./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-007.c --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_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/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_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-007.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/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_f5287675-6f5f-4951-9878-d528119a6db2/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 79ad480fc17f59cc4e46ec2dbc023b5da3460c72b3c8ca1cc6dbc35a93f8cf64 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:01,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:01,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:04:01,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:01,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:01,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:01,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:01,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:01,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:01,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:01,650 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:01,651 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:01,652 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:01,654 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:01,655 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:01,655 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:01,656 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:01,656 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:01,657 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:01,658 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:01,658 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:01,659 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:01,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:01,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:01,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:04:01,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:01,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:04:01,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:01,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:01,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:01,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:01,665 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:04:01,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:04:01,666 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:04:01,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:01,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:01,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:01,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:01,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:01,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:01,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:01,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:01,669 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:01,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:01,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:01,670 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:01,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:01,671 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_f5287675-6f5f-4951-9878-d528119a6db2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79ad480fc17f59cc4e46ec2dbc023b5da3460c72b3c8ca1cc6dbc35a93f8cf64 [2023-11-19 05:04:02,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:02,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:02,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:02,055 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:02,056 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:02,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/xcsp/AllInterval-007.c [2023-11-19 05:04:05,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:05,734 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:05,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/sv-benchmarks/c/xcsp/AllInterval-007.c [2023-11-19 05:04:05,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/data/a25bf5626/71fee82a561c41a699376c7c665f9bdc/FLAG264c22710 [2023-11-19 05:04:05,767 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/data/a25bf5626/71fee82a561c41a699376c7c665f9bdc [2023-11-19 05:04:05,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:05,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:05,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:05,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:05,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:05,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b31e732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:05, skipping insertion in model container [2023-11-19 05:04:05,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:05" (1/1) ... [2023-11-19 05:04:05,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:06,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:06,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:06,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:06,158 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:06,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06 WrapperNode [2023-11-19 05:04:06,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:06,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:06,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:06,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:06,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,222 INFO L138 Inliner]: procedures = 13, calls = 76, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 211 [2023-11-19 05:04:06,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:06,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:06,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:06,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:06,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:06,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:06,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:06,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:06,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (1/1) ... [2023-11-19 05:04:06,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:06,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:06,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:06,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2023-11-19 05:04:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2023-11-19 05:04:06,428 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:06,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:06,843 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:06,877 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:06,877 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:04:06,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:06 BoogieIcfgContainer [2023-11-19 05:04:06,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:06,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:06,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:06,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:06,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:05" (1/3) ... [2023-11-19 05:04:06,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735947a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:06, skipping insertion in model container [2023-11-19 05:04:06,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:06" (2/3) ... [2023-11-19 05:04:06,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735947a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:06, skipping insertion in model container [2023-11-19 05:04:06,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:06" (3/3) ... [2023-11-19 05:04:06,898 INFO L112 eAbstractionObserver]: Analyzing ICFG AllInterval-007.c [2023-11-19 05:04:06,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:06,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-19 05:04:06,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:07,002 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;@60c4778b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:07,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-19 05:04:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 77 states have internal predecessors, (83), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-19 05:04:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-19 05:04:07,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:07,036 INFO L195 NwaCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:07,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-19 05:04:07,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 154720438, now seen corresponding path program 1 times [2023-11-19 05:04:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:07,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770461739] [2023-11-19 05:04:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:07,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2023-11-19 05:04:08,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770461739] [2023-11-19 05:04:08,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770461739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:04:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508747892] [2023-11-19 05:04:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:08,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:08,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:08,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5287675-6f5f-4951-9878-d528119a6db2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:04:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:08,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:04:08,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2023-11-19 05:04:09,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2023-11-19 05:04:10,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508747892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1549612759] [2023-11-19 05:04:10,384 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2023-11-19 05:04:10,384 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:10,389 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:10,395 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:10,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:23,915 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-11-19 05:04:23,917 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1549612759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:55,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:04:55,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [4, 4, 4] total 85 [2023-11-19 05:04:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722727716] [2023-11-19 05:04:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:55,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-11-19 05:04:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:55,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-11-19 05:04:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3472, Invalid=3838, Unknown=0, NotChecked=0, Total=7310 [2023-11-19 05:04:55,485 INFO L87 Difference]: Start difference. First operand has 147 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 77 states have internal predecessors, (83), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 80 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 05:04:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:57,593 INFO L93 Difference]: Finished difference Result 147 states and 219 transitions. [2023-11-19 05:04:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-19 05:04:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 202 [2023-11-19 05:04:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:57,615 INFO L225 Difference]: With dead ends: 147 [2023-11-19 05:04:57,615 INFO L226 Difference]: Without dead ends: 131 [2023-11-19 05:04:57,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 523 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=3472, Invalid=3838, Unknown=0, NotChecked=0, Total=7310 [2023-11-19 05:04:57,627 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 378 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:57,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 180 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 05:04:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.