./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-005.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-005.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX --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 a9f3ee9eee9186ec2e7139b6da07915cfbf3926b7d28b3dac4ebf3fd8205beb2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:35,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:36,016 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 01:03:36,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:36,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:36,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:36,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:36,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:36,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:36,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:36,053 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:36,054 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:36,055 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:36,055 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:36,056 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:36,057 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:36,057 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:36,058 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:36,058 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:36,059 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:36,060 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:36,064 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:36,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:36,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:36,075 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:36,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:36,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:36,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:36,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:36,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:36,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:36,079 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 01:03:36,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:36,080 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:36,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:36,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:36,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:36,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:36,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:36,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:36,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:36,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:36,084 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:36,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:36,084 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:36,085 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:36,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:36,086 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_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f3ee9eee9186ec2e7139b6da07915cfbf3926b7d28b3dac4ebf3fd8205beb2 [2023-11-12 01:03:36,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:36,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:36,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:36,415 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:36,415 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:36,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/xcsp/AllInterval-005.c [2023-11-12 01:03:39,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:39,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:39,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/sv-benchmarks/c/xcsp/AllInterval-005.c [2023-11-12 01:03:39,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/data/4da9ca2cb/862e9d29f4d44e96841ad58b2d6af48c/FLAG57a7d5611 [2023-11-12 01:03:39,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/data/4da9ca2cb/862e9d29f4d44e96841ad58b2d6af48c [2023-11-12 01:03:39,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:39,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:39,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:39,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:39,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:39,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:39" (1/1) ... [2023-11-12 01:03:39,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d1ed25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:39, skipping insertion in model container [2023-11-12 01:03:39,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:39" (1/1) ... [2023-11-12 01:03:39,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:40,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:40,175 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:40,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:40,246 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:40,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40 WrapperNode [2023-11-12 01:03:40,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:40,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:40,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:40,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:40,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,297 INFO L138 Inliner]: procedures = 13, calls = 46, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2023-11-12 01:03:40,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:40,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:40,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:40,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:40,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:40,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:40,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:40,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:40,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:40,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:40,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2023-11-12 01:03:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2023-11-12 01:03:40,515 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:40,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:40,875 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:40,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:40,908 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:03:40,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:40 BoogieIcfgContainer [2023-11-12 01:03:40,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:40,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:40,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:40,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:40,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:39" (1/3) ... [2023-11-12 01:03:40,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5aa0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:40, skipping insertion in model container [2023-11-12 01:03:40,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40" (2/3) ... [2023-11-12 01:03:40,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5aa0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:40, skipping insertion in model container [2023-11-12 01:03:40,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:40" (3/3) ... [2023-11-12 01:03:40,923 INFO L112 eAbstractionObserver]: Analyzing ICFG AllInterval-005.c [2023-11-12 01:03:40,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:40,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-12 01:03:40,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:41,001 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;@2a9f2056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:41,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 01:03:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 53 states have internal predecessors, (57), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-12 01:03:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-12 01:03:41,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:41,022 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-12 01:03:41,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 01:03:41,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:41,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1665929348, now seen corresponding path program 1 times [2023-11-12 01:03:41,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:41,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244077092] [2023-11-12 01:03:41,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:41,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2023-11-12 01:03:42,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244077092] [2023-11-12 01:03:42,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244077092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:42,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938307028] [2023-11-12 01:03:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:42,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:42,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:42,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:03:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:42,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:42,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2023-11-12 01:03:42,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2023-11-12 01:03:43,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938307028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:43,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1926668836] [2023-11-12 01:03:43,165 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-11-12 01:03:43,165 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:43,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:43,175 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:43,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:48,952 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-11-12 01:03:48,954 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1926668836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:58,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:58,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 53 [2023-11-12 01:03:58,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829140021] [2023-11-12 01:03:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-12 01:03:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-12 01:03:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1312, Invalid=1550, Unknown=0, NotChecked=0, Total=2862 [2023-11-12 01:03:58,334 INFO L87 Difference]: Start difference. First operand has 93 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 53 states have internal predecessors, (57), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 48 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 01:03:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:59,243 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2023-11-12 01:03:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-12 01:03:59,246 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 114 [2023-11-12 01:03:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:59,256 INFO L225 Difference]: With dead ends: 93 [2023-11-12 01:03:59,256 INFO L226 Difference]: Without dead ends: 81 [2023-11-12 01:03:59,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1312, Invalid=1550, Unknown=0, NotChecked=0, Total=2862 [2023-11-12 01:03:59,264 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 180 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:59,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 114 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 01:03:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-12 01:03:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-12 01:03:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 42 states have internal predecessors, (45), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-12 01:03:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 119 transitions. [2023-11-12 01:03:59,340 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 119 transitions. Word has length 114 [2023-11-12 01:03:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:59,342 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 119 transitions. [2023-11-12 01:03:59,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 01:03:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2023-11-12 01:03:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-12 01:03:59,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:59,348 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-12 01:03:59,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:59,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 01:03:59,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 01:03:59,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1354180590, now seen corresponding path program 1 times [2023-11-12 01:03:59,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:59,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589531604] [2023-11-12 01:03:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:59,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2023-11-12 01:03:59,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589531604] [2023-11-12 01:03:59,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589531604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:59,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:59,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501805710] [2023-11-12 01:03:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:59,678 INFO L87 Difference]: Start difference. First operand 81 states and 119 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-12 01:03:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:59,747 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2023-11-12 01:03:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:59,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 117 [2023-11-12 01:03:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:59,753 INFO L225 Difference]: With dead ends: 84 [2023-11-12 01:03:59,753 INFO L226 Difference]: Without dead ends: 80 [2023-11-12 01:03:59,754 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 [2023-11-12 01:03:59,756 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 11 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:59,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 192 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-12 01:03:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2023-11-12 01:03:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-12 01:03:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 115 transitions. [2023-11-12 01:03:59,815 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 115 transitions. Word has length 117 [2023-11-12 01:03:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:59,817 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 115 transitions. [2023-11-12 01:03:59,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-12 01:03:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 115 transitions. [2023-11-12 01:03:59,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 01:03:59,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:59,829 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-12 01:03:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:03:59,830 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 01:03:59,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -970074581, now seen corresponding path program 1 times [2023-11-12 01:03:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:59,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82874018] [2023-11-12 01:03:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-11-12 01:04:00,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:00,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82874018] [2023-11-12 01:04:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82874018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:04:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37784921] [2023-11-12 01:04:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:00,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:04:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:04:00,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:04:00,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:04:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:00,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 01:04:00,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2023-11-12 01:04:00,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:04:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2023-11-12 01:04:00,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37784921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:04:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [175335789] [2023-11-12 01:04:00,661 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-12 01:04:00,662 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:04:00,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:04:00,663 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:04:00,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:04:04,938 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-11-12 01:04:04,939 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:04:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [175335789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:04:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [5, 5, 5] total 56 [2023-11-12 01:04:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770013171] [2023-11-12 01:04:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-12 01:04:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-12 01:04:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1374, Invalid=1818, Unknown=0, NotChecked=0, Total=3192 [2023-11-12 01:04:15,077 INFO L87 Difference]: Start difference. First operand 77 states and 115 transitions. Second operand has 50 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 01:04:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:15,964 INFO L93 Difference]: Finished difference Result 78 states and 116 transitions. [2023-11-12 01:04:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-12 01:04:15,965 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 118 [2023-11-12 01:04:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:15,971 INFO L225 Difference]: With dead ends: 78 [2023-11-12 01:04:15,971 INFO L226 Difference]: Without dead ends: 77 [2023-11-12 01:04:15,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1374, Invalid=1818, Unknown=0, NotChecked=0, Total=3192 [2023-11-12 01:04:15,976 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 51 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:15,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 91 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 01:04:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-12 01:04:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-11-12 01:04:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 37 states have internal predecessors, (40), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-12 01:04:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2023-11-12 01:04:16,023 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 118 [2023-11-12 01:04:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:16,029 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2023-11-12 01:04:16,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 01:04:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2023-11-12 01:04:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-12 01:04:16,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:16,034 INFO L195 NwaCegarLoop]: trace histogram [35, 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] [2023-11-12 01:04:16,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 01:04:16,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:04:16,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 01:04:16,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1352695111, now seen corresponding path program 1 times [2023-11-12 01:04:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:16,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342253001] [2023-11-12 01:04:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-12 01:04:16,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342253001] [2023-11-12 01:04:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342253001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:04:16,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309074472] [2023-11-12 01:04:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:16,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:04:16,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:04:16,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:04:16,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c9eb45c-0fbb-44e9-8262-77d13b81c634/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 01:04:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:16,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 01:04:16,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2023-11-12 01:04:16,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:04:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2023-11-12 01:04:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309074472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:04:17,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [647100418] [2023-11-12 01:04:17,022 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-11-12 01:04:17,023 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:04:17,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:04:17,024 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:04:17,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:04:21,557 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-11-12 01:04:21,560 INFO L180 IcfgInterpreter]: Interpretation finished