./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/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_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/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 64bit --witnessprinter.graph.data.programhash d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:22:22,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:22:22,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:22:22,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:22:22,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:22:22,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:22:22,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:22:22,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:22:22,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:22:22,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:22:22,304 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:22:22,305 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:22:22,306 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:22:22,308 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:22:22,308 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:22:22,309 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:22:22,309 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:22:22,309 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:22:22,310 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:22:22,310 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:22:22,311 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:22:22,311 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:22:22,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:22:22,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:22:22,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:22:22,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:22:22,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:22:22,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:22:22,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:22:22,315 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:22:22,317 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:22:22,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:22:22,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:22:22,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:22:22,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:22:22,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:22:22,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:22:22,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:22:22,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:22:22,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:22:22,341 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:22:22,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:22:22,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:22:22,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:22:22,342 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:22:22,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:22:22,343 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_97c74725-bed1-44bf-8a1a-4a52062ea9e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff [2023-11-24 23:22:22,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:22:22,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:22:22,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:22:22,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:22:22,690 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:22:22,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2023-11-24 23:22:25,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:22:25,984 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:22:25,985 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2023-11-24 23:22:25,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/data/67d94f0fa/0a1d641cb7c146198dcbce774f48324d/FLAG3cce44528 [2023-11-24 23:22:26,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/data/67d94f0fa/0a1d641cb7c146198dcbce774f48324d [2023-11-24 23:22:26,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:22:26,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:22:26,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:22:26,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:22:26,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:22:26,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6899899e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26, skipping insertion in model container [2023-11-24 23:22:26,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,086 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:22:26,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:22:26,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:22:26,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:22:26,359 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:22:26,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26 WrapperNode [2023-11-24 23:22:26,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:22:26,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:22:26,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:22:26,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:22:26,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,407 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-11-24 23:22:26,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:22:26,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:22:26,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:22:26,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:22:26,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:22:26,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:22:26,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:22:26,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:22:26,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:22:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:26,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:22:26,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:22:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:22:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:22:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:22:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:22:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:22:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:22:26,650 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:22:26,652 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:22:26,974 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:22:27,013 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:22:27,013 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:22:27,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:22:27 BoogieIcfgContainer [2023-11-24 23:22:27,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:22:27,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:22:27,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:22:27,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:22:27,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:22:26" (1/3) ... [2023-11-24 23:22:27,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9e7335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:22:27, skipping insertion in model container [2023-11-24 23:22:27,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (2/3) ... [2023-11-24 23:22:27,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9e7335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:22:27, skipping insertion in model container [2023-11-24 23:22:27,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:22:27" (3/3) ... [2023-11-24 23:22:27,036 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2023-11-24 23:22:27,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:22:27,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:22:27,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:22:27,125 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;@2ca8e6f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:22:27,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:22:27,129 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 23:22:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:22:27,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:27,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:22:27,138 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 23:22:27,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash 88394, now seen corresponding path program 1 times [2023-11-24 23:22:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:27,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862881116] [2023-11-24 23:22:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:27,450 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 23:22:27,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862881116] [2023-11-24 23:22:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862881116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:27,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124733403] [2023-11-24 23:22:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:27,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:27,506 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 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 23:22:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:27,572 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-11-24 23:22:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:22:27,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-24 23:22:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:27,584 INFO L225 Difference]: With dead ends: 21 [2023-11-24 23:22:27,584 INFO L226 Difference]: Without dead ends: 16 [2023-11-24 23:22:27,588 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 23:22:27,592 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-24 23:22:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-24 23:22:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 states have internal predecessors, (18), 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 23:22:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-24 23:22:27,624 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 3 [2023-11-24 23:22:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:27,625 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-24 23:22:27,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 23:22:27,625 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-24 23:22:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:22:27,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:27,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:22:27,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:22:27,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:27,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2740260, now seen corresponding path program 1 times [2023-11-24 23:22:27,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:27,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395181643] [2023-11-24 23:22:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:27,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:27,726 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 23:22:27,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:27,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395181643] [2023-11-24 23:22:27,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395181643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:27,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666620968] [2023-11-24 23:22:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:27,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:27,732 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:22:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:27,772 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-11-24 23:22:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:22:27,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:22:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:27,775 INFO L225 Difference]: With dead ends: 31 [2023-11-24 23:22:27,775 INFO L226 Difference]: Without dead ends: 19 [2023-11-24 23:22:27,776 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 23:22:27,781 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:27,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-24 23:22:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-24 23:22:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 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 23:22:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-24 23:22:27,788 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2023-11-24 23:22:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:27,789 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-24 23:22:27,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:22:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-24 23:22:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:22:27,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:27,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:22:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:22:27,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:27,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash 30795897, now seen corresponding path program 1 times [2023-11-24 23:22:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136044713] [2023-11-24 23:22:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:22:27,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:27,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136044713] [2023-11-24 23:22:27,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136044713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:27,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:27,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:27,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584115] [2023-11-24 23:22:27,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:27,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:27,944 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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 23:22:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:27,980 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2023-11-24 23:22:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 23:22:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:27,982 INFO L225 Difference]: With dead ends: 19 [2023-11-24 23:22:27,982 INFO L226 Difference]: Without dead ends: 18 [2023-11-24 23:22:27,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:27,984 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:27,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-24 23:22:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-11-24 23:22:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 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 23:22:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-24 23:22:27,990 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2023-11-24 23:22:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:27,991 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-24 23:22:27,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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 23:22:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-24 23:22:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:22:27,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:27,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:27,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:22:27,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:27,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -464738782, now seen corresponding path program 1 times [2023-11-24 23:22:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902704375] [2023-11-24 23:22:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:28,101 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 23:22:28,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:28,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902704375] [2023-11-24 23:22:28,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902704375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:28,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:28,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:28,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445194252] [2023-11-24 23:22:28,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:28,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:28,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:28,105 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:22:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:28,150 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-11-24 23:22:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:22:28,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 23:22:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:28,152 INFO L225 Difference]: With dead ends: 27 [2023-11-24 23:22:28,152 INFO L226 Difference]: Without dead ends: 25 [2023-11-24 23:22:28,153 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 23:22:28,154 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:28,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:28,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-24 23:22:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-11-24 23:22:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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 23:22:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-24 23:22:28,162 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2023-11-24 23:22:28,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:28,162 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-24 23:22:28,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:22:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-24 23:22:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:22:28,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:28,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:28,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:22:28,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:28,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash -464738590, now seen corresponding path program 1 times [2023-11-24 23:22:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:28,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472290455] [2023-11-24 23:22:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:28,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:28,361 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 23:22:28,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:28,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472290455] [2023-11-24 23:22:28,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472290455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:28,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:28,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:22:28,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573320052] [2023-11-24 23:22:28,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:28,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:22:28,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:22:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:22:28,364 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:22:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:28,455 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-11-24 23:22:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:22:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 23:22:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:28,457 INFO L225 Difference]: With dead ends: 24 [2023-11-24 23:22:28,459 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 23:22:28,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:22:28,462 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:28,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:28,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 23:22:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-24 23:22:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 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 23:22:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-24 23:22:28,477 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2023-11-24 23:22:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:28,477 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-24 23:22:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:22:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-24 23:22:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:22:28,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:28,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:28,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:22:28,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:28,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1521994323, now seen corresponding path program 1 times [2023-11-24 23:22:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:28,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793489188] [2023-11-24 23:22:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:28,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793489188] [2023-11-24 23:22:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793489188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:28,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609785621] [2023-11-24 23:22:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:28,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:28,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:28,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:28,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:22:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:28,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:22:28,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:28,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:22:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:28,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609785621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:22:28,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588129824] [2023-11-24 23:22:28,781 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:22:28,782 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:22:28,786 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:22:28,791 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:22:28,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:22:29,517 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:22:29,802 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '370#(and (<= 2147483649 |ULTIMATE.start_main_#t~post7#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|))' at error location [2023-11-24 23:22:29,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:22:29,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:22:29,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-24 23:22:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579436160] [2023-11-24 23:22:29,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:22:29,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:22:29,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:22:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:22:29,816 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 23:22:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:29,897 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-11-24 23:22:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:22:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 10 [2023-11-24 23:22:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:29,900 INFO L225 Difference]: With dead ends: 45 [2023-11-24 23:22:29,900 INFO L226 Difference]: Without dead ends: 28 [2023-11-24 23:22:29,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:22:29,907 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:29,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-24 23:22:29,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-24 23:22:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 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 23:22:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-11-24 23:22:29,922 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2023-11-24 23:22:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:29,923 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-11-24 23:22:29,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 23:22:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-11-24 23:22:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:22:29,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:29,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:29,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:30,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:30,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:30,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:30,133 INFO L85 PathProgramCache]: Analyzing trace with hash -87723635, now seen corresponding path program 2 times [2023-11-24 23:22:30,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:30,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803880953] [2023-11-24 23:22:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:30,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:30,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803880953] [2023-11-24 23:22:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803880953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787047597] [2023-11-24 23:22:30,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:22:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:30,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:30,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:22:30,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-24 23:22:30,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:22:30,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:22:30,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:30,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:22:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:30,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787047597] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:22:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2130070162] [2023-11-24 23:22:30,511 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:22:30,512 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:22:30,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:22:30,512 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:22:30,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:22:30,897 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:22:31,438 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '574#(and (<= 2147483649 |ULTIMATE.start_main_#t~post7#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|))' at error location [2023-11-24 23:22:31,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:22:31,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:22:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-24 23:22:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116260877] [2023-11-24 23:22:31,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:22:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 23:22:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 23:22:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:22:31,441 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 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 23:22:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:31,606 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2023-11-24 23:22:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:22:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 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) Word has length 16 [2023-11-24 23:22:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:31,608 INFO L225 Difference]: With dead ends: 57 [2023-11-24 23:22:31,608 INFO L226 Difference]: Without dead ends: 40 [2023-11-24 23:22:31,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2023-11-24 23:22:31,610 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:31,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 41 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:22:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-24 23:22:31,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-24 23:22:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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 23:22:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-11-24 23:22:31,617 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 16 [2023-11-24 23:22:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:31,617 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-11-24 23:22:31,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 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 23:22:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-11-24 23:22:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:22:31,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:31,619 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:31,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:31,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:31,831 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:22:31,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1094667955, now seen corresponding path program 3 times [2023-11-24 23:22:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:31,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856048183] [2023-11-24 23:22:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:32,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856048183] [2023-11-24 23:22:32,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856048183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594292871] [2023-11-24 23:22:32,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:22:32,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:32,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:32,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:22:32,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:22:32,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:22:32,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 23:22:32,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:32,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:22:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594292871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:22:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026783311] [2023-11-24 23:22:32,774 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:22:32,774 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:22:32,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:22:32,775 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:22:32,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:22:33,049 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:22:33,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '906#(and (<= 2147483649 |ULTIMATE.start_main_#t~post7#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|))' at error location [2023-11-24 23:22:33,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:22:33,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:22:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-11-24 23:22:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173039358] [2023-11-24 23:22:33,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:22:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-24 23:22:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-24 23:22:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 23:22:33,716 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 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 23:22:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:34,120 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2023-11-24 23:22:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 23:22:34,123 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 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 28 [2023-11-24 23:22:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:34,124 INFO L225 Difference]: With dead ends: 81 [2023-11-24 23:22:34,124 INFO L226 Difference]: Without dead ends: 64 [2023-11-24 23:22:34,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=644, Invalid=2112, Unknown=0, NotChecked=0, Total=2756 [2023-11-24 23:22:34,127 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:34,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 71 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:22:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-24 23:22:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-24 23:22:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 63 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 23:22:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2023-11-24 23:22:34,145 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 28 [2023-11-24 23:22:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:34,146 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2023-11-24 23:22:34,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 31 states have internal predecessors, (51), 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 23:22:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2023-11-24 23:22:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:22:34,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:34,151 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:34,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:34,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:34,351 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 23:22:34,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash -851291955, now seen corresponding path program 4 times [2023-11-24 23:22:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405086307] [2023-11-24 23:22:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:35,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:35,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405086307] [2023-11-24 23:22:35,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405086307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:35,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732931254] [2023-11-24 23:22:35,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:22:35,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:35,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:35,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:22:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:35,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-24 23:22:35,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:35,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:22:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:36,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732931254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:22:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072364343] [2023-11-24 23:22:36,713 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:22:36,713 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:22:36,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:22:36,714 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:22:36,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:22:36,994 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:22:38,129 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1494#(and (<= 2147483649 |ULTIMATE.start_main_#t~post7#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|))' at error location [2023-11-24 23:22:38,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:22:38,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:22:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2023-11-24 23:22:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457632976] [2023-11-24 23:22:38,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:22:38,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-24 23:22:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-24 23:22:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1077, Invalid=3893, Unknown=0, NotChecked=0, Total=4970 [2023-11-24 23:22:38,135 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 64 states, 64 states have (on average 1.546875) internal successors, (99), 63 states have internal predecessors, (99), 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 23:22:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:39,229 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2023-11-24 23:22:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-24 23:22:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.546875) internal successors, (99), 63 states have internal predecessors, (99), 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 52 [2023-11-24 23:22:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:39,231 INFO L225 Difference]: With dead ends: 129 [2023-11-24 23:22:39,231 INFO L226 Difference]: Without dead ends: 112 [2023-11-24 23:22:39,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 101 SyntacticMatches, 16 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3867 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2548, Invalid=7552, Unknown=0, NotChecked=0, Total=10100 [2023-11-24 23:22:39,237 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 160 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:39,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 71 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:22:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-24 23:22:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-24 23:22:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.0642201834862386) internal successors, (116), 111 states have internal predecessors, (116), 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 23:22:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2023-11-24 23:22:39,248 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 52 [2023-11-24 23:22:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:39,249 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2023-11-24 23:22:39,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.546875) internal successors, (99), 63 states have internal predecessors, (99), 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 23:22:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2023-11-24 23:22:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-24 23:22:39,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:39,252 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:39,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:39,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:39,458 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 23:22:39,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1531834419, now seen corresponding path program 5 times [2023-11-24 23:22:39,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:39,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611139050] [2023-11-24 23:22:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:42,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:42,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611139050] [2023-11-24 23:22:42,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611139050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:42,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551378087] [2023-11-24 23:22:42,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:22:42,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:42,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:42,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:42,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:23:03,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-11-24 23:23:03,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:23:03,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-24 23:23:03,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:23:04,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:23:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:23:07,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551378087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:23:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2094964991] [2023-11-24 23:23:07,930 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:23:07,930 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:23:07,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:23:07,931 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:23:07,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:23:08,135 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:23:10,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2594#(and (<= 2147483649 |ULTIMATE.start_main_#t~post7#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|))' at error location [2023-11-24 23:23:10,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:23:10,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:23:10,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2023-11-24 23:23:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671122502] [2023-11-24 23:23:10,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:23:10,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-11-24 23:23:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-11-24 23:23:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4181, Invalid=13909, Unknown=0, NotChecked=0, Total=18090 [2023-11-24 23:23:10,345 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 128 states, 128 states have (on average 1.5234375) internal successors, (195), 127 states have internal predecessors, (195), 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 23:23:13,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:13,763 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2023-11-24 23:23:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-24 23:23:13,764 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.5234375) internal successors, (195), 127 states have internal predecessors, (195), 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 100 [2023-11-24 23:23:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:13,767 INFO L225 Difference]: With dead ends: 225 [2023-11-24 23:23:13,767 INFO L226 Difference]: Without dead ends: 208 [2023-11-24 23:23:13,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 197 SyntacticMatches, 32 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14939 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=10196, Invalid=28416, Unknown=0, NotChecked=0, Total=38612 [2023-11-24 23:23:13,776 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 378 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:13,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 151 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:23:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-24 23:23:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-11-24 23:23:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 1.0341463414634147) internal successors, (212), 207 states have internal predecessors, (212), 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 23:23:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2023-11-24 23:23:13,798 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 100 [2023-11-24 23:23:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:13,799 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2023-11-24 23:23:13,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.5234375) internal successors, (195), 127 states have internal predecessors, (195), 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 23:23:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2023-11-24 23:23:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-24 23:23:13,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:13,803 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:13,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:14,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97c74725-bed1-44bf-8a1a-4a52062ea9e4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:14,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:23:14,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash -12350003, now seen corresponding path program 6 times [2023-11-24 23:23:14,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:14,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126065003] [2023-11-24 23:23:14,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:14,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat