./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.14-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.14-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3bd2edbf3e593c12fc0be33924c944159e0cb6d32e04e77d638ccd9d0e66fc4a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:28,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:28,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:44:28,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:28,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:28,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:28,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:28,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:28,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:28,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:28,950 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:28,951 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:28,951 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:28,952 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:44:28,952 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:28,953 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:28,954 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:44:28,954 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:44:28,955 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:28,956 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:44:28,957 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:44:28,957 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:44:28,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:28,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:28,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:44:28,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:28,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:28,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:28,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:28,962 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:44:28,963 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:44:28,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:28,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:28,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:28,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:28,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:28,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:28,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:28,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:28,967 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:44:28,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:44:28,968 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:28,969 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:28,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:28,969 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_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bd2edbf3e593c12fc0be33924c944159e0cb6d32e04e77d638ccd9d0e66fc4a [2023-11-12 00:44:29,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:29,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:29,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:29,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:29,273 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:29,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/termination-memory-alloca/b.14-alloca.i [2023-11-12 00:44:32,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:32,812 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:32,813 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/sv-benchmarks/c/termination-memory-alloca/b.14-alloca.i [2023-11-12 00:44:32,827 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/data/a5d011c97/b5c24c1229e444b18505b4bc015c61a3/FLAG4c9555536 [2023-11-12 00:44:32,843 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/data/a5d011c97/b5c24c1229e444b18505b4bc015c61a3 [2023-11-12 00:44:32,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:32,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:32,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:32,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:32,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:32,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:32" (1/1) ... [2023-11-12 00:44:32,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122014ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:32, skipping insertion in model container [2023-11-12 00:44:32,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:32" (1/1) ... [2023-11-12 00:44:32,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:33,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:33,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:33,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:33,355 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:33,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33 WrapperNode [2023-11-12 00:44:33,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:33,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:33,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:33,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:33,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,403 INFO L138 Inliner]: procedures = 111, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-11-12 00:44:33,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:33,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:33,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:33,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:33,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:33,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:33,436 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:33,436 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:33,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (1/1) ... [2023-11-12 00:44:33,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:33,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:33,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:33,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:44:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:44:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:44:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:44:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:33,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:33,628 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:33,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:33,817 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:33,858 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:33,859 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:44:33,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:33 BoogieIcfgContainer [2023-11-12 00:44:33,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:33,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:33,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:33,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:33,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:32" (1/3) ... [2023-11-12 00:44:33,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:33, skipping insertion in model container [2023-11-12 00:44:33,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:33" (2/3) ... [2023-11-12 00:44:33,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:33, skipping insertion in model container [2023-11-12 00:44:33,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:33" (3/3) ... [2023-11-12 00:44:33,872 INFO L112 eAbstractionObserver]: Analyzing ICFG b.14-alloca.i [2023-11-12 00:44:33,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:33,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 00:44:33,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:33,957 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;@48c1fdc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:33,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 00:44:33,962 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) [2023-11-12 00:44:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:44:33,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:33,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:44:33,971 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)] === [2023-11-12 00:44:33,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:33,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1807366005, now seen corresponding path program 1 times [2023-11-12 00:44:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724286624] [2023-11-12 00:44:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:34,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:34,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:34,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724286624] [2023-11-12 00:44:34,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724286624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:34,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:34,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:44:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975175051] [2023-11-12 00:44:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:34,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:44:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:44:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:44:34,636 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 6 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:34,796 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-11-12 00:44:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:44:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:44:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:34,809 INFO L225 Difference]: With dead ends: 45 [2023-11-12 00:44:34,809 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:44:34,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:44:34,820 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:34,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:44:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2023-11-12 00:44:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-12 00:44:34,866 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2023-11-12 00:44:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:34,867 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-12 00:44:34,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-12 00:44:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:44:34,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:34,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:34,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:44:34,870 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)] === [2023-11-12 00:44:34,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -193771245, now seen corresponding path program 1 times [2023-11-12 00:44:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:34,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943786519] [2023-11-12 00:44:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:34,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:35,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943786519] [2023-11-12 00:44:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943786519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:35,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:35,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:44:35,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686342657] [2023-11-12 00:44:35,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:35,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:44:35,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:35,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:44:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:44:35,344 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:35,466 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-12 00:44:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:44:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:44:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:35,467 INFO L225 Difference]: With dead ends: 24 [2023-11-12 00:44:35,468 INFO L226 Difference]: Without dead ends: 23 [2023-11-12 00:44:35,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:44:35,470 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:35,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 45 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-12 00:44:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-11-12 00:44:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-12 00:44:35,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2023-11-12 00:44:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:35,477 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-12 00:44:35,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-12 00:44:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:44:35,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:35,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:35,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:44:35,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-12 00:44:35,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1711941235, now seen corresponding path program 1 times [2023-11-12 00:44:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:35,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509570061] [2023-11-12 00:44:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:35,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509570061] [2023-11-12 00:44:35,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509570061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:35,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:35,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:44:35,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335817193] [2023-11-12 00:44:35,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:35,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:44:35,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:44:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:44:35,824 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:35,874 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-11-12 00:44:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:44:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:44:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:35,875 INFO L225 Difference]: With dead ends: 21 [2023-11-12 00:44:35,876 INFO L226 Difference]: Without dead ends: 20 [2023-11-12 00:44:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:44:35,878 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:35,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 27 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-12 00:44:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-12 00:44:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-12 00:44:35,884 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2023-11-12 00:44:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-12 00:44:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-12 00:44:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:44:35,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:35,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:35,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:44:35,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-12 00:44:35,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1530570667, now seen corresponding path program 1 times [2023-11-12 00:44:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115388202] [2023-11-12 00:44:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:36,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115388202] [2023-11-12 00:44:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115388202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:36,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:44:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482556473] [2023-11-12 00:44:36,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:36,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:44:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:44:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:44:36,059 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2023-11-12 00:44:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:36,140 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-11-12 00:44:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:44:36,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 [2023-11-12 00:44:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:36,141 INFO L225 Difference]: With dead ends: 25 [2023-11-12 00:44:36,142 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:44:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:44:36,144 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:36,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:44:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-11-12 00:44:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-11-12 00:44:36,150 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2023-11-12 00:44:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:36,151 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-11-12 00:44:36,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2023-11-12 00:44:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-12 00:44:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:44:36,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:36,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:36,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:44:36,153 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)] === [2023-11-12 00:44:36,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -203050353, now seen corresponding path program 1 times [2023-11-12 00:44:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411956396] [2023-11-12 00:44:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:36,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411956396] [2023-11-12 00:44:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411956396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:44:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906771938] [2023-11-12 00:44:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:44:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:44:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:44:36,666 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:36,871 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-11-12 00:44:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:44:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:44:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:36,872 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:44:36,873 INFO L226 Difference]: Without dead ends: 34 [2023-11-12 00:44:36,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:44:36,874 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:36,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-12 00:44:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-11-12 00:44:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 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) [2023-11-12 00:44:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-11-12 00:44:36,882 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 10 [2023-11-12 00:44:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-11-12 00:44:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-11-12 00:44:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:44:36,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:36,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:36,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:44:36,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-12 00:44:36,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1304195904, now seen corresponding path program 1 times [2023-11-12 00:44:36,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751355356] [2023-11-12 00:44:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:36,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:37,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:37,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751355356] [2023-11-12 00:44:37,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751355356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:37,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629033607] [2023-11-12 00:44:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:37,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:37,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:44:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:37,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-12 00:44:37,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:37,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 45 [2023-11-12 00:44:37,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 1 [2023-11-12 00:44:37,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2023-11-12 00:44:37,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 1 [2023-11-12 00:44:38,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 45 [2023-11-12 00:44:38,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 00:44:38,051 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2023-11-12 00:44:38,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 00:44:38,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 45 [2023-11-12 00:44:38,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 1 [2023-11-12 00:44:38,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2023-11-12 00:44:38,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 1 [2023-11-12 00:44:39,705 INFO L322 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-12 00:44:39,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1096 treesize of output 999 [2023-11-12 00:44:39,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-12 00:44:39,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-12 00:44:39,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:44:39,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:44:40,017 INFO L322 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2023-11-12 00:44:40,018 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 60 [2023-11-12 00:44:40,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-12 00:44:40,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-12 00:44:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:40,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629033607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1787415152] [2023-11-12 00:44:40,875 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-12 00:44:40,875 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:40,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:44:40,885 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:44:40,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:44:45,876 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:45:03,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '501#(and (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 2 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet15#1|)) (= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) 0)) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 2 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 2 |ULTIMATE.start_test_fun_~c~0#1.base|) (exists ((|v_ULTIMATE.start_test_fun_#t~mem9#1_20| Int)) (and (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) |v_ULTIMATE.start_test_fun_#t~mem9#1_20|) (exists ((|v_#memory_int_37| (Array Int (Array Int Int))) (|v_#memory_int_38| (Array Int (Array Int Int)))) (and (<= 0 (+ 2147483649 (select (select (store |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0 (+ (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) (- 1)))) |ULTIMATE.start_test_fun_~c~0#1.base|) 0))) (<= 0 (+ (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) 0) 2147483648)) (<= (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) 2147483648) (<= (select (select (store |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0 (+ (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) (- 1)))) |ULTIMATE.start_test_fun_~c~0#1.base|) 0) 2147483646) (= |#memory_int| (store (store |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0 (+ (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) (- 1)))) |ULTIMATE.start_test_fun_~c~0#1.base| (store (select (store |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0 (+ (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) (- 1)))) |ULTIMATE.start_test_fun_~c~0#1.base|) 0 (+ (select (select (store |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0 (+ (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) 0) (- 1)))) |ULTIMATE.start_test_fun_~c~0#1.base|) 0) 1)))) (= (store |v_#memory_int_37| |ULTIMATE.start_test_fun_~x_ref~0#1.base| (store (select |v_#memory_int_37| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) 0 (select (select |v_#memory_int_38| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) 0))) |v_#memory_int_38|))) (<= 1 |v_ULTIMATE.start_test_fun_#t~mem9#1_20|))) (<= 2 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= 2 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= 2 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= (+ |ULTIMATE.start_test_fun_#t~mem10#1| 2147483648) 0) (<= |ULTIMATE.start_main_#t~nondet15#1| 2147483647))' at error location [2023-11-12 00:45:03,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:45:03,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:45:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2023-11-12 00:45:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404806143] [2023-11-12 00:45:03,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:45:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-12 00:45:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-12 00:45:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1298, Unknown=32, NotChecked=0, Total=1482 [2023-11-12 00:45:03,290 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 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) [2023-11-12 00:45:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:06,204 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2023-11-12 00:45:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 00:45:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 00:45:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:06,212 INFO L225 Difference]: With dead ends: 69 [2023-11-12 00:45:06,212 INFO L226 Difference]: Without dead ends: 38 [2023-11-12 00:45:06,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=401, Invalid=2419, Unknown=42, NotChecked=0, Total=2862 [2023-11-12 00:45:06,215 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 132 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:06,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 44 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:45:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-12 00:45:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2023-11-12 00:45:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:45:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-11-12 00:45:06,230 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 14 [2023-11-12 00:45:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:06,231 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-12 00:45:06,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 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) [2023-11-12 00:45:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-11-12 00:45:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:45:06,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:06,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:45:06,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:06,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-12 00:45:06,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1775367422, now seen corresponding path program 1 times [2023-11-12 00:45:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755496131] [2023-11-12 00:45:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:45:07,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755496131] [2023-11-12 00:45:07,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755496131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:45:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141404176] [2023-11-12 00:45:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:07,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:07,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:07,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:45:07,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb43935e-33ea-4a19-b2c9-21c6a39d4b14/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:45:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:07,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-12 00:45:07,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:07,515 INFO L322 Elim1Store]: treesize reduction 137, result has 32.5 percent of original size [2023-11-12 00:45:07,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 100 treesize of output 180 [2023-11-12 00:45:07,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 00:45:07,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:45:07,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:45:08,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-11-12 00:45:09,766 INFO L322 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2023-11-12 00:45:09,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 745 treesize of output 713 [2023-11-12 00:45:11,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-12 00:45:11,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-12 00:45:11,341 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-11-12 00:45:16,980 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse21 (select |c_#memory_int| |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_test_fun_~x_ref~0#1.base|))) (let ((.cse1 (select .cse12 0)) (.cse0 (select .cse21 0))) (and (= |c_ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (= .cse0 .cse1) (<= 1 .cse1) (not (= |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| |c_ULTIMATE.start_test_fun_~c~0#1.base|)) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_test_fun_~c~0#1.base|)) (.cse19 (= |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| |c_ULTIMATE.start_test_fun_~x_ref~0#1.base|))) (or (and (or (exists ((v_prenex_94 (Array Int Int)) (v_prenex_93 (Array Int Int)) (v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_21 (Array Int Int)) (v_prenex_95 (Array Int Int)) (v_prenex_92 Int)) (let ((.cse5 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_prenex_93) |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_94) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_95) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (let ((.cse2 (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_94) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_95) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| (store .cse5 0 v_prenex_92)) |c_ULTIMATE.start_test_fun_~c~0#1.base|) 0 0))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_DerPreprocessor_21) |c_ULTIMATE.start_test_fun_~c~0#1.base| .cse2))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (let ((.cse6 (select .cse4 0))) (and (= .cse2 .cse3) (= .cse4 (store .cse5 0 .cse6)) (= v_prenex_93 .cse5) (= .cse6 .cse0) (= v_DerPreprocessor_20 (select .cse7 |c_ULTIMATE.start_test_fun_~x_ref~0#1.base|))))))))) (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_21 (Array Int Int)) (|ULTIMATE.start_test_fun_~y#1| Int) (v_DerPreprocessor_16 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_test_fun_~c~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (let ((.cse13 (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~c~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| (store .cse11 0 |ULTIMATE.start_test_fun_~y#1|)) |c_ULTIMATE.start_test_fun_~c~0#1.base|) 0 0))) (let ((.cse9 (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_DerPreprocessor_21) |c_ULTIMATE.start_test_fun_~c~0#1.base| .cse13))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_test_fun_~x_ref~0#1.base|))) (and (let ((.cse8 (select .cse9 |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (= .cse8 (store v_DerPreprocessor_18 0 (select .cse8 0)))) (= v_DerPreprocessor_20 .cse10) (= v_DerPreprocessor_16 .cse11) (= .cse12 .cse10) (= .cse3 .cse13))))))) (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_21 (Array Int Int)) (v_prenex_100 Int) (v_prenex_101 (Array Int Int)) (v_prenex_102 (Array Int Int)) (v_prenex_103 (Array Int Int))) (let ((.cse14 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_prenex_101) |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_102) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_103) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (let ((.cse18 (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_102) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_103) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| (store .cse14 0 v_prenex_100)) |c_ULTIMATE.start_test_fun_~c~0#1.base|) 0 0))) (let ((.cse15 (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_DerPreprocessor_21) |c_ULTIMATE.start_test_fun_~c~0#1.base| .cse18))) (let ((.cse17 (select .cse15 |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (let ((.cse16 (select .cse17 0))) (and (= v_prenex_101 .cse14) (= v_DerPreprocessor_20 (select .cse15 |c_ULTIMATE.start_test_fun_~x_ref~0#1.base|)) (= (store v_prenex_103 0 .cse16) .cse17) (= .cse16 .cse0) (= .cse3 .cse18))))))))) .cse19) (and (or (exists ((v_prenex_112 Int) (v_prenex_113 (Array Int Int)) (v_prenex_114 (Array Int Int)) (v_prenex_115 (Array Int Int))) (let ((.cse20 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_prenex_113) |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_114) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_115) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (and (= (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_114) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_115) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| (store .cse20 0 v_prenex_112)) |c_ULTIMATE.start_test_fun_~c~0#1.base|) 0 0) .cse3) (= .cse21 (store .cse20 0 .cse0))))) (exists ((v_prenex_124 Int) (v_prenex_125 (Array Int Int)) (v_prenex_126 (Array Int Int)) (v_prenex_127 (Array Int Int))) (let ((.cse22 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| v_prenex_125) |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_126) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_127) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base|))) (and (= v_prenex_127 (store .cse22 0 (select v_prenex_127 0))) (= (store .cse22 0 .cse0) .cse21) (= (store (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_test_fun_~c~0#1.base| v_prenex_126) |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| v_prenex_127) |c_ULTIMATE.start_test_fun_~y_ref~0#1.base| (store .cse22 0 v_prenex_124)) |c_ULTIMATE.start_test_fun_~c~0#1.base|) 0 0) .cse3))))) (not .cse19) (not (= |c_ULTIMATE.start_test_fun_~x_ref~0#1.base| |c_ULTIMATE.start_test_fun_~c~0#1.base|))))) (= |c_ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0)))) is different from true [2023-11-12 00:45:19,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:45:19,968 INFO L322 Elim1Store]: treesize reduction 46, result has 33.3 percent of original size [2023-11-12 00:45:19,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1099 treesize of output 1044 [2023-11-12 00:45:20,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 280 treesize of output 283 [2023-11-12 00:45:20,061 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 280 [2023-11-12 00:45:20,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 277 [2023-11-12 00:45:20,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 274 [2023-11-12 00:45:20,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 281 [2023-11-12 00:45:20,218 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 261 [2023-11-12 00:45:20,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 258 [2023-11-12 00:45:20,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:45:20,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 50 [2023-11-12 00:45:20,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2023-11-12 00:45:20,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-12 00:45:20,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 89 [2023-11-12 00:45:20,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2023-11-12 00:45:20,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:45:20,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 50 [2023-11-12 00:45:20,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2023-11-12 00:45:20,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-12 00:45:20,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-12 00:45:20,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-12 00:45:20,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 00:45:21,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-12 00:45:21,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-12 00:45:21,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-12 00:45:21,785 INFO L322 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2023-11-12 00:45:21,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 63 [2023-11-12 00:45:22,166 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 00:45:22,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 46 [2023-11-12 00:45:26,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-12 00:45:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-12 00:45:26,938 INFO L327 TraceCheckSpWp]: Computing backward predicates...