./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3bdeae46dbc756a421cd87ce74cf66692dd63be4319bd9b008f470e9866099a9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:19,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:20,052 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:57:20,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:20,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:20,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:20,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:20,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:20,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:20,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:20,110 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:20,111 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:20,112 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:20,113 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:57:20,114 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:20,114 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:20,115 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:57:20,115 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:57:20,115 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:20,116 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:57:20,116 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:57:20,117 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:57:20,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:20,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:57:20,119 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:20,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:57:20,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:20,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:20,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:57:20,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:20,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:57:20,122 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:57:20,123 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:57:20,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:20,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:57:20,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:20,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:20,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:20,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:20,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:20,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:20,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:57:20,125 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:57:20,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:57:20,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:57:20,126 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:20,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:20,127 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bdeae46dbc756a421cd87ce74cf66692dd63be4319bd9b008f470e9866099a9 [2023-11-19 04:57:20,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:20,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:20,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:20,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:20,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:20,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2023-11-19 04:57:23,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:57:23,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:57:23,798 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2023-11-19 04:57:23,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/data/b5140fc81/8c17fe5407ad4f44878f5499ae2f5374/FLAG44556325e [2023-11-19 04:57:23,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/data/b5140fc81/8c17fe5407ad4f44878f5499ae2f5374 [2023-11-19 04:57:23,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:57:23,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:57:23,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:23,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:57:23,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:57:23,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:23" (1/1) ... [2023-11-19 04:57:23,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2472069f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:23, skipping insertion in model container [2023-11-19 04:57:23,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:23" (1/1) ... [2023-11-19 04:57:23,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:57:24,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:24,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:57:24,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:24,116 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:57:24,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24 WrapperNode [2023-11-19 04:57:24,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:24,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:24,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:57:24,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:57:24,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,149 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2023-11-19 04:57:24,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:24,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:57:24,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:57:24,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:57:24,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:57:24,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:57:24,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:57:24,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:57:24,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (1/1) ... [2023-11-19 04:57:24,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:24,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:57:24,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:57:24,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:57:24,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:57:24,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:57:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:57:24,332 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:57:24,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:57:24,472 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:57:24,514 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:57:24,515 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:57:24,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:24 BoogieIcfgContainer [2023-11-19 04:57:24,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:57:24,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:57:24,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:57:24,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:57:24,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:57:23" (1/3) ... [2023-11-19 04:57:24,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b755737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:24, skipping insertion in model container [2023-11-19 04:57:24,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:24" (2/3) ... [2023-11-19 04:57:24,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b755737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:24, skipping insertion in model container [2023-11-19 04:57:24,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:24" (3/3) ... [2023-11-19 04:57:24,530 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.i [2023-11-19 04:57:24,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:57:24,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 04:57:24,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:57:24,605 INFO L357 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e3424f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:57:24,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 04:57:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) [2023-11-19 04:57:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:57:24,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:24,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:57:24,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:57:24,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2023-11-19 04:57:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700878903] [2023-11-19 04:57:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:24,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:24,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700878903] [2023-11-19 04:57:24,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700878903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:24,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:57:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990884497] [2023-11-19 04:57:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:24,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:57:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:57:24,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:57:24,906 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) 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) [2023-11-19 04:57:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:24,936 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-19 04:57:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:57:24,939 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 [2023-11-19 04:57:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:24,947 INFO L225 Difference]: With dead ends: 13 [2023-11-19 04:57:24,947 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 04:57:24,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:57:24,953 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:24,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:57:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 04:57:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-19 04:57:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-11-19 04:57:24,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2023-11-19 04:57:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:24,986 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-11-19 04:57:24,986 INFO L496 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) [2023-11-19 04:57:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-11-19 04:57:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:57:24,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:24,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:57:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:57:24,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:57:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2023-11-19 04:57:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938858979] [2023-11-19 04:57:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:25,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938858979] [2023-11-19 04:57:25,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938858979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:25,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:25,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:57:25,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761794537] [2023-11-19 04:57:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:25,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:57:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:57:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:57:25,050 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-19 04:57:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:25,101 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2023-11-19 04:57:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:57:25,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2023-11-19 04:57:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:25,102 INFO L225 Difference]: With dead ends: 10 [2023-11-19 04:57:25,102 INFO L226 Difference]: Without dead ends: 9 [2023-11-19 04:57:25,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:57:25,104 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:25,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:57:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-19 04:57:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-19 04:57:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-11-19 04:57:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 04:57:25,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 04:57:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:25,107 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 04:57:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-19 04:57:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 04:57:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:57:25,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:25,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:57:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:57:25,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:57:25,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2023-11-19 04:57:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:25,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443927904] [2023-11-19 04:57:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:25,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443927904] [2023-11-19 04:57:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443927904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:25,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:25,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:57:25,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356510512] [2023-11-19 04:57:25,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:25,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:57:25,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:25,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:57:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:57:25,264 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-19 04:57:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:25,308 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-19 04:57:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:57:25,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2023-11-19 04:57:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:25,309 INFO L225 Difference]: With dead ends: 16 [2023-11-19 04:57:25,309 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 04:57:25,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:57:25,311 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:25,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:57:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 04:57:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-11-19 04:57:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 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) [2023-11-19 04:57:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 04:57:25,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2023-11-19 04:57:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:25,317 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 04:57:25,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-19 04:57:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 04:57:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:57:25,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:25,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:57:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:57:25,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:57:25,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2023-11-19 04:57:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:25,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475976038] [2023-11-19 04:57:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:25,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475976038] [2023-11-19 04:57:25,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475976038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:25,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:25,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:57:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522627947] [2023-11-19 04:57:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:25,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:57:25,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:57:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:57:25,384 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-19 04:57:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:25,420 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-19 04:57:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:57:25,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2023-11-19 04:57:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:25,422 INFO L225 Difference]: With dead ends: 13 [2023-11-19 04:57:25,422 INFO L226 Difference]: Without dead ends: 12 [2023-11-19 04:57:25,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:57:25,427 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:25,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:57:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-19 04:57:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 04:57:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2023-11-19 04:57:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 04:57:25,432 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2023-11-19 04:57:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:25,432 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 04:57:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-19 04:57:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 04:57:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:57:25,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:25,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 04:57:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:57:25,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:57:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1372123773, now seen corresponding path program 1 times [2023-11-19 04:57:25,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:25,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814697575] [2023-11-19 04:57:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:25,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:25,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814697575] [2023-11-19 04:57:25,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814697575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:57:25,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495579861] [2023-11-19 04:57:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:25,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:57:25,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:25,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:57:25,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:57:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:25,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:57:25,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:57:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:57:25,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:57:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:25,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495579861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:57:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1029741236] [2023-11-19 04:57:25,926 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:57:25,927 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:57:25,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:57:25,935 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:57:25,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:57:26,155 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:57:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1029741236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:26,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:57:26,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 7] total 18 [2023-11-19 04:57:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906163937] [2023-11-19 04:57:26,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:57:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:57:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:57:26,541 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:26,567 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-11-19 04:57:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:57:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:57:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:26,568 INFO L225 Difference]: With dead ends: 12 [2023-11-19 04:57:26,568 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:57:26,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:57:26,570 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:26,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:57:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:57:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:57:26,572 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) [2023-11-19 04:57:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:57:26,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-11-19 04:57:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:26,572 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:57:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:57:26,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:57:26,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 04:57:26,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 04:57:26,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-19 04:57:26,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-19 04:57:26,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:57:26,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:57:26,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:57:26,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2023-11-19 04:57:26,859 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:57:26,860 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 04:57:26,860 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-11-19 04:57:26,861 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-19 04:57:26,862 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 26 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0))) [2023-11-19 04:57:26,862 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:57:26,863 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 19 29) no Hoare annotation was computed. [2023-11-19 04:57:26,863 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2023-11-19 04:57:26,864 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 04:57:26,868 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2023-11-19 04:57:26,869 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2023-11-19 04:57:26,870 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-11-19 04:57:26,873 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 04:57:26,875 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:57:26,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 04:57:26,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 04:57:26,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 04:57:26,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 04:57:26,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 04:57:26,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 04:57:26,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 04:57:26,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:57:26 BoogieIcfgContainer [2023-11-19 04:57:26,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:57:26,899 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:57:26,899 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:57:26,899 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:57:26,900 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:24" (3/4) ... [2023-11-19 04:57:26,902 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:57:26,909 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-19 04:57:26,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-19 04:57:26,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:57:26,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:57:26,996 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:57:26,996 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:57:26,997 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:57:26,997 INFO L158 Benchmark]: Toolchain (without parser) took 3167.74ms. Allocated memory is still 167.8MB. Free memory was 135.5MB in the beginning and 78.3MB in the end (delta: 57.2MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2023-11-19 04:57:26,998 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 72.6MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:26,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.95ms. Allocated memory is still 167.8MB. Free memory was 135.2MB in the beginning and 125.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:57:26,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.19ms. Allocated memory is still 167.8MB. Free memory was 125.2MB in the beginning and 123.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:57:26,999 INFO L158 Benchmark]: Boogie Preprocessor took 34.16ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 122.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:26,999 INFO L158 Benchmark]: RCFGBuilder took 333.08ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 111.1MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:57:27,000 INFO L158 Benchmark]: TraceAbstraction took 2375.68ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 82.5MB in the end (delta: 28.0MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-19 04:57:27,000 INFO L158 Benchmark]: Witness Printer took 98.01ms. Allocated memory is still 167.8MB. Free memory was 82.5MB in the beginning and 78.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:57:27,002 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 72.6MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.95ms. Allocated memory is still 167.8MB. Free memory was 135.2MB in the beginning and 125.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.19ms. Allocated memory is still 167.8MB. Free memory was 125.2MB in the beginning and 123.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.16ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 122.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.08ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 111.1MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2375.68ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 82.5MB in the end (delta: 28.0MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 98.01ms. Allocated memory is still 167.8MB. Free memory was 82.5MB in the beginning and 78.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 16 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 52 HoareAnnotationTreeSize, 1 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 6 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/12 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: OVERALL_TIME: 0.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 13, TOOLS_QUANTIFIERELIM_TIME: 0.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 25, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 61, DAG_COMPRESSION_RETAINED_NODES: 27, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((x == y) && (0 <= x)) && (y <= 2147483647)) RESULT: Ultimate proved your program to be correct! [2023-11-19 04:57:27,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8757e093-d2e9-4b54-bbbb-e07bd9c00e73/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE