664 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 14:55:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 14:55:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 14:55:14,681 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 14:55:14,682 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 14:55:14,682 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 14:55:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 14:55:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-07-06 14:55:14,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 14:55:14,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427915679] [2021-07-06 14:55:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 14:55:14,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 14:55:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 14:55:14,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:14,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 14:55:14,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:14,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 14:55:14,855 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 14:55:14,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 14:55:14,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427915679] [2021-07-06 14:55:14,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427915679] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 14:55:14,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 14:55:14,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 14:55:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901992988] [2021-07-06 14:55:14,860 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 14:55:14,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 14:55:14,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 14:55:14,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 14:55:14,874 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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 14:55:14,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 14:55:14,908 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-07-06 14:55:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 14:55:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 14:55:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 14:55:14,934 INFO L225 Difference]: With dead ends: 22 [2021-07-06 14:55:14,935 INFO L226 Difference]: Without dead ends: 8 [2021-07-06 14:55:14,936 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 14:55:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-07-06 14:55:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-07-06 14:55:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 14:55:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-07-06 14:55:14,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-07-06 14:55:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 14:55:14,958 INFO L442 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-07-06 14:55:14,958 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 14:55:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-07-06 14:55:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 14:55:14,958 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 14:55:14,958 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-07-06 14:55:14,958 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 14:55:14,958 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 14:55:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 14:55:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2021-07-06 14:55:14,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 14:55:14,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208791126] [2021-07-06 14:55:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 14:55:14,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 14:55:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 14:55:15,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 14:55:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 14:55:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 14:55:15,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 14:55:15,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208791126] [2021-07-06 14:55:15,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208791126] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-06 14:55:15,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522587809] [2021-07-06 14:55:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 14:55:15,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 14:55:15,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 14:55:15,028 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 14:55:15,028 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 14:55:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 14:55:15,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-06 14:55:15,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 14:55:15,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 14:55:15,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 14:55:15,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 14:55:15,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 14:55:15,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 14:55:15,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 14:55:15,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 14:55:15,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 14:55:15,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 14:55:15,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 14:55:15,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 14:55:15,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 14:55:15,182 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 14:55:15,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522587809] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 14:55:15,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-06 14:55:15,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-07-06 14:55:15,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996905617] [2021-07-06 14:55:15,185 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 14:55:15,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 14:55:15,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 14:55:15,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-07-06 14:55:15,189 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:55:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 14:55:15,198 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-07-06 14:55:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 14:55:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-07-06 14:55:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 14:55:15,199 INFO L225 Difference]: With dead ends: 8 [2021-07-06 14:55:15,199 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 14:55:15,199 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-07-06 14:55:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 14:55:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 14:55:15,200 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 14:55:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 14:55:15,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 14:55:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 14:55:15,200 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 14:55:15,201 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:55:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 14:55:15,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 14:55:15,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 14:55:15,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 14:55:15,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 14:55:15,225 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,225 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 14:55:15,225 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,225 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,225 INFO L762 garLoopResultBuilder]: For program point L15(lines 15 19) no Hoare annotation was computed. [2021-07-06 14:55:15,225 INFO L762 garLoopResultBuilder]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2021-07-06 14:55:15,226 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,226 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 14:55:15,226 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 14:55:15,226 INFO L758 garLoopResultBuilder]: At program point L20(lines 10 21) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) 2147483647) (not (= ULTIMATE.start_main_~c~0 0))) [2021-07-06 14:55:15,226 INFO L758 garLoopResultBuilder]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 (+ 2147483647 ULTIMATE.start_main_~c~0)) (<= ULTIMATE.start_main_~c~0 0)) [2021-07-06 14:55:15,246 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 14:55:15,440 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 14:55:15,441 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 14:55:15,444 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/2) [2021-07-06 14:55:15,447 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 14:55:15,448 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 14:55:15,450 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 14:55:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 14:55:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 14:55:15,451 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 14:55:15,451 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 14:55:15,452 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 14:55:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 14:55:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-07-06 14:55:15,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 14:55:15,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457330864] [2021-07-06 14:55:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 14:55:15,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 14:55:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 14:55:15,475 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-07-06 14:55:15,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 14:55:15,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 14:55:15,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 14:55:15,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 14:55:15,491 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 14:55:15,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 14:55:15,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457330864] [2021-07-06 14:55:15,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457330864] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 14:55:15,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 14:55:15,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 14:55:15,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825312721] [2021-07-06 14:55:15,492 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 14:55:15,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 14:55:15,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 14:55:15,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 14:55:15,503 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 14:55:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 14:55:15,524 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-07-06 14:55:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 14:55:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 14:55:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 14:55:15,525 INFO L225 Difference]: With dead ends: 24 [2021-07-06 14:55:15,525 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 14:55:15,526 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-06 14:55:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 14:55:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 14:55:15,526 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 14:55:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 14:55:15,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 14:55:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 14:55:15,526 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 14:55:15,526 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 14:55:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 14:55:15,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 14:55:15,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 14:55:15,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 14:55:15,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point L15(lines 15 19) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 14:55:15,534 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 14:55:15,535 INFO L758 garLoopResultBuilder]: At program point L20(lines 10 21) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) 2147483647) (not (= ULTIMATE.start_main_~c~0 0))) [2021-07-06 14:55:15,535 INFO L758 garLoopResultBuilder]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 (+ 2147483647 ULTIMATE.start_main_~c~0)) (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~c~0 0)) [2021-07-06 14:55:15,535 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-06 14:55:15,535 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 14:55:15,535 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/2) [2021-07-06 14:55:15,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 02:55:15 BoogieIcfgContainer [2021-07-06 14:55:15,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 14:55:15,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 14:55:15,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 14:55:15,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 14:55:15,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:14" (3/4) ... [2021-07-06 14:55:15,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 14:55:15,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-07-06 14:55:15,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-06 14:55:15,578 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 14:55:15,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 14:55:15,578 INFO L168 Benchmark]: Toolchain (without parser) took 1338.28 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 44.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:15,579 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 52.4 MB. Free memory is still 33.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 14:55:15,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 109.32 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.9 MB in the beginning and 42.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:15,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.50 ms. Allocated memory is still 62.9 MB. Free memory was 42.2 MB in the beginning and 47.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:15,579 INFO L168 Benchmark]: Boogie Preprocessor took 11.54 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 46.2 MB in the end (delta: 907.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 14:55:15,580 INFO L168 Benchmark]: RCFGBuilder took 211.93 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 37.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:15,580 INFO L168 Benchmark]: TraceAbstraction took 933.39 ms. Allocated memory is still 62.9 MB. Free memory was 36.8 MB in the beginning and 27.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:15,580 INFO L168 Benchmark]: Witness Printer took 31.09 ms. Allocated memory is still 62.9 MB. Free memory was 27.9 MB in the beginning and 44.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:15,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 52.4 MB. Free memory is still 33.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 109.32 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.9 MB in the beginning and 42.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.50 ms. Allocated memory is still 62.9 MB. Free memory was 42.2 MB in the beginning and 47.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.54 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 46.2 MB in the end (delta: 907.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 211.93 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 37.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 933.39 ms. Allocated memory is still 62.9 MB. Free memory was 36.8 MB in the beginning and 27.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Witness Printer took 31.09 ms. Allocated memory is still 62.9 MB. Free memory was 27.9 MB in the beginning and 44.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 4.0 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 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 789.2ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 9.3ms, AutomataDifference: 89.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 20.9ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 23 SDslu, 3 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 19 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 7.1ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 9.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.4ms SsaConstructionTime, 29.8ms SatisfiabilityAnalysisTime, 276.4ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 88.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 32.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.1ms, InitialAbstractionConstructionTime: 0.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 12 SDslu, 9 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 4.9ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3ms SsaConstructionTime, 10.1ms SatisfiabilityAnalysisTime, 25.7ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 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 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (x <= 2147483647 + c && 0 <= c) && c <= 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: c + x <= 2147483647 || !(c == 0) RESULT: Ultimate proved your program to be correct! [2021-07-06 14:55:15,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...