./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91 --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 f3d22aeda2fb15b9dd79854281ee0f5e475c0f7ee1551b76594f45703ddc81df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:07,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:08,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:59:08,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:08,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:08,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:08,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:08,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:08,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:08,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:08,063 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:08,064 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:08,065 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:08,067 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:08,067 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:08,068 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:08,068 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:08,069 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:08,069 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:08,070 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:08,070 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:08,071 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:08,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:08,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:08,074 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:59:08,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:08,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:59:08,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:08,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:08,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:08,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:08,078 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:59:08,078 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:59:08,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:59:08,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:08,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:08,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:08,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:08,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:08,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:08,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:08,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:08,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:08,081 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:08,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:08,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:08,083 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:08,083 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:08,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:08,083 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_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3d22aeda2fb15b9dd79854281ee0f5e475c0f7ee1551b76594f45703ddc81df [2023-11-24 23:59:08,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:08,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:08,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:08,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:08,413 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:08,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2023-11-24 23:59:11,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:12,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:12,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2023-11-24 23:59:12,157 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/data/cc5d5f526/94cda5e9c6084391b7ffbf6fa8a2bc83/FLAG41d9d6aa2 [2023-11-24 23:59:12,174 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/data/cc5d5f526/94cda5e9c6084391b7ffbf6fa8a2bc83 [2023-11-24 23:59:12,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:12,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:12,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:12,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:12,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:12,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638c8522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12, skipping insertion in model container [2023-11-24 23:59:12,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:12,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:12,389 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:12,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:12,418 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:12,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12 WrapperNode [2023-11-24 23:59:12,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:12,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:12,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:12,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:12,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,454 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-11-24 23:59:12,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:12,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:12,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:12,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:12,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:12,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:12,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:12,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:12,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:12,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:12,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:12,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:59:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:59:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:59:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:59:12,663 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:12,666 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:12,872 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:12,939 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:12,939 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:59:12,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:12 BoogieIcfgContainer [2023-11-24 23:59:12,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:12,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:12,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:12,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:12,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:12" (1/3) ... [2023-11-24 23:59:12,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d445a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:12, skipping insertion in model container [2023-11-24 23:59:12,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (2/3) ... [2023-11-24 23:59:12,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d445a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:12, skipping insertion in model container [2023-11-24 23:59:12,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:12" (3/3) ... [2023-11-24 23:59:12,953 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2023-11-24 23:59:12,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:12,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:59:13,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:13,033 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;@acdee98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:13,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:59:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 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) [2023-11-24 23:59:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:59:13,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:13,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:59:13,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:13,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:13,052 INFO L85 PathProgramCache]: Analyzing trace with hash 3020661, now seen corresponding path program 1 times [2023-11-24 23:59:13,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:13,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736600084] [2023-11-24 23:59:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:13,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:13,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736600084] [2023-11-24 23:59:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736600084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:13,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:59:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742487168] [2023-11-24 23:59:13,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:13,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:13,380 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2023-11-24 23:59:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:13,490 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-11-24 23:59:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:59:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2023-11-24 23:59:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:13,509 INFO L225 Difference]: With dead ends: 24 [2023-11-24 23:59:13,509 INFO L226 Difference]: Without dead ends: 20 [2023-11-24 23:59:13,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:59:13,518 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:13,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:59:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-24 23:59:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-24 23:59:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 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) [2023-11-24 23:59:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-24 23:59:13,553 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2023-11-24 23:59:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:13,553 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-24 23:59:13,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2023-11-24 23:59:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-24 23:59:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:59:13,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:13,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:59:13,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:59:13,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:13,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash 3020921, now seen corresponding path program 1 times [2023-11-24 23:59:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:13,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477173594] [2023-11-24 23:59:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:13,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477173594] [2023-11-24 23:59:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477173594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:13,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:59:13,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227533041] [2023-11-24 23:59:13,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:13,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:59:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:59:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:59:13,699 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:59:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:13,723 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-24 23:59:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:59:13,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:59:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:13,725 INFO L225 Difference]: With dead ends: 39 [2023-11-24 23:59:13,725 INFO L226 Difference]: Without dead ends: 20 [2023-11-24 23:59:13,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:59:13,728 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:59:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-24 23:59:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-24 23:59:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 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) [2023-11-24 23:59:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-24 23:59:13,735 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2023-11-24 23:59:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:13,735 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-24 23:59:13,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:59:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-24 23:59:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:59:13,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:13,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:59:13,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:59:13,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:13,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash 95677528, now seen corresponding path program 1 times [2023-11-24 23:59:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:13,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754361702] [2023-11-24 23:59:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:13,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:13,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754361702] [2023-11-24 23:59:13,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754361702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:13,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:13,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:59:13,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525529694] [2023-11-24 23:59:13,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:13,882 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:59:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:13,950 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-11-24 23:59:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:59:13,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:59:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:13,953 INFO L225 Difference]: With dead ends: 43 [2023-11-24 23:59:13,953 INFO L226 Difference]: Without dead ends: 37 [2023-11-24 23:59:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:59:13,955 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:13,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:59:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-24 23:59:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2023-11-24 23:59:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 24 states have internal predecessors, (27), 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) [2023-11-24 23:59:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-24 23:59:13,966 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2023-11-24 23:59:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:13,966 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-24 23:59:13,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:59:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-24 23:59:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:59:13,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:13,967 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:59:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:59:13,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:13,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -205746350, now seen corresponding path program 1 times [2023-11-24 23:59:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026807925] [2023-11-24 23:59:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:14,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026807925] [2023-11-24 23:59:14,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026807925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881138999] [2023-11-24 23:59:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:14,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:14,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:59:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:14,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:59:14,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:14,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881138999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:14,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:59:14,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-24 23:59:14,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924942022] [2023-11-24 23:59:14,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:14,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:59:14,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:59:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:59:14,384 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2023-11-24 23:59:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:14,460 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-11-24 23:59:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:59:14,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 [2023-11-24 23:59:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:14,462 INFO L225 Difference]: With dead ends: 25 [2023-11-24 23:59:14,463 INFO L226 Difference]: Without dead ends: 24 [2023-11-24 23:59:14,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:59:14,465 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:14,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:59:14,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-24 23:59:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-24 23:59:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 23 states have internal predecessors, (26), 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) [2023-11-24 23:59:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-24 23:59:14,473 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 7 [2023-11-24 23:59:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:14,473 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-24 23:59:14,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2023-11-24 23:59:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-24 23:59:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:59:14,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:14,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:59:14,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:14,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-24 23:59:14,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:14,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash -205746090, now seen corresponding path program 1 times [2023-11-24 23:59:14,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:14,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136872261] [2023-11-24 23:59:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:14,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:59:14,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:14,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136872261] [2023-11-24 23:59:14,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136872261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:14,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:14,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:59:14,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212950899] [2023-11-24 23:59:14,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:14,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:14,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:14,837 INFO L87 Difference]: Start difference. First operand 24 states and 26 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) [2023-11-24 23:59:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:14,911 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-11-24 23:59:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:59:14,911 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 [2023-11-24 23:59:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:14,914 INFO L225 Difference]: With dead ends: 35 [2023-11-24 23:59:14,915 INFO L226 Difference]: Without dead ends: 33 [2023-11-24 23:59:14,915 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 [2023-11-24 23:59:14,917 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:14,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 25 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:59:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-24 23:59:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-11-24 23:59:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 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) [2023-11-24 23:59:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-24 23:59:14,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 7 [2023-11-24 23:59:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:14,933 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-24 23:59:14,933 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) [2023-11-24 23:59:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-24 23:59:14,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:59:14,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:14,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-24 23:59:14,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:59:14,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:14,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2083169500, now seen corresponding path program 1 times [2023-11-24 23:59:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377985146] [2023-11-24 23:59:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:14,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:15,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:15,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377985146] [2023-11-24 23:59:15,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377985146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:15,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174560229] [2023-11-24 23:59:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:15,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:15,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:15,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:15,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:59:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:15,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:59:15,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:15,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:15,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174560229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [485959628] [2023-11-24 23:59:15,285 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-24 23:59:15,285 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:15,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:15,296 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:15,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:16,416 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:16,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [485959628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:16,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:16,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 14 [2023-11-24 23:59:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090604951] [2023-11-24 23:59:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:16,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:59:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:59:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:59:16,890 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-11-24 23:59:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:17,240 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2023-11-24 23:59:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:59:17,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 8 [2023-11-24 23:59:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:17,242 INFO L225 Difference]: With dead ends: 33 [2023-11-24 23:59:17,242 INFO L226 Difference]: Without dead ends: 32 [2023-11-24 23:59:17,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:59:17,244 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:17,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:59:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-24 23:59:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-24 23:59:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.32) internal successors, (33), 29 states have internal predecessors, (33), 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) [2023-11-24 23:59:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-24 23:59:17,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 8 [2023-11-24 23:59:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:17,253 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-24 23:59:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-11-24 23:59:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-24 23:59:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:59:17,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:17,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-24 23:59:17,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:17,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:59:17,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:17,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:17,462 INFO L85 PathProgramCache]: Analyzing trace with hash 483341470, now seen corresponding path program 1 times [2023-11-24 23:59:17,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:17,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872229210] [2023-11-24 23:59:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:17,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:59:17,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872229210] [2023-11-24 23:59:17,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872229210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255010030] [2023-11-24 23:59:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:17,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:17,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:17,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:17,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:59:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:17,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:59:17,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:59:17,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:59:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255010030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1216260733] [2023-11-24 23:59:17,917 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-24 23:59:17,917 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:17,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:17,918 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:17,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:19,465 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:19,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '652#(and (<= |ULTIMATE.start_foo_#res#1| 2147483647) (<= 32 |ULTIMATE.start_foo_#res#1|) (<= (+ 2147483650 |ULTIMATE.start_main_#t~post2#1|) 0) (exists ((|v_#memory_int_24| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_24| |ULTIMATE.start_main_~#b~0#1.base| (store (select |v_#memory_int_24| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| (* |ULTIMATE.start_main_~i~1#1| 4)) |ULTIMATE.start_foo_#res#1|)))) (= |ULTIMATE.start_main_#t~post2#1| |ULTIMATE.start_main_~i~1#1|))' at error location [2023-11-24 23:59:19,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:19,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:19,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-24 23:59:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783393686] [2023-11-24 23:59:19,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:19,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:59:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:59:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:59:19,663 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-11-24 23:59:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:19,755 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2023-11-24 23:59:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:59:19,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 14 [2023-11-24 23:59:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:19,757 INFO L225 Difference]: With dead ends: 64 [2023-11-24 23:59:19,757 INFO L226 Difference]: Without dead ends: 40 [2023-11-24 23:59:19,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:59:19,758 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:19,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 58 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:59:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-24 23:59:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-24 23:59:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 39 states have internal predecessors, (43), 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) [2023-11-24 23:59:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-11-24 23:59:19,767 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 14 [2023-11-24 23:59:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:19,767 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-11-24 23:59:19,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-11-24 23:59:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-11-24 23:59:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:59:19,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:19,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:59:19,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:19,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:59:19,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:19,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1263339718, now seen corresponding path program 1 times [2023-11-24 23:59:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151943526] [2023-11-24 23:59:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:19,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:59:20,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151943526] [2023-11-24 23:59:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151943526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38416306] [2023-11-24 23:59:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:20,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:20,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:20,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:59:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:20,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:59:20,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:59:20,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:59:20,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38416306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:20,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [908031163] [2023-11-24 23:59:20,718 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-24 23:59:20,720 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:20,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:20,721 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:20,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:22,026 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [908031163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:22,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 9, 9] total 30 [2023-11-24 23:59:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282074498] [2023-11-24 23:59:22,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:59:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:22,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:59:22,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:59:22,393 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 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) [2023-11-24 23:59:22,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:22,630 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-11-24 23:59:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:59:22,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 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) Word has length 22 [2023-11-24 23:59:22,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:22,631 INFO L225 Difference]: With dead ends: 40 [2023-11-24 23:59:22,631 INFO L226 Difference]: Without dead ends: 37 [2023-11-24 23:59:22,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2023-11-24 23:59:22,633 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:22,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:59:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-24 23:59:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-24 23:59:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 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) [2023-11-24 23:59:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-11-24 23:59:22,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 22 [2023-11-24 23:59:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:22,642 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-11-24 23:59:22,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 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) [2023-11-24 23:59:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-11-24 23:59:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:59:22,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:22,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:59:22,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:22,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:59:22,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 508825685, now seen corresponding path program 1 times [2023-11-24 23:59:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:22,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229819638] [2023-11-24 23:59:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:59:22,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229819638] [2023-11-24 23:59:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229819638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580910647] [2023-11-24 23:59:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:22,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:22,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:22,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:23,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:59:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:23,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:59:23,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:59:23,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:59:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580910647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730189486] [2023-11-24 23:59:23,394 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-24 23:59:23,394 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:23,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:23,395 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:23,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:24,603 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:25,310 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1209#(and (<= (mod |ULTIMATE.start_main_~i~1#1| 4294967296) 31) (= 32 (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| (* |ULTIMATE.start_main_~i~1#1| 4)))) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~i~1#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-24 23:59:25,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:25,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:25,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2023-11-24 23:59:25,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870281167] [2023-11-24 23:59:25,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:25,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-24 23:59:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-24 23:59:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:59:25,314 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 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) [2023-11-24 23:59:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:25,924 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2023-11-24 23:59:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 23:59:25,931 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 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 23 [2023-11-24 23:59:25,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:25,933 INFO L225 Difference]: With dead ends: 90 [2023-11-24 23:59:25,933 INFO L226 Difference]: Without dead ends: 65 [2023-11-24 23:59:25,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2023-11-24 23:59:25,936 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 100 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:25,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 36 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:59:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-24 23:59:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-24 23:59:25,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 64 states have internal predecessors, (68), 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) [2023-11-24 23:59:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-11-24 23:59:25,952 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 23 [2023-11-24 23:59:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:25,952 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-11-24 23:59:25,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 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) [2023-11-24 23:59:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-11-24 23:59:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 23:59:25,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:25,955 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:59:25,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:26,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:59:26,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1256268017, now seen corresponding path program 2 times [2023-11-24 23:59:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821434894] [2023-11-24 23:59:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:59:26,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821434894] [2023-11-24 23:59:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821434894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360000533] [2023-11-24 23:59:26,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:59:26,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:26,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:26,711 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:26,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:59:26,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:59:26,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:26,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:59:26,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-24 23:59:26,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-24 23:59:26,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360000533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [549044501] [2023-11-24 23:59:27,000 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-24 23:59:27,000 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:27,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:27,001 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:27,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:28,176 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:29,427 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1714#(and (= |ULTIMATE.start_main_~#mask~0#1.offset| 0) (<= (mod |ULTIMATE.start_main_~i~1#1| 4294967296) 31) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (* |ULTIMATE.start_main_~i~1#1| 4)) 32) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (<= 2 |ULTIMATE.start_main_~#mask~0#1.base|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~i~1#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-24 23:59:29,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:29,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:29,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 4, 4] total 23 [2023-11-24 23:59:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987441941] [2023-11-24 23:59:29,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:29,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-24 23:59:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:29,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-24 23:59:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:59:29,430 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2023-11-24 23:59:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:30,635 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2023-11-24 23:59:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-24 23:59:30,636 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 39 [2023-11-24 23:59:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:30,639 INFO L225 Difference]: With dead ends: 148 [2023-11-24 23:59:30,640 INFO L226 Difference]: Without dead ends: 107 [2023-11-24 23:59:30,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 93 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1077, Invalid=4775, Unknown=0, NotChecked=0, Total=5852 [2023-11-24 23:59:30,643 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 161 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:30,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 37 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:59:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-24 23:59:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2023-11-24 23:59:30,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 99 states have internal predecessors, (105), 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) [2023-11-24 23:59:30,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2023-11-24 23:59:30,660 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 39 [2023-11-24 23:59:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:30,661 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2023-11-24 23:59:30,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2023-11-24 23:59:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2023-11-24 23:59:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-24 23:59:30,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:30,663 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 1, 1, 1] [2023-11-24 23:59:30,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:30,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:59:30,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:30,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1811737838, now seen corresponding path program 1 times [2023-11-24 23:59:30,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:30,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792053984] [2023-11-24 23:59:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:30,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-24 23:59:31,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792053984] [2023-11-24 23:59:31,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792053984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068723835] [2023-11-24 23:59:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:31,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:31,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:31,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:31,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:59:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:31,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:59:31,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 210 proven. 92 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-24 23:59:31,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 210 proven. 92 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-24 23:59:31,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068723835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:31,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [838976658] [2023-11-24 23:59:31,981 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-24 23:59:31,981 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:31,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:31,981 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:31,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:32,567 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:33,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2519#(and (<= 2147483647 |ULTIMATE.start_main_#t~post2#1|) (= |ULTIMATE.start_main_~#mask~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_foo_#res#1| 2147483647) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 32 |ULTIMATE.start_foo_#res#1|) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (exists ((|v_#memory_int_45| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_45| |ULTIMATE.start_main_~#b~0#1.base| (store (select |v_#memory_int_45| |ULTIMATE.start_main_~#b~0#1.base|) (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_foo_#res#1|)))) (<= 2 |ULTIMATE.start_main_~#mask~0#1.base|) (= |ULTIMATE.start_main_#t~post2#1| |ULTIMATE.start_main_~i~1#1|))' at error location [2023-11-24 23:59:33,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:33,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 40 [2023-11-24 23:59:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171351763] [2023-11-24 23:59:33,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-24 23:59:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-24 23:59:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2023-11-24 23:59:33,665 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 40 states, 40 states have (on average 1.9) internal successors, (76), 40 states have internal predecessors, (76), 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) [2023-11-24 23:59:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:36,322 INFO L93 Difference]: Finished difference Result 254 states and 290 transitions. [2023-11-24 23:59:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-11-24 23:59:36,323 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 40 states have internal predecessors, (76), 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 57 [2023-11-24 23:59:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:36,324 INFO L225 Difference]: With dead ends: 254 [2023-11-24 23:59:36,324 INFO L226 Difference]: Without dead ends: 181 [2023-11-24 23:59:36,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 112 SyntacticMatches, 18 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6099 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3507, Invalid=13005, Unknown=0, NotChecked=0, Total=16512 [2023-11-24 23:59:36,331 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 264 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:36,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 28 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:59:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-24 23:59:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-24 23:59:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 179 states have (on average 1.0335195530726258) internal successors, (185), 180 states have internal predecessors, (185), 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) [2023-11-24 23:59:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2023-11-24 23:59:36,358 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 57 [2023-11-24 23:59:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:36,359 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2023-11-24 23:59:36,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 40 states have internal predecessors, (76), 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) [2023-11-24 23:59:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2023-11-24 23:59:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-24 23:59:36,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:36,368 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 2, 1, 1] [2023-11-24 23:59:36,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:36,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:59:36,579 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:36,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1631535788, now seen corresponding path program 2 times [2023-11-24 23:59:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:36,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468524086] [2023-11-24 23:59:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1806 proven. 425 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2023-11-24 23:59:38,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:38,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468524086] [2023-11-24 23:59:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468524086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:38,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224760926] [2023-11-24 23:59:38,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:59:38,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:38,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:38,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:38,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:59:38,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:59:38,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:38,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:59:38,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1810 proven. 0 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2023-11-24 23:59:39,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:39,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224760926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:39,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:59:39,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [37] total 40 [2023-11-24 23:59:39,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773379966] [2023-11-24 23:59:39,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:39,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:59:39,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:59:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2023-11-24 23:59:39,276 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-24 23:59:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:39,375 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2023-11-24 23:59:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:59:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 166 [2023-11-24 23:59:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:39,383 INFO L225 Difference]: With dead ends: 181 [2023-11-24 23:59:39,384 INFO L226 Difference]: Without dead ends: 180 [2023-11-24 23:59:39,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2023-11-24 23:59:39,386 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:39,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:59:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-24 23:59:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-24 23:59:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0279329608938548) internal successors, (184), 179 states have internal predecessors, (184), 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) [2023-11-24 23:59:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2023-11-24 23:59:39,449 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 166 [2023-11-24 23:59:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:39,451 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2023-11-24 23:59:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-24 23:59:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2023-11-24 23:59:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-24 23:59:39,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:39,460 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2023-11-24 23:59:39,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:39,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:59:39,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:39,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash -27095121, now seen corresponding path program 3 times [2023-11-24 23:59:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:39,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019980598] [2023-11-24 23:59:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:39,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 1807 proven. 425 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2023-11-24 23:59:41,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019980598] [2023-11-24 23:59:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019980598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760930341] [2023-11-24 23:59:41,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:59:41,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:41,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:41,835 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:41,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:59:42,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:59:42,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:42,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-24 23:59:42,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 1807 proven. 425 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2023-11-24 23:59:44,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 1807 proven. 425 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2023-11-24 23:59:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760930341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880488227] [2023-11-24 23:59:46,486 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-24 23:59:46,486 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:46,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:46,486 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:46,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:47,330 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:53,391 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5468#(and (<= (mod |ULTIMATE.start_main_~i~1#1| 4294967296) 31) (= 32 (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| (* |ULTIMATE.start_main_~i~1#1| 4)))) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~i~1#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-24 23:59:53,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:53,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:59:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 107 [2023-11-24 23:59:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554753006] [2023-11-24 23:59:53,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:53,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-11-24 23:59:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-11-24 23:59:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2639, Invalid=10471, Unknown=0, NotChecked=0, Total=13110 [2023-11-24 23:59:53,401 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand has 107 states, 107 states have (on average 1.6168224299065421) internal successors, (173), 107 states have internal predecessors, (173), 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) [2023-11-24 23:59:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:55,272 INFO L93 Difference]: Finished difference Result 441 states and 493 transitions. [2023-11-24 23:59:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-24 23:59:55,273 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.6168224299065421) internal successors, (173), 107 states have internal predecessors, (173), 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 179 [2023-11-24 23:59:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:55,275 INFO L225 Difference]: With dead ends: 441 [2023-11-24 23:59:55,275 INFO L226 Difference]: Without dead ends: 315 [2023-11-24 23:59:55,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 402 SyntacticMatches, 57 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12948 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4627, Invalid=16543, Unknown=0, NotChecked=0, Total=21170 [2023-11-24 23:59:55,283 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 276 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:55,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 44 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:59:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-24 23:59:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-24 23:59:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.015923566878981) internal successors, (319), 314 states have internal predecessors, (319), 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) [2023-11-24 23:59:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 319 transitions. [2023-11-24 23:59:55,327 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 319 transitions. Word has length 179 [2023-11-24 23:59:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:55,327 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 319 transitions. [2023-11-24 23:59:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.6168224299065421) internal successors, (173), 107 states have internal predecessors, (173), 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) [2023-11-24 23:59:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 319 transitions. [2023-11-24 23:59:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-24 23:59:55,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:55,334 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2023-11-24 23:59:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:55,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:59:55,552 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:55,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1283299512, now seen corresponding path program 4 times [2023-11-24 23:59:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446366819] [2023-11-24 23:59:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13995 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13983 trivial. 0 not checked. [2023-11-24 23:59:56,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446366819] [2023-11-24 23:59:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446366819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299655557] [2023-11-24 23:59:56,214 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:59:56,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:56,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:56,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899f6e36-257c-4022-8f45-be7a7ed05269/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:59:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:56,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:59:56,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13995 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13983 trivial. 0 not checked. [2023-11-24 23:59:56,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13995 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13983 trivial. 0 not checked. [2023-11-24 23:59:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299655557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954500893] [2023-11-24 23:59:56,719 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-24 23:59:56,719 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:56,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:56,720 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:56,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:57,800 INFO L180 IcfgInterpreter]: Interpretation finished